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Data Management Plan

IceBridge Data Management Plan (pdf)

Check the ESDIS Doc Server at https://ops1-cm.ems.eosdis.nasa.gov/cm2 to verify that this is the correct version prior to use.


Earth Science Data and Information System Project, Code 423

August 2018
Expires: End of project, 2020

Reviewed by:
Jeanne Behnke
ESDIS Deputy – Operations
GSFC – Code 423

Steve Tanner
NSIDC DAAC Operation IceBridge
Manager
National Snow and Ice Data Center

Approved by:
Andy Mitchell
ESDIE Project Manager
GSFC – Code 423

Joseph Macgregor
Operation IceBridge Project Scientist
GSFC – Code 615

Amanda Leon
NSIDC DAAC Manager
National Snow and Ice Data Center

 

Preface


This document is under ESDIS Project configuration control. Once this document is approved, ESDIS approved changes are handled in accordance with Class I and Class II change control requirements described in the ESDIS Configuration Management Procedures, and changes to this document shall be made by document change notice (DCN) or by complete revision.

This document contains information pertaining to the Operation IceBridge Data Management Plan.

Any questions should be addressed to:
ESDIS Configuration Management Office
NASA/GSFC
Code 423
Greenbelt, Md. 20771

Abstract


This document is a detailed plan for all management of Operation IceBridge data throughout its project lifecycle ending in 2020. Its content is applicable to all data providers and all data sets unless specific exceptions are made.

Keywords:  IceBridge, NSIDC DAAC, CReSIS, LIDAR, WFF, GSFC, NSERC, CIRRUS, UARC, DMS, Lamont-Doherty, WISE

Table of Contents


1   INTRODUCTION

1.1    SCOPE

1.2    MISSION DESCRIPTION

2       REQUIREMENTS

2.1    SCIENCE DATA GENERATION AND DOCUMENTATION

2.2    SCIENCE DATA FORMAT AND METADATA

3       PROVIDERS, PRODUCTS, AND DEADLINES

3.1    UNIVERSITY OF KANSAS CENTER FOR REMOTE SENSING OF ICE SHEETS (CRESIS)

3.1.1      Instruments and Science Data Products

3.1.1.1     Accumulation Radar

3.1.1.2     Ku-Band Radar Altimeter

3.1.1.3     Multichannel Coherent Radar Depth Sounder (MCoRDS)

3.1.1.4    Snow Radar

3.2    NASA WALLOPS FLIGHT FACILITY

3.2.1      Instruments and Science Data Products

3.2.1.1     Airborne Topographic Mapper (ATM)

3.2.1.2     Narrow Swath Airborne Topographic Mapper (ATM)

3.2.1.3     Continuous Airborne Mapping By Optical Translator (CAMBOT)

3.2.1.4     KT19 Infrared Radiation Pyrometer

3.3    NASA GODDARD SPACE FLIGHT CENTER

3.3.1      Instruments and Science Data Products

3.3.1.1     Land, Vegetation, and Ice Sensor (LVIS)

3.4    NATIONAL SUBORBITAL EDUCATION AND RESEARCH CENTER (NSERC)

3.4.1      Instruments and Science Data Products

3.4.1.1     On-board Meteorology Suite

3.5    CIRRUS DIGITAL SYSTEMS

3.5.1      Instruments and Science Data Products

3.5.1.1     Cirrus CIR Camera

3.6    UNIVERSITY AFFILIATED RESEARCH CENTER (UARC)

3.6.1      Instruments and Science Data Products

3.6.1.1     Digital Mapping System Camera (DMS)

3.7    LAMONT-DOHERTY EARTH OBSERVATORY

3.7.1      Instruments and Science Data Products

3.7.1.1     Magnetometer

3.7.1.2     Gravimeter

3.8    UNIVERSITY OF TEXAS

3.8.1      Instruments and Science Data Products

3.8.1.1     GPS / Inertial Measurements

3.8.1.2     Gravimeter

3.8.1.3     High Capability Radar Sounder (HiCARS)

3.8.1.4     Laser Altimeter

3.8.1.5     Scanning Lidar

3.8.1.6     Magnetometer

3.8.1.7     Pressure Altimeter

3.9    UNIVERSITY OF ALASKA FAIRBANKS

3.9.1      Instruments and Science Data Products

3.9.1.1     Glacier Lidar

3.10       UNIVERSITY OF CALIFORNIA IRVINE

3.10.1         Instruments and Science Data Products

3.10.1.1        WISE

3.11       UNIVERSITY OF COLORADO/CULPIS-X

3.11.1         Instruments and Science Data Products

3.12       MISCELLANEOUS

3.12.1         Data Products

3.12.1.1        Flight Reports

3.12.1.2        Derived Products

4       DATA STEWARDSHIP

4.1    ACCEPTANCE OF NEW DATA SETS

4.2    DATA SUBMISSION PROCESS

4.3    NAMING CONVENTIONS

5       ABBREVIATIONS AND ACRONYMS
 

1. Introduction


1.1  Scope

This document outlines a detailed plan for all aspects of Operation IceBridge data management throughout its project lifecycle until 2020. Its content is applicable to all data providers and all data sets unless specific exceptions are made.
 

1.2  Mission Description

The Operation IceBridge mission, initiated in 2009, collects airborne remote sensing measurements to bridge the gap between NASA’s Ice, Cloud and Land Elevation Satellite (ICESat) mission and the upcoming ICESat-2 mission. Operation IceBridge survey areas include the Greenland and Antarctic ice sheets, Canadian ice caps, Alaskan glaciers, and sea ice in the Arctic and Southern oceans.

