AIRS/Aqua Level 2G Precipitation Estimate V005 (AIRG2SSD) at GES DISC
Entry ID: GES_DISC_AIRG2SSD_V005

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Summary
Abstract: The Atmospheric Infrared Sounder (AIRS) is a facility instrument aboard the second Earth Observing System (EOS) polar-orbiting platform, EOS Aqua. In combination with the Advanced Microwave Sounding Unit (AMSU) and the Humidity Sounder for Brazil (HSB), AIRS constitutes an innovative atmospheric sounding group of visible, infrared, and microwave sensors. AIRS data are generated continuously. Global coverage will be obtained twice daily (day and night) on a 1:30pm sun synchronous orbit from a 705-km altitude.

This precipitation estimate from AIRS is using TOVS-like algorithm, and is intended for merging into the precipitation product of the Global Precipitation Climatology Project (GPCP). The precipitation estimate from AIRS Level 2 Support product, which are 6-min swath granules (240 per day) are combined here into one daily "Level 2G" global grid with dimensions (24x1440x720). Thus every hour is a "layer", and the resulting grid cell size is 0.25 degree (~25 km). Thus grid size is made to fit TRMM products. Since AIRS precipitation is retrieved at AMSU footprint resolution, which is about 45 km at nadir, many grid cells in this 0.25-deg grid are "empty". The data are stored such that the first line is the South Pole. The geolocation information for every hour-layer is also provided in the file.

(The Shortname for this product is AIRG2SSD).
With the availability of newly released V6 products, this product is no longer produced effective 2013/02/28.

Related URL
Link: GET DATA > ON-LINE ARCHIVE
Description: Access the AIRS daily Level 2G global grid data through anonymous FTP


Link: GET DATA > MIRADOR
Description: Access the AIRS daily Level 2G global grid data using Mirador.


Link: GET DATA > OPENDAP DATA (DODS)
Description: Access the AIRS daily Level 2G global grid data though OPeNDAP


Link: GET DATA > ECHO
Description: Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.


Link: VIEW PROJECT HOME PAGE
Description: AIRS home page at NASA/JPL. General information on the AIRS instrument, algorithms, and other AIRS-related activities can be found.


Link: VIEW RELATED INFORMATION
Description: AIRS data support home page at Goddard Earth Sciences Data Information and Service Center/Distributed Active Archive Center (GES DISC DAAC). Online documentation, software to read, visualize and analyze AIRS data and data access information are available from this web site.


Geographic Coverage
 N: 90.0 S: -90.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Originator/Creator: AIRS Science Team (Joel Susskind, NASA/GSFC)
Dataset Title: AIRS/Aqua Level 2G Precipitation Estimate
Dataset Series Name: AIRG2SSD
Dataset Release Date: 2007-07-26
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: Goddard Earth Science Data and Information Services Center (GES DISC)
Version: 005
Data Presentation Form: Digital Science Data
Online Resource: http://disc.sci.gsfc.nasa.gov/datacollection/AIRG2SSD_V005.html


Temporal Coverage
Start Date: 2002-08-30
Stop Date: 2013-02-28


Location Keywords
OCEAN > ATLANTIC OCEAN
OCEAN > INDIAN OCEAN
OCEAN > PACIFIC OCEAN
GEOGRAPHIC REGION > GLOBAL
GEOGRAPHIC REGION > GLOBAL LAND
GEOGRAPHIC REGION > GLOBAL OCEAN


Data Resolution
Latitude Resolution: 25 km
Longitude Resolution: 25 km
Temporal Resolution: Once per day


Science Keywords
ATMOSPHERE >CLOUDS >CLOUD PROPERTIES >CLOUD FREQUENCY    [Definition]
ATMOSPHERE >CLOUDS >CLOUD PROPERTIES >CLOUD TOP PRESSURE    [Definition]
ATMOSPHERE >PRECIPITATION >PRECIPITATION AMOUNT    [Definition]
ATMOSPHERE >PRECIPITATION >RAIN    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
ENVIRONMENT


Platform
AQUA >Earth Observing System, AQUA    [Information]


Instrument
AIRS >Atmospheric Infrared Sounder    [Information]


Project
DODS >Distributed Oceanographic Data System    [Information]
EOSDIS >Earth Observing System Data Information System    [Information]
ESIP >Earth Science Information Partners Program    [Information]
OPENDAP >Open-source Project for a Network Data Access Protocol    [Information]
CWIC >CEOS WGISS Integrated Catalog    [Information]


Access Constraints
None


Keywords
RADIANCE
INFRARED
CALIBRATED
GEOLOCATED
TEMPERATURE
EOSDIS


Data Set Progress
COMPLETE


Originating Center
GES DISC


Data Center
Goddard 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    [Information]
Data Center URL: http://disc.gsfc.nasa.gov/

Data Center Personnel
Name: GES DISC HELP DESK SUPPORT GROUP
Phone: 301-614-5224
Fax: 301-614-5268
Email: gsfc-help-disc at lists.nasa.gov
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA



Distribution
Distribution_Media: FTP
Distribution_Size: 25.8 MB
Distribution_Format: HDF-EOS
Fees: None


Personnel
ANDREY SAVTCHENKO
Role: DIF AUTHOR
Role: TECHNICAL CONTACT
Phone: 301-614-5705
Fax: 301-614-5268
Email: Andrey.Savtchenko at nasa.gov
Contact Address:
Distributed Active Archive Center Global Change Data Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA



Creation and Review Dates
DIF Creation Date: 2011-09-09
Last DIF Revision Date: 2014-03-25

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