AIRS/Aqua Level 3 Monthly CO2 in the free troposphere (AIRS+AMSU) V005 (AIRX3C2M) at GES DISC
Entry ID: GES_DISC_AIRX3C2M_V005

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Summary
Abstract: This is the AIRS mid-tropospheric Carbon Dioxide (CO2) Level 3 Monthly Gridded Retrieval, from the AIRS and AMSU instruments on board of Aqua satellite. It is a monthly gridded data, at 2.5x2 deg (lon)x(lat) grid cell size. The data is in mole fraction units (data x 10^6 =ppm in volume). This quantity is not a total column quantity because the sensitivity function of the AIRS mid-tropospheric CO2 retrieval system peaks over the altitude range 6-10 km. The quantity is what results when the true atmospheric CO2 profile is weighted, level-by-level, by the AIRS sensitivity function. The file format is HDF-EOS 2.12 corresponding to HDF4.

This AIRS mid-tropospheric CO2 Level 3 Monthly Gridded Retrieval Product contains standard retrieval means, standard deviations and input counts as well as the latitude and longitude arrays giving the centers of the grid boxes. Each file covers a calendar month. The mean values are simply the arithmetic means of the individual CO2 retrievals which fall within that grid box over the month.

The mid-tropospheric CO2 retrievals have been averaged and binned into 2.5 x 2 deg grid cells, from -180.0 to +180.0 deg longitude and from -60.0 to +90.0 deg latitude. For each grid map of 4-byte floating-point mean values there is a corresponding 4-byte floating-point map of standard deviation and a 2-byte integer grid map of counts. The counts map provides the user with the number of points per bin that were included in the mean.

(The Shortname for this product is AIRX3C2M).
With the availability of newly released V6 products, this product is no longer produced effective 2012/02/29.

Related URL
Link: GET DATA > ON-LINE ARCHIVE
Description: Access the AIRS/Aqua Level 3 Monthly CO2 in the free troposphere (AIRS+AMSU) data by FTP.


Link: GET DATA > MIRADOR
Description: Access the AIRS/Aqua Level 3 Monthly CO2 in the free troposphere (AIRS+AMSU) data using Mirador.


Link: GET DATA > OPENDAP DIRECTORY (DODS)
Description: Access the AIRS/Aqua Level 3 Monthly CO2 in the free troposphere (AIRS+AMSU) data through OPeNDAP.


Link: GET DATA > SSW
Description: Access the AIRS/Aqua Level 3 Monthly CO2 in the free troposphere (AIRS+AMSU) data using Simple Subset Wizard (Search and subset by date and spatial region).


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: -60.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Originator/Creator: AIRS Science Team/Moustafa Chahine
Dataset Title: AIRS/Aqua Level 3 Monthly CO2 in the free troposphere (AIRS+AMSU)
Dataset Series Name: AIRX3C2M
Dataset Release Date: 2008-12-15
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/AIRX3C2M_V005.html


Temporal Coverage
Start Date: 2002-09-01
Stop Date: 2012-02-29


Data Resolution


Science Keywords
ATMOSPHERE >ATMOSPHERIC RADIATION >ABSORPTION    [Definition]
ATMOSPHERE >ATMOSPHERIC RADIATION >RADIATIVE FORCING    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >CARBON AND HYDROCARBON COMPOUNDS >CARBON DIOXIDE    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Platform
AQUA >Earth Observing System, AQUA    [Information]


Instrument
AIRS >Atmospheric Infrared Sounder    [Information]


Project
ESIP >Earth Science Information Partners Program    [Information]
CWIC >CEOS WGISS Integrated Catalog    [Information]


Quality
Users should read information contained within the two documents below to avoid misuse of the data in their research.

AIRS-V5-Tropospheric-CO2-Products.pdf
http://disc.sci.gsfc.nasa.gov/AIRS/documentation/AIRS/documentation...
V5_CalVal_Status_Summary.pdf
http://disc.sci.gsfc.nasa.gov/AIRS/documentation/v5_docs/AIRS_V5_Re...


Data Set Progress
COMPLETE


Originating Center
Goddard Earth Sciences Data and Information Services Center (GES DISC) and JPL


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_Format: HDF-EOS


Personnel
THOMAS HEARTY
Role: DIF AUTHOR
Role: TECHNICAL CONTACT
Phone: 301-614-6513
Fax: 301-614-5268
Email: Thomas.J.Hearty 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: 2008-12-12
Last DIF Revision Date: 2013-10-21

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