Operation IceBridge combines multiple instruments to map ice surface topography, bedrock topography beneath the ice sheets, grounding line position, ice and snow thickness, and sea ice distribution and freeboard. Data from laser altimeters and radar sounders are paired with gravimeter, magnetometer, mapping camera, and other data to provide dynamic, high-value, repeat measurements of rapidly changing portions of land and sea ice.
 

2. Requirements


2.1  Science Data Generation and Documentation

2.1.1    All Operation IceBridge data products shall conform to the terms and conditions of the NASA Earth Science Data and Information Policy, which can be found at: http://science.nasa.gov/earth-science/earth-science-data/data-information-policy/.
2.1.2    Operation IceBridge data providers shall be assigned the responsibility of producing data products for their respective instruments.
2.1.3    To keep end-to-end consistency, Operation IceBridge data providers shall reprocess any given data product (in its entirety, including data from earlier IceBridge campaigns) that requires an algorithm change.
2.1.4    To keep end-to-end consistency, Operation IceBridge data providers shall reformat any given data product (in its entirety, including data from earlier campaigns) that requires a format change.
2.1.5    By the end of mission, Operation IceBridge data providers shall provide all documentation necessary for final archival purposes as spelled out in the NASA Earth Science preservation document at: https://earthdata.nasa.gov/user-resources/standards-and-references/preservation-content-spec
2.1.6    Operation IceBridge data providers shall provide documentation, as specified by NASA/NSIDC documentation content requirements to facilitate users’ understanding and use of their data products. NSIDC User Services will provide template documentation upon request and will work with data providers to develop appropriate documentation.
2.1.7    Operation IceBridge data providers shall submit product documentation to the NSIDC DAAC as early as possible before the first delivery of a new product, and be available to work with NSIDC technical writers, to facilitate establishment of the new product. For subsequent data deliveries, data providers shall submit updates to documentation within one week after the submission of data to the NSIDC DAAC for ingest, archive and distribution.
2.1.8    Operation IceBridge L1B and L2 data products shall be organized and partitioned temporally, following each flight’s trajectory.
 

2.2 Science Data Format and Metadata

2.2.1    Operation IceBridge data product formats, with the exception of Level 0 or raw data, shall conform to one of the NASA Earth Science Division (ESD) approved Data System standards. The formats will be selected in collaboration with the ESDIS Project and documented in Section 4 of this Data Management Plan. The list of existing approved standards,  along  with  guidelines for  approval  of  new  standards,  can  be  found  at: https://earthdata.nasa.gov/user-resources/standards-and-references. Once decided upon and agreed to, a data set’s format should be kept consistent for all future deliveries, unless renegotiated with a plan for reprocessing of existing data.
2.2.1    All data submissions to the NSIDC DAAC shall have accompanying spatial, temporal, and product metadata that adhere to ESD-approved specifications at: https://earthdata.nasa.gov/user-resources/standards-and-references.
 

3. Providers, Products, and Deadlines


This section describes each of the individual data providers, their instruments, the data products that they  generate, and their associated submission deadlines. For each data product, the following information is provided.

  • Product collection short name
  • A brief product description
  • Data processing level
  • Data format
  • Estimated data volume per campaign (GB)
  • Submission schedule
  • Provider contact information
  • Delivery mechanism

 

3.1 NASA Wallops Flight Facility

NASA Goddard Space Flight Center’s Wallops Flight Facility, located on Virginia’s Eastern Shore, was established in 1945 by the National Advisory Committee for Aeronautics, as a center for aeronautic research. The research and responsibilities of Wallops Flight Facility are centered on the philosophy of providing a fast, low cost, highly flexible and safe response to meet the needs of the United States’ aerospace technology interests and science research.

Provider POCs Email Address
Michael Studinger Michael.Studinger@nasa.gov
Jim Yungel James.K.Yungel@nasa.gov

 

3.1.1    Instruments and Science Data Products

3.1.1.1    Airborne Topographic Mapper (ATM)
The ATM is a scanning Laser Imaging Detection and Ranging (LIDAR) developed and used by NASA for observing the Earth’s topography for several scientific applications, foremost of which is the measurement of changing Arctic and Antarctic ice sheets and glaciers. It typically flies on aircraft at an altitude between 400 and 800 meters above ground level, and measures topography to an accuracy better than ten centimeters by incorporating measurements from global positioning system (GPS) receivers and inertial navigation system (INS) attitude sensors.

Table 3.5.  ATM Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
ILATM0 IceBridge ATM L0 Raw Ranges 0 Binary 175 6 months FTP or equivalent
ILATM1B IceBridge ATM L1B Qfit Elevation and Return Strength 1B HDF5 500 6 months following deployment end FTP or equivalent
ILATMW1B IceBridge ATM L1B Elevation and Return Strength with Waveforms 1B HDF5 75 6 months following deployment end FTP or equivalent
ILATM2 IceBridge ATM L2 Icessn Elevation, Slope, and Roughness 2 Fixed format ASCII 2 6 months following deployment end FTP or equivalent
IDHDT4 IceBridge ATM L4 dh/dt 4 Fixed format ASCII 0.2 6 months following deployment end FTP or equivalent

 

3.1.1.2    Narrow Swath Airborne Topographic Mapper
The NASA IceBridge Narrow Swath ATM Level-1B Qfit Elevation and Return Strength (ILNSA1B) data set contains spot elevation measurements of Greenland, Arctic, and Antarctic sea ice acquired using the NASA ATM 4CT3 narrow scan instrumentation

Table 3.6.  Narrow Swath ATM Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
ILNSA1B IceBridge Narrow Swath ATM L1B Qfit Elevation and Return Strength 1B HDF5 30 6 months following deployment end FTP or equivalent

 

3.1.1.3    Continuous Airborne Mapping By Optical Translator (CAMBOT)
The NASA IceBridge CAMBOT L1B Geolocated Images data set contains images taken over Antarctica and Greenland. The data set contains original CAMBOT files and full size Joint Pictures Expert Group (JPEG) images, with associated Keyhole Markup Language (KML) files, rotated and reduced-resolution Portable Network Graphics (PNG) image files, and position, altitude and trajectory files.

