GPM AMSR-2 on GCOM-W1 Common Calibrated Brightness Temperature L1C 1.5 hours 10 km V05 (GPM_1CGCOMW1AMSR2) at GES DISC
Version 5 is the current version of the data set. Version 4 is no longer available and has been superseded by Version 5. 1CAMSR2 contains common calibrated brightness temperature from the AMSR2 passive microwave instrument flown on the GCOMW1 satellite. This products contains 6 swaths. Swath 1 has channels 10.65V 10.65H. Swath 2 has channels 18.7V 18.7H. Swath 3 has channels 23.8V 23.8H. Swath 4 has channels 36.5V 36.5H. Swath S5 has 2 high frequency A-Scan channels (89V 89H). Swath S6 has 2 high frequency B-Scan channels (89V 89H). Data for all six swaths is observed in the same revolution of the instrument. High frequency A and high frequency B data are observed in separate feedhorns. All 1C products have a common L1C data structure, simple and generic. Each L1C swath includes scan time, latitude and longitude, scan status, quality, incidence angle, Sun glint angle, and the intercalibrated brightness temperature (Tc). One or more swaths are included in a product. The radiometer data are recalibrated to a common basis so that precipitation products derived from them are consistent.
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| Spatial Extent: | Bounding Rectangle: N: 90 S: -90 E: 180 W: -180 |
Data Format(s): | Distribution: HDF5 |
| Temporal Extent: | Platform(s): | GCOM-W1 | |
| Data Center(s): | NASA/GSFC/SED/ESD/GCDC/GESDISC | Instrument(s): | AMSR2 |
| Version: | 05 | ||
- Title: GPM AMSR-2 on GCOM-W1 Common Calibrated Brightness Temperature L1C 1.5 hours 10 km V05
- Creator: Wesley Berg
- Publisher: Goddard Earth Sciences Data and Information Services Center (GES DISC)
- Release Date: 2016-03-14T00:00:00.000Z
- Linkage: https://disc.gsfc.nasa.gov/datacollection/GPM_1CGCOMW1AMSR2_05.html
10.5067/GPM/AMSR2/GCOMW1/1C/05
- READ-ME: https://gpm1.gesdisc.eosdis.nasa.gov/data/GPM_L2/doc/README.GPM.pdf, README Document
- GENERAL DOCUMENTATION: https://pps.gsfc.nasa.gov/Documents/V05ReleaseNotes/L1C_V05_Release_Notes.pdf, Release Notes
- ANOMALIES: ftp://gpmweb2.pps.eosdis.nasa.gov/tsdis/AB/docs/gpm_anomalous.html, GPM and partner sensors anomalous events
- GENERAL DOCUMENTATION: https://suzaku.eorc.jaxa.jp/GCOM_W/w_amsr2/amsr2_body_main.html, Instrument Description from JAXA
- GENERAL DOCUMENTATION: https://www.star.nesdis.noaa.gov/mirs/amsr2.php, Instrument Description from NOAA
Collection Information
Data Identification
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Processing Level
1
- Quality The L1C products contain brightness temperatures that have been intercalibrated to a common basis and are no longer the original instrument brightness temperatures. Channels not relevant to precipitation retrievals are not included. The recalibration for most radiometers is a simple 2-point, linear adjustment. For the water vapor sounding channels, this is a simple offset. In the case of AMSR2, the adjustments are piecewise linear with more than two points to approximate the non-linear nature of the calibration of that instrument. The goal is to make the brightness temperatures consistent to 0.1K. That is not to say the calibration is accurate to this level; there are no suitable standards to assure absolute accuracy. The 0.1K level of consistency has been achieved in most cases, but in the case of the channels near 90 GHz, the uncertainty is somewhat greater. Also, some radiometers are not stable enough to permit this level of consistency.
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Collection Progress
Active
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Use Constraints
The Earth Observing System Data and Information System (EOSDIS) data use policy for NASA data can be accessed at https://earthdata.nasa.gov/earth-observation-data/data-use-policy. For information on how to properly cite and acknowledge data from the NASA GES DISC, refer to https://disc.gsfc.nasa.gov/information/documents?title=data-policy.
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Access Constraints
None
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Title: Intercalibration of the GPM Radiometer Constellation
Publication Date: 2016-01-01
Author(s): Berg, W. et al.
Series: J. Atmos. Oceanic Technol.
Volume: 33
Pages: 2639-2654
DOI: 10.1175/JTECH-D-16-0100.1
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Title: Fundamental Climate Data Records of Microwave Brightness Temperatures
Publication Date: 2018-01-01
Author(s): Berg, W., R. Kroodsma, C. D. Kummerow, and D. S. McKague
Series: Remote Sensing
Volume: 10(8)
Pages: 1306
DOI: 10.3390/rs10081306
Data Dates
| Creation | |
| Last Revision |
Publication References
Related URLs
Other Descriptive Keywords
Ancillary Keywords
- Atmosphere, Precipitation, Water Vapor
ISO Topic Categories
- CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Acquisition Information
Projects
| Project Short Name | Campaigns | Project Dates |
|---|---|---|
| GPM | No campaigns listed. | No dates provided. |
Temporal Information
Spatial Information
| Coverage Type | Zone Identifier | Geometry | Granule Representation |
|---|---|---|---|
| HORIZONTAL | GEODETIC | GEODETIC |
Location Keywords
- GEOGRAPHIC REGION
- TROPICS
Data Centers
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NASA/GSFC/SED/ESD/GCDC/GESDISC
ARCHIVERGoddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
This data center does not have any addresses listed.
This data center does not have any contact mechanisms listed.
Data Contacts
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WILLIAM OLSON
InvestigatorWILLIAM OLSON
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NASA Goddard Space Flight Center
Mailstop 612
Greenbelt, MD 20771
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ANDREY SAVTCHENKO
Metadata AuthorANDREY SAVTCHENKO
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Distributed Active Archive Center Global Change Data Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt, MD 20771
301-614-5705
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GES DISC HELP DESK SUPPORT GROUP
Data Center ContactGES DISC HELP DESK SUPPORT GROUP
NASA/GSFC/SED/ESD/GCDC/GESDISC-
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
Greenbelt, MD 20771
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Archive And Distribution Information
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Format: HDF5
Format Type: Native
Media: Online Archive
Fees: None
File Distribution Information
There is no direct distribution information for this collection.