AIRS/Aqua Level 3 Pentad quantization in physical units (AIRS-only) V005 (AIRS3QP5) at GES DISC
Entry ID: GES_DISC_AIRS3QP5_V005

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Summary
Abstract: AIRS/Aqua Level 3 pentad quantization product in physical units (AIRS Only).

The quantization products (QP) are distributional summaries derived from the Level-2 standard retrieval products (of swath type) to provide a more comprehensive set of statistical summaries than the traditional means and standard deviation. The QP products combine the Level 2 standard data parameters over grid cells of 5 x 5 deg spatial extent for temporal periods of five days. Pentads always start on the 1st, 6th, 11th, 16th, 21st, and 26th days of the month and may contain as few as 3 days of data or as much as 6 days. They preserve the multivariate distributional features of the original data and so provide a compressed data set that more accurately describes the disparate atmospheric states that is in the original Level-2 swath data set.

The geophysical parameters are: Air Temperature and Water Vapor profiles (11 levels/layers), Cloud fraction (vertical distribution).

(The Shortname for this product is AIRS3QP5)

Related URL
Link: GET DATA > ON-LINE ARCHIVE
Description: Access the AIRS/Aqua Level 3 pentad quantization product (Airs Only) data by FTP.


Link: GET DATA > MIRADOR
Description: Access the AIRS/Aqua Level 3 pentad quantization product (Airs Only) data using Mirador.


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.


Link: VIEW RELATED INFORMATION > USER'S GUIDE
Description: README Document for AIRS3QP5


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

Data Set Citation
Dataset Originator/Creator: AIRS Science Team/Moustafa Chahine
Dataset Title: AIRS/Aqua Level 3 Pentad quantization in physical units (AIRS-only)
Dataset Series Name: AIRS3QP5
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/AIRS3QP5_V005.html


Temporal Coverage
Start Date: 2007-06-01


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: 5 degrees
Longitude Resolution: 5 degrees
Temporal Resolution: 5 days


Science Keywords
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >AIR TEMPERATURE >AIR TEMPERATURE PROFILE    [Definition]
ATMOSPHERE >ATMOSPHERIC WATER VAPOR >WATER VAPOR >SPECIFIC HUMIDITY PROFILE    [Definition]
ATMOSPHERE >CLOUDS >CLOUD PROPERTIES >CLOUD VERTICAL DISTRIBUTION >CLOUD FRACTION VERTICAL DISTRIBUTION    [Definition]


ISO Topic Category
IMAGERY/BASE MAPS/EARTH COVER


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]
AQUA >Earth Observing System (EOS), AQUA    [Information]
OPENDAP >Open-source Project for a Network Data Access Protocol    [Information]
CWIC >CEOS WGISS Integrated Catalog    [Information]


Quality
The L3Q products combine the Level 2 standard data parameters over grid cells of 5 x 5 deg spatial extent for temporal periods of five days and one month. The report for each grid cell provides a number of representative values and their associated weights. The sample of lower level data points with the same representative is called a “cluster”, and its representative is the “cluster mean”. Cluster membership is determined by assigning lower level data points to clusters so that that the errors between original values and their representatives are minimized. This constraint prevents the creation of single-data-point clusters.

As a general rule, Level 2 retrieved quantities whose quality indicators are “best” (=0) or “good” (=1) are included in the data that generate the L3Q product. Users MUST read information contained within the two documents below to avoid misuse of the L3Q products in their research.

V5_L2_Standard Product_QuickStart.pdf
(http://disc.sci.gsfc.nasa.gov/AIRS/documentation/v5_docs/AIRS_V5_Re...
V5_L2_Quality_Control_and_Error_Estimation.pdf
(http://disc.sci.gsfc.nasa.gov/AIRS/documentation/v5_docs/AIRS_V5_Re...)


Access Constraints
Not publicly available at the moment.


Keywords
RADIANCE
INFRARED
CALIBRATED
GEOLOCATED
TEMPERATURE
WATER VAPOR
EOSDIS


Data Set Progress
IN WORK


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: 43 MB
Distribution_Format: HDF-EOS
Fees: None


Personnel
ED ESFANDIARI
Role: DIF AUTHOR
Phone: 301-614-5960
Fax: 301-614-5268
Email: asghar.e.esfandiari at 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



Creation and Review Dates
DIF Creation Date: 2007-01-05
Last DIF Revision Date: 2013-10-21

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