Table 3.7.  CAMBOT Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IOCAM1B IceBridge CAMBOT L1B Geolocated Images 1B jpeg 500 6 months following deployment end Hard drive

 

3.1.1.4    KT-19 Infrared Radiation Pyrometer
The NASA IceBridge KT-19 IR Surface Temperature data set contains surface temperature measurements of Arctic sea ice and land ice acquired using the Heitronics KT19.85 Series II Infrared Radiation Pyrometer alongside the NASA ATM instrument.

Table 3.8.  KT19 Infrared Radiation Pyrometer Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IAKST1B IceBridge KT19 IR Surface Temperature 1B Fixed format ASCII 0.5 6 months following deployment end FTP to NSIDC

 

3.1.1.5    Pathfinder Advanced Radar Ice Sounder (PARIS)
The IceBridge PARIS data set contains Greenland ice thickness measurements acquired using the Pathfinder Advanced Radar Ice Sounder (PARIS). The transmit waveform of this radar sounder is a 5 MHz bandwidth chirp generated by a commercial Direct-Digital Synthesizer (DDS) chip. The chip also applies a trapezoidal envelope to the pulse, minimizing unwanted sidebands. The 250 W amplifier uses a class AB mode of operation to ensure high linearity and thus preserve the pulse’s low sidebands. Bench tests of the amplifier demonstrated a two-tone third-order inter-modulation of better than -20 dBc measured at PO = 250 W

Table 3.9.  PARIS Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IAKST1B IceBridge KT19 IR Surface Temperature 1B Fixed format ASCII 0.5 6 months following deployment end FTP to NSIDC

 

3.2 University of Kansas Center for Remote Sensing of Ice Sheets (CReSIS)

The Center for Remote Sensing of Ice Sheets (CReSIS) is a Science and Technology Center established by the National Science Foundation (NSF)in 2005, with the mission of developing new technologies and computer models to measure and predict the response of sea level change to the mass balance of ice sheets  in  Greenland  and  Antarctica. The NSF’s Science and Technology Center (STC) program combines the efforts of scientists and engineers to respond to problems of global significance, supporting the intense, sustained, collaborative work that is required to achieve progress in these areas. NSF STC support ended in 2015, but CReSIS continues to operate with other external awards and university support.

Provider POCs Email Address
Carl Leuschen leuschen@cresis.ku.edu
John Paden paden@ku.edu

 

3.2.1    Instruments and Science Data Products

3.2.1.3    Multichannel Coherent Radar Depth Sounder (MCoRDS)
This radar typically operates over the frequency range from 180 to 210 MHz on the NASA P-3 and 165 to 215 MHz on the NASA DC-8 with multiple receivers developed for airborne sounding and imaging of ice sheets. Multiple receivers permit digital beam-steering for suppressing cross-track surface clutter that can mask weak ice–bed echoes and strip-map synthetic aperture radar (SAR) images of the ice-bed interface. With 1225 W of peak transmit power on the P-3 and a peak transmit power of 6000 W on the DC-8, a loop sensitivity of >230 dB is achieved.

Table 3.3.  MCoRDS Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IRMCR1B IceBridge MCoRDS L1B Geolocated Radar Echo Strength Profiles 1B NetCDF 100 6 months FTP
IRMCR2 IceBridge MCoRDS L2 IceThickness 2 CSV 1 6 months FTP
IRMCR3 IceBridge MCoRDS L3Gridded IceThickness, Surface, and Bottom 3 ASCII 1 6 months FTP

* IRMCR3 volume per campaign is dependent on availability of flight grids and community need for gridded products.
 

3.2.1.2    Snow Radar
This ultra-wideband radar operates over the frequency from 2 to 8 GHz to map near-surface internal layers in polar firn with fine vertical resolution. Starting in 2017 the Snow Radar was replaced with a single system which operates from 2-18 GHz, sub-band processing of the data will be done to provide simulated data from the historic 2-8 GHz system. The radar also measures the thickness of snow over sea ice. Information about snow thickness is essential to estimate sea ice thickness from ice freeboard measurements performed with satellite radar and laser altimeters.

Table 3.4.  Snow Radar Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IRSNO1B IceBridge Snow Radar L1B Geolocated Radar Echo Strength Profiles 1B NetCDF 250 6 months FTP

 

3.2.1.3    Accumulation Radar
This radar provides fine depth resolution profiling of the top 100 m of the ice column. It is designed to map variations in the snow accumulation rate. When operated from aircraft, it operates from 600 to 900 MHz providing 28-cm depth resolution in ice.

Table 3.1.  Accumulation Radar Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IRACC1B IceBridge Accumulation Radar L1B Geolocated Radar Echo Strength Profiles 1B NetCDF 150 6 months FTP, SFTP or SCP

 

3.2.1.4    Ku-Band Radar Altimeter
This wideband radar altimeter operates over the frequency range from 12 to 18 GHz. The primary purpose of this radar is high precision surface elevation measurements over polar ice sheets. The data collected with this radar can be analyzed in conjunction with laser-altimeter data to determine thickness of snow over sea ice. Starting in 2017, the Ku Radar was replaced with a single system which operates from 2-18 GHz (3.2.1.2), sub-band processing of the data will be done to provide simulated data from the historic 12-18 GHz system.

Table 3.2.  Ku-Band Radar Altimeter Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IRKUB1B IceBridge Ku-Band Radar L1B Geolocated Radar Echo Strength Profiles 1B NetCDF 250 6 months FTP

 

3.3 NASA Goddard Space Flight Center

NASA’s Land, Vegetation and Ice Sensor (LVIS), which also includes data from an integrated inertial navigation system (INS) and GPS, is designed, developed and operated by the Laser Remote Sensing Laboratory, at NASA’s Goddard Space Flight Center.

Provider POCs Email Address
Bryan Blair James.B.Blair@nasa.gov
Michelle Hofton mhofton@umd.edu
Emily Wilson emily.l.wilson@nasa.gov
Shar Etemad shahriar.etemad@nasa.gov

 

3.3.1    Instruments and Science Data Products

3.3.1.1    Land, Vegetationand Ice Sensor
LVIS is a scanning laser altimeter instrument that is flown, by aircraft, over target areas to collect data on surface topography, surface roughness, and vegetation coverage. LVIS has a scan angle of 12º, which produces a 2-km wide swath from a 10-km flight altitude. LVIS is a full-waveform laser altimeter, and, as such, the transmit and return waveforms are collected for each laser shot and released as the LVIS L1B product.

Table 3.9.  LVIS Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
ILVIS0 IceBridge LVIS L0 Raw Ranges 0 Binary 500 1 month following deployment end Hard drive
ILVGH1B IceBridge LVIS GH L1B Geolocated Return Energy Waveforms 1B HDF5 300 6 months following deployment end FTP
ILVGH2 IceBridge LVIS GH L2Geolocated Surface Elevation Product 2 Fixed format ASCII 30 6 months following deployment end FTP
ILVIS1B IceBridge LVIS L1B Geolocated Return Energy Waveforms 1B HDF5 300 6 months following deployment end FTP
ILVIS2 IceBridge LVIS L2Geolocated SurfaceElevation Product 2 Fixed format ASCII 30 6 months following deployment end FTP
IPPLV1B IceBridge LVIS POS/AV L1B Corrected Position and Attitude Data 1B sbet 20 6 months following deployment end FTP

 

3.4 National Suborbital Education and Research Center (NSERC)

The NSERC is the product of a cooperative agreement between NASA and the University of North Dakota. NSERC supports science mission operations and aircraft deployments for Earth science research campaigns conducted by the NASA Airborne Science Program. NSERC provides payload integration engineering, data display and networking, and facility instrumentation for NASA’s fleet of research aircraft, including the DC-8 and P-3B airborne laboratories, the WB-57 high altitude platform, and the Global Hawk Uninhabited Aerial Vehicle, among others.
 
NSERC is also responsible for education and outreach activities for the Airborne Science Program, including organization and operation of the Student Airborne Research Program (SARP), a college-level summer internship that provides hands-on research experience in airborne science using NASA’s flying laboratories.

Provider POCs Email Address
David van Gilst d.vangilst@nserc.und.edu

 

3.4.1    Instruments and Science Data Products

3.4.1.1    On-board Meteorology Suite
This is a collection of airborne in-flight meteorological and in-cabin measurements, and thermal emission measurements of near-nadir surface skin temperature. Instruments flown over Antarctica include cabin pressure transducer, 3-stage hygrometer, 2-stage hygrometer, total air temperature sensor, and infrared surface temperature pyrometer. The data files contain measurements for 36 meteorological, surface characteristic, and positional variables.

Table 3.10.  On-board Meteorology Suite Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IAMET1B IceBridge NSERC L1B Geolocated Meteorologic and Surface Temperature Data 1B ICARTT <1 1 month after deployment FTP

 

3.5 The Airborne Sensor Facility (ASF)

The Airborne Sensor Facility at NASA Ames and Armstrong Research Centers provides data system development and operations, and payload integration services for the Airborne Science Program. It is also responsible for the development and operation of remote sensing instruments for the NASA Earth Observing System Project Science Office, that are used for satellite calibration and validation, process studies, and algorithm development. This includes field operations, data processing, and the operation of a NIST-traceable calibration laboratory

Provider POCs Email Address
Rose Dominguez roseanne.dominguez@nasa.gov
Jeffrey Myers jeffrey.s.myers@nasa.gov

 

3.5.1    Instruments and Science Data Products

3.5.1.1   Digital Mapping System Camera
The DMS is an airborne digital camera that acquires high resolution natural color and panchromatic imagery from low and medium altitude research aircraft. Data acquired by DMS are used by a variety of scientific programs to monitor variation in environmental conditions, assess global change, and respond to natural disasters.
 
The DMS instrument is maintained and operated by the Airborne Sensor Facility (ASF) located at the NASA Ames Research Center in Mountain View, California, under the oversight of the Earth Observing System (EOS) Project Science Office at NASA Goddard.

Table 3.12.  Digital Mapping System Camera

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IODCC0 IceBridge DMS L0 Camera Calibration 0 PDF 1 90 days Hard Drive
IODMS0 IceBridge DMS L0 Raw Imagery 0 jpg 5120 90 days Hard Drive
IODMS1B IceBridge DMS L1B Geolocated and Orthorectified Images 1B geotiff 9216 90 days Hard Drive
IPAPP1B IceBridge POS/AV L1B Corrected Position and Attitude Data 1B sbet 35 90 days FTP

 

3.6 Cirrus Digital Systems (UARC)

Cirrus Digital Systems is a California based company that processes Digital Mapping System (DMS) stereographic imagery and ATM Lidar into a Level 3 Hybrid Surface Model (HSM). The HSM possesses the elevation accuracy of ATM and visual realism and surface resolution of DMS imagery.

Provider POCs Email Address
John Arvesen arvesen@cirrus-designs.com
Ryan Dotson rdotson@fireballit.com

 

3.6.1    Instruments and Science Data Products

3.6.1.1   Cirrus HSM

Table 3.11.  Cirrus HSM

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IODMS0 IceBridge DMS L3 Photogrammetric DEM 3 Geotiff ~2000 6 months (requires L1B ATM data) Hard drive or BD-ROM

 

3.7 Lamont-Doherty Earth Observatory

Lamont-Doherty Earth Observatory seeks fundamental knowledge about the origin, evolution and future of the natural world. Its scientists study the planet from its deepest interior to the outer reaches of its atmosphere, on every continent and in every ocean, providing a rational basis for the difficult choices facing humanity.

Provider POCs Email Address
Kirsty Tinto tinto@ldeo.columbia.edu

 

3.7.1    Instruments and Science Data Products

3.7.1.1    Magnetometer
The NASA IceBridge Scintrex CS-3 Cesium Magnetometer records magnetic field readings and fluxgate values.

Table 3.13.  Magnetometer

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IMCS30 IceBridge Scintrex CS-3 Cesium Magnetometer L0 Raw Magnetic Field 0 ASCII 20 5 Months after campaign FTP
IMCS31B IceBridge Scintrex CS-3 Cesium Magnetometer L1B Geolocated Magnetic Anomalies 2 ICARTT 4 5 Months after campaign FTP

 

3.7.1.2    Gravimeter
This gravimeter is a Sander Geophysics AIRGrav airborne gravity system. The AIRGrav data consist of measurements of aircraft attitude and acceleration. Aircraft attitude is provided as one file per flight. Gravity data include latitude and Eötvös corrected values, and the free air correction at various along-flight-line spatial filtering scales. Gravity data are organized temporally.

Table 3.14.  Gravimeter

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IGGRV1B IceBridge Sander AIRGrav L1B Geolocated Free Air Gravity Anomalies 2 ICARTT 4 5 Months after campaign FTP
IGBTH3 IceBridge Sander AIRGrav L3 Bathymetry 4 ASCII 1 1 year FTP
IGBTH4 IceBridge Sander AIRGrav L4 Bathymetry 4 ASCII 2 1 year FTP

 

3.8 University of Texas

The University of Texas Institute for Geophysics (UTIG) is an academic research center best known for projects with an international scope. Prominent research areas include marine geology and geophysics, tectonics, terrestrial and lunar seismology, quantitative and exploration geophysics, and geophysical studies of ice sheets and of climate.

Provider POCs Email Address
Don Blankenship blank@ig.utexas.edu
Duncan Young duncan@utig.ig.utexas.edu

 

3.8.1    Instruments and Science Data Products

3.8.1.1    GPS / Inertial Measurements
Two GPS-aided Inertial Measurement Units (IMU) are included in this suite. One is standalone and one is integrated with the Scanning Lidar.

Table 3.15.  GPS / IMU

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IPUTG0 IceBridge GPS L0 Raw Satellite Navigation Data 0 ELSA/ NMEA 1 2 months post field; non critical FTP
IPUTI0 IceBridge IMU L0 Raw Inertial Measurement Unit Data 0 ELSA/ MMQ-50/ Novatel 1 2 months post field; non critical FTP
IPUTG1B IceBridge GPS/IMU L1B Primary Position and Attitude Solution 1B ASCII <1 4 months post field FTP
IPUTN1B IceBridge GPS L1B Time-Tagged Real-Time Position and Attitude Solution 1B ASCII <1 2 months post field FTP
ITKTC0 IceBridge L0 Raw Kinematics GPS Time Codes 0 ELSA/ ASCII time stamps <1 2 months post field; non critical FTP

 

3.8.1.2    Gravimeter
Three gravimeters have been used by Texas for Operation IceBridge: a Bell Aerospace BGM-3 (#203); a ZLS Corporation ZLS (#S-83); and a Canadian Microgravity GT-1A (#3).

Table 3.16.  Gravimeter

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IGBGM0 IceBridge BGM-3 Gravimeter L0 Raw Accelerations 0 ELSA/ Counts per second <1 2 months post field; non critical (retired after AN11) FTP
IGBGM1B IceBridge BGM-3 Gravimeter L1B Time-Tagged Accelerations 1B ASCII <1 2 months post field; (retired after AN11) FTP
IGBGM2 IceBridge BGM-3 Gravimeter L2 Geolocated Free-Air Anomalies 2 ASCII <1 4 months post field; (retired after AN11) FTP
IGZLS1B IceBridge ZLS Dynamic Gravity Meter Time-Registered L1B Vertical Accelerations 1B ASCII <1 2 months post field; (only used for AN11) FTP
IGCMG1B IceBridge CMG 1A Dynamic Gravity Meter Time Time-Tagged L1B Vertical Accelerations 1B ASCII <1 2 months post field;<p(only used for<pAN12) FTP
IGCMG2 IceBridge CMG GT-1A Gravimeter L2 Geolocated Free-Air Gravity Disturbances 2 ASCII <1 4 months post field; (only used for AN12) FTP

 

3.8.1.3    High Capability Radar Sounder (HiCARS)
This is a Very High Frequency (VHF) ice-penetrating radar which operates in frequency-chirped mode from 52.5 to 67.5 MHz. HiCARS allows for phase coherent recording of radar returns for advanced processing. For antennas the system uses twin flat dipoles, one mounted under each aircraft wing providing approximately 18 dB of two-way antenna gain. The peak instantaneous output power is 8kW.

Table 3.17.  HiCARS

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IR1HI0 IceBridge HiCARS 1 L0 Raw Return Energy Amplitudes 0 16-bit offset video Binary 1500 2 months post field; non critical (retired after AN10) Hard drive
IR1HIB IceBridge HiCARS 1 L1B Time-Tagged Echo Strength Profiles 1B NetCDF 120 2 months post field; (retired after AN10; format pending NSIDC approval) Hard drive
IR1HI2 IceBridge HiCARS 1 L2 Geolocated Ice Thickness 2 ASCII <1G 4 months post field;<p(retired after AN10) FTP
IR2HI0 IceBridge HiCARS 2 L0 Raw Return Energy Amplitudes 0 16-bit offset video Binary 1500 2 months post field; non critical (used after AN10) Hard drive
IR2HI1B IceBridge HiCARS 2 L1B Time-Tagged Echo Strength Profiles 1B NetCDF 120 2 months post field; (used after AN10; format pending NSIDC approval) Hard drive
IR2HI2 IceBridge HiCARS 2 L2 Geolocated Ice Thickness 2 ASCII <1 4 months post field; (retired after AN10) FTP

 

3.8.1.4    Laser Altimeter
This is a fixed, nadir pointing Riegl laser altimeter, which is the predecessor to the scanning, Sigma Space lidar.

Table 3.18.  Laser Altimeter

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
ILUTP0 IceBridge Riegl Laser Altimeter L0 Raw Ranges 0 ELSA/ Riegl <1 2 months post field; non critical FTP
ILUTP1B IceBridge Riegl Laser Altimeter L1B Time-Tagged Laser Ranges 1B ASCII <1 2 months post field FTP
ILUTP2 IceBridge Riegl Laser Altimeter L2 Geolocated Surface Elevation Triplets 2 ASCII <1 4 months post field FTP

 

3.8.1.5    Scanning Lidar
This is a multi-beam, scanning photon-counting lidar built by Sigma Space. It images the surface below the aircraft with one hundred laser beamlets. This system is mechanically scanned in a swath either side of the flight path. A one hundred channel photon counting receiver captures return photons and records time of flight and time tag data allowing a three-dimensional reconstruction of the surface. At a survey altitude of 800 m, swath width is around 400 m.

Table 3.19.  Scanning Lidar

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
ILSSP0 IceBridge Sigma Space Prototype L0 Raw Time-of-Flight Data 0 Sigma Space binary ~1000 to 3000 2 months post field; non critical (Retired after AN09) Hard drive
ILSIG0 IceBridge Sigma Space Lidar L0 Raw Time-of-Flight Data 0 Sigma Space binary ~1000 to 3000 2 months post field; non critical Hard drive
ILSIG1B IceBridge Photon Counting Lidar L1B Uncorrected Geolocated Photon Elevations 1B HDF(details TBD) 250 4 months Hard drive
ILSNP1B IceBridge Sigma Space Photon Counting Lidar L1B Time-Tagged Nadir Photon Ranges 1B HDF5 (details TBD) ~1000 4 months post field Hard drive
ILSNP4 IceBridge Merged Photon Counting Lidar/Profiler L4 Surface Slope and Elevations 4 HDF <1 4 months post field FTP

 

3.8.1.6    Magnetometer
There are two magnetometers used for these products. One is a cesium vapor magnetometer used for scalar geomagnetic field strength measurements. The other is a three-axis fluxgate magnetometer used to provide vector magnetic field data for use by the cesium magnetometer.

Table 3.20.  Magnetometer

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IMFGM0 IceBridge Flux Gate Magnetometer L0 Raw Magnetic Field 0 ELSA/3 channel voltages (HEX) <1 2 months post field; non critical FTP
IMGEO0 IceBridge Geometrics 823A Cesium Magnetometer L0 Raw Magnetic Field 0 ELSA/ Geometrics <1 2 months post field; non critical FTP
IMGEO1B IceBridge Geometrics 823A Cesium Magnetometer L1B Time-Tagged Magnetic Field 1B ASCII <1 2 months post field FTP
IMGEO2 IceBridge Geometrics 823A Cesium Magnetometer L2 Geolocated Magnetic Anomalies 2 ASCII <1 2 months post field FTP

 

3.8.1.7    Pressure Altimeter
This instrument measures air pressure via a Paroscientific S-1000 Digiquartz Transmitter.

Table 3.21.  Pressure Altimeter

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IAPRS0 IceBridge Paroscientific S-1000 L0 Pressure Altimeter Raw Air Pressure 0 ELSA <1 2 months post field; non critical FTP
IAPRS1B IceBridge Paroscientific S-1000 L1B Pressure Altimeter Time-Tagged Air Pressure 1B ASCII <1 2 months post field FTP

 

3.9 University of Alaska Fairbanks

The University of Alaska Fairbanks (UAF) is a public research university home to seven major research areas. The Geophysical Institute is one of the seven that conducts research into space physics, atmospheric science, seismology, tectonics, and sedimentation.

Provider POCs Email Address
Chris Larsen cflarsen@alaska.edu

 

3.9.1    Instruments and Science Data Products

3.9.1.1    Glacier Lidar

Table 3.22.  Glacier Lidar

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
ILAKP1B IceBridge UAF Lidar Profiler L1B Geolocated Surface Elevation Triplets 1B Binary 20 3 months FTP
ILAKS1B IceBridge UAF Lidar Scanner L1B Geolocated Surface Elevation Triplets 1B LAS 135 3 months after campaign FTP
IPUAF1B IceBridge UAF GPS/IMU L1B Corrected Position and Attitude Data 1B ASCII 1 3 months after campaign FTP

 

3.10 University of California Irvine

The University of California Irvine’s (UCI) department of Earth System Science supports the Rignot Research Group. Relative to Operation IceBridge, the group measures ice thickness with an airborne ground penetrating radar called the Warm Ice Sounding Explorer (WISE) which operates at a center frequency of 2.5 MHz and is optimized to probe temperate ice.

Provider POCs Email Address
Eric Rignot eric.j.rignot@jpl.nasa.gov
Jeremie Mouginot jmougino@uci.edu
Bernd Scheuchl bscheuch@uci.edu

 

3.10.1    Instruments and Science Data Products

3.10.1.1    WISE
This sounder uses 120-mlong wavelengths to penetrate past rough ice surfaces, voids, water pockets, water-filled cracks, and temperate ice (ice at the in-situ-pressure melting point) before they are reflected by the interface between ice and the glacier bed. This makes the system well suited for the study of outlet glaciers with challenging internal structure, i.e. highly absorptive or scattering heterogeneities associated with the presence of liquid water pockets within the ice.

Table 3.23.  WISE

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IRWIS2 IceBridge WISE L2 Geolocated Ice Thickness and Surface Elevation 2 ASCII 14 6 months FTP

 

3.11 Miscellaneous

3.11.1    Data Products

3.11.1.1    Flight Reports

Table 3.24.  Flight Reports

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IFLTRPT IceBridge Mission Flight Reports n/a ASCII and PDF 1 6 months FTP

 

3.11.1.2    Derived Products
The NASA IceBridge Sea Ice Freeboard, Snow Depth, and Thickness (IDCSI4) data set contains derived geophysical data products including sea ice freeboard, snow depth, and sea ice thickness measurements in Greenland and Antarctica retrieved from IceBridge Snow Radar, DMS, CAMBOT, and ATM data sets. The data were collected as part of Operation IceBridge funded campaigns, are stored in American Standard Code for Information Interchange (ASCII) text files, and are available via File Transfer Protocol (FTP) for periodic, ongoing campaigns from 31 March 2009 to the present.

Provider POCs Email Address
Nathan Kurtz nathan.t.kurtz@nasa.gov

 

Table 3.25. Sea Ice Science Data Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IDCSI2 IceBridge Sea Ice Freeboard, Snow Depth, and Thickness 2 ASCII < 1 12 month following deployment end FTP
IDCSI4 IceBridge L4 Sea Ice Freeboard, Snow Depth, and Thickness 4 ASCII < 1 12 months FTP

 

The Bed Machine data set contains a bed topography/bathymetric map of Greenland based on mass conservation, multi-beam data, and other techniques. The data set also includes surface elevation, ice thickness and an ice/ocean/land mask

Provider POCs Email Address
Mathieu Morlighem mathieu.morlighem@uci.edu

 

Table 3.26. Bed Machine Data Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IDBMG4 IceBridge BedMachine Greenland 4 NetCDF 3 12 month FTP

 

The following Tomographic derived products were developed by NASA Jet Propulsion Laboratory (JPL) for swath ice sounding. Data was  collected by the MCoRDs instrument and processed  into bedmap  products:  ice  thickness  maps,  ice  thickness  error  maps,  basal  elevation  maps,  and  basal reflectivity maps.

Provider POCs Email Address
Xiaoqing Wu Xiaoqing.Wu@jpl.nasa.gov

 

Table 3.27.  Tomographic Products

Short Name Product Description Data Level Format Volume per Campaign (GB) Submission Schedule Delivery Mechanism
IRTIT IceBridge Radar L3 Tomographic Ice Thickness 3 HDF5 2 12 Months FTP
IRTTE3 IceBridge Radar L3 Tomographic Ice Thickness Error 3 HDF5 2 12 Months FTP

 

4. Data Stewardship


The NSIDC DAAC, with support from the ESDIS Project, is responsible for ingest, archive, and distribution of all IceBridge data products. This includes Level 0 data (where specified), higher level products, ancillary data, metadata, algorithm source code, documentation, and other information in accordance with EOS Data and Information System (EOSDIS) archive policies. Responsibilities also include the distribution of the above-mentioned products to users in accordance with the IceBridge mission and EOSDIS data distribution policies. Public release of these data shall conform to the NASA Earth Science Data and Information Policy, which can be found at: https://science.nasa.gov/earth-science/earth-science-data/data-information-policy/”>science/earth-science-data/data-information-policy/.

Previously, NSIDC used an abbreviated ingest process (“fasttrack”) which circumvented the approved NASA processes and standards in order to make data available as quickly as possible, and enabled data providers to deliver data with minimal metadata and documentation. That process will no longer be available. All data will be delivered to NSIDC using the steps described below unless ESDIS and the IceBridge Project Science Office grant specific exceptions.

In order to ensure that NASA’s expectations for data preservation and usability are met, NSIDC may delay publication of any data set that is not delivered with full documentation (as specified in the NASA documentation content specifications) or that does not meet delivery requirements.
 

4.1 Acceptance of New Data Sets

Before a new IceBridge data product is sent to the NSIDC DAAC, the following steps must first be implemented:

4.1.1    A description of the data product in question will be documented by the provider and sent to the Operation IceBridge Project Science Office, the ESDIS Project, and the NSIDC DAAC.  This description will include:

  1. A description of the science content of the data product and its relevance to Operation IceBridge science requirements
  2. Level of product (0-4)
  3. Expected data volume (per life of mission)
  4. Current archive location


 

4.1.2    Review by ESDIS and the Project Science Office. Any new product that is proposed will be reviewed by ESDIS and the Operation IceBridge Project Science Office to make sure that the product is scientifically relevant, within the scope of the Operation IceBridge mission objectives, and that sufficient resources are available to support it. An evaluation of its current archive status will be made to determine if the product can be “brokered”, or linked, from its existing location rather than ingested into NSIDC’s data archive. Only when data is judged to be safely archived and sufficiently documented will a brokering arrangement be considered. In the case of brokering, NSIDC enables discovery of the data through appropriate links, but bears no further responsibility to the data.

4.1.3    Create appropriate short names and long names for each data product. NSIDC will do  this in conjunction with the provider.

4.1.4    ESDIS will update this Data Management Plan.

 

4.2  Data Submission Process

This process applies to all IceBridge data sets that are not currently archived in NSIDC’s Earth Core System (ECS) system (unless ESDIS and the IceBridge Project Science Office grant an exception). As of March 2013, only UARC has been granted said exception for the DMS data sets.

As part of each new submission, each provider must provide NSIDC with the information required to create and validate an Earth Science Data Type (ESDT) that defines the structure of the data set. Once created, the ESDT is maintained as long as the data set structure does not change.

The provider is responsible for providing NSIDC with information required for any updates to the ESDT and notifying NSIDC if changes are planned to the content or structure of the data set. The ESDT must be consistent with the content of expected data delivery.

In order to efficiently ingest data into NSIDC’s ECS system, ESDIS has created (through its ECS contractor) a generic tool for creation of necessary metadata and associated files. This tool, called “SIPSMetGen”, is given to each provider along with associated configuration files for its correct operation.

Details of how to run the SIPSMetGen tool will be included with the tool package. Details of how data ingestion to NSIDC will now work using SIPSMetGen can be found in the IceBridge Science Investigator-led Processing System (SIPS) Operational Concept Document located at:
https://n5eil01u.ecs.nsidc.org/PullDir/OIB_SIPSMetGen/latest/SIPSMetGen_2.0.1_UserGuide.pdf.

The providers retain full responsibility for data and control over metadata quality. This process is simply a mechanism for automated ingest to NSIDC.

4.2.1    Before the first submission, the provider is responsible for performing integration testing with NSIDC to ensure that data will routinely be ingested successfully without excessive manual intervention by NSIDC’s Operations staff.

4.2.2    The provider is responsible for running the SIPSMetGen tool and creating the necessary metadata and Product Delivery Record (PDR) files before each data submission. After receipt of ingest status notices from ECS, the provider (with support from NSIDC and the ECS contractor) is responsible for all error correction and re-delivery.

 

4.3 Naming Conventions

Science data files and their associated supporting files (such as browse, quality assurance, preliminary metadata (“premet”), and spatial files) must use a standard naming convention. A file and its associated files should use the same name; the file extension distinguishes the data file from the associated files. File names should include the ESDT shortname, date and time of data collection, version identification, and any additional information that might be needed to uniquely identify the data file.
Example, for ATM L1B data:

Data file: ILATM1B_V01_04212010_04452366_A.h5
Premet file: ILATM1B_V01_04212010_04452366_A.premet
Spatial file: ILATM1B_V01_04212010_04452366_A.spatial

 


 

Abbreviations and Acronyms

AK Alaska
ASCII American Standard Code for Information Interchange
ASF Airborne Sensor Facility
ATM Airborne Topographic Mapper
CAMBOT Continuous Airborne Mapping by Optical Translator
CCAR Colorado Center for Astrodynamics Research
CReSIS Center for Remote Sensing of Ice Sheets
CSV Comma Separated Value
CULPIS-X CU Lidar Profilometer and Imaging System – extended
DAAC Distributed Active Archive Center
dB Decibel
DCN Document Change Notice
DMS Digital Mapping System
ECS EOSDIS Core System
EED EOSDIS Evolution and Development
ELSA Environment for Linked Stream Acquisition
EOS Earth Observing System
EOSDIS EOS Data and Information System
ESD Earth Science Division
ESDIS Earth Science Data and Information System
ESDT Earth Science Data Type
FTP File Transfer Protocol
GB Giga (109) Byte
GHZ Giga Hertz
GPS Global Positioning System
GSFC Goddard Space Flight Center
HDF Hierarchical Data Format
HEX Hexadecimal
HiCARS High Capability Radar Sounder
HSM Hybrid Surface Model
ICARTT International Consortium for Atmospheric Research on Transport and Transformation
ICESat Ice, Cloud and Land Elevation Satellite
IMU Inertial Measurement Units
INS Inertial Navigation System
JPEG Joint Pictures Expert Group
JPL Jet Propulsion Laboratory
Km Kilometers
KML Keyhole Markup Language
L0 – L4 Level 0 through Level 4
LAS Live Access Server
LIDAR Laser Imaging Detection and Ranging
LVIS Land, Vegetation, and Ice Sensor
MB Mega Byte 106 bytes
Mbps Mega bits per second
MCoRDS Multichannel Coherent Radar Depth Sounder
MHz Mega Hertz
NASA National Aeronautics and Space Administration
NMEA National Marine Electronics Association
NetCDF Network Common Data Form
NSERC National Suborbital Education and Research Center
NSF National Science Foundation
NSIDC National Snow and Ice Data Center
PDR Product Delivery Record
PNG Portable Network Graphics
POC Point of Contact
POS Product Order Status
SAR Synthetic Aperture Radar
SARP Student Airborne Research Program
SIPS Science Investigator-led Processing System
STC Science and Technology Center
TBD To Be Determined
UAF University of Alaska Fairbanks
UARC University Affiliated Research Center
UC University of California
UCI University of California Irvine
UTIG University of Texas Institute for Geophysics
VHF Very High Frequency
WISE Warm Ice Sounding Explorer
ZLS Zero-Length Spring Corporation

 

 
Ice on Antarctica's Ellsworth Mountains, 10/22/2012 Ice on the Ellsworth Mountains in Antarctica as seen from the IceBridge DC-8 on Oct. 22, 2012. The Ellsworth Mountains are home to Antarctica’s highest point, Vinson Massif (16,050 ft / 4,892 m). Credit: NASA / James Yungel