AIRS/Aqua Near Real Time (NRT) Level 1B AMSU (A1/A2) geolocated and calibrated brightness temperatures

Federal Geographic Data Committee (FGDC) Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Reference_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: AIRS Science Team/Moustafa Chahine

Publication_Date: 20070726

Title: AIRS/Aqua Near Real Time (NRT) Level 1B AMSU (A1/A2) geolocated and calibrated brightness temperatures

Edition: 005

Geospatial_Data_Presentation_Form: Digital Science Data

Series_Information:

Series_Name:

Issue_Identification:

Publication_Information:

Publication_Place: Greenbelt, MD, USA

Publisher: Goddard Earth Science Data and Information Services Center (GES DISC)

Other_Citation_Details:

Online_Linkage: http://disc.sci.gsfc.nasa.gov/AIRS/data-holdings/by-data-product/amsuL1B_Rad.shtml

Description:

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 will be generated continuously. Global coverage will be obtained twice daily (day and night) on a 1:30pm sun synchronous orbit from a 705-km altitude. The AMSU-A level 1B data set contains AMSU-A calibrated and geolocated brightness temperatures in degrees Kelvin. This data set is generated from AMSU-A Level 1A digital numbers (DN), including 15 microwave channels in the 50 - 90 GHz and 23 - 32 GHz regions of the spectrum. A day's worth of data is divided into 240 scenes each of 6 minute duration. An AMSU-A scene contains 30 cross-track footprints in each of 45 along-track scanlines, for a total of 45 x 30 = 1350 footprints per scene. The AMSU-A is co-aligned with the AIRS instrument onboard the Aqua platform so that successive blocks of 3 x 3 AIRS footprints are contained within the AMSU-A footprint. AMSU-A is primarily a temperature sounder that provides atmospheric information in the presence of clouds, which can be used to correct the AIRS infrared measurements for the effects of clouds. This is possible because non-precipitating clouds are for the most part transparent to microwave radiation, in contrast to visible and infrared radiation which are strongly scattered and absorbed by clouds. Combined with simultaneous measurements from the AIRS and HSB instruments, the calibrated AMSU-A brightness temperatures will also be used to initialize the surface temperature and atmospheric temperature profile required for the retrieval of the final AIRS geophysical products. (The Shortname for this product is AIRABRAD_NRT). Coverage: Global, Twice Daily (Daytime and Nighttime) Resolution: 40.5 km IFOV at nadir Spectral Range: AMSU-A1: 13 channels from 50 - 90 GHz AMSU-A2: 2 channels from 23 - 32 GHz

Purpose:

Not Available

Supplemental_Information:

Not Available

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20130612

Ending_Date: 20130619

Currentness_Reference:Unknown

Status:

Progress: In Work

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: -180.0

East_Bounding_Coordinate: 180.0

North_Bounding_Coordinate: 90.0

South_Bounding_Coordinate: -90.0

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS

Theme_Keyword_Thesaurus: GCMD PLATFORM

Theme_Keyword_Thesaurus: GCMD INSTRUMENT

Theme_Keyword_Thesaurus: PROJECT

Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS

Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY

Theme_Keyword_Thesaurus: DATA SET LANGUAGE

Theme_Keyword: EARTH SCIENCE > SPECTRAL/ENGINEERING > MICROWAVE > BRIGHTNESS TEMPERATURE

Theme_Keyword: AQUA > EARTH OBSERVING SYSTEM, AQUA

Theme_Keyword: AMSU-A > ADVANCED MICROWAVE SOUNDING UNIT-A

Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM

Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM

Theme_Keyword: AQUA > EARTH OBSERVING SYSTEM (EOS), AQUA

Theme_Keyword: Corrected Microwave Antenna Temperatures

Theme_Keyword: Corrected Microwave Antenna Temperatures Uncertainties

Theme_Keyword: Relative_start_date: -7

Theme_Keyword: Nrt

Theme_Keyword: Lance

Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Theme_Keyword: IMAGERY/BASE MAPS/EARTH COVER

Theme_Keyword: ENGLISH

Place:

Place_Keyword_Thesaurus: GCMD

Place_Keyword: OCEAN > ATLANTIC OCEAN

Place_Keyword: OCEAN > INDIAN OCEAN

Place_Keyword: OCEAN > PACIFIC OCEAN

Place_Keyword: GEOGRAPHIC REGION > GLOBAL

Place_Keyword: GEOGRAPHIC REGION > GLOBAL LAND

Place_Keyword: GEOGRAPHIC REGION > GLOBAL OCEAN

Temporal:

Temporal_Keyword_Thesaurus: GCMD

Temporal_Keyword: Twice Per Day (daytime And Nighttime)

Access_Constraints: Data are expected to be available from the GSFC Earth Sciences (GES) Distributed Active Archive Center (DAAC) about one year after launch. The DAAC Science Team will provide regular updates regarding data product releases in the future.

Use_Constraints:

Not Available

Browse_Graphic:

Browse_Graphic_File_Name: http://disc.sci.gsfc.nasa.gov/AIRS/data-holdings/by-data-product/images/airsabrad.jpg

Browse_Graphic_File_Description:

Sample image of AIRABRAD

Browse_Graphic_File_Type:

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

V5_CalVal_Status_Summary.pdf http://disc.sci.gsfc.nasa.gov/AIRS/documentation/v5_docs/AIRS_V5_Release_User_Docs/V5_CalVal_Status_Summary.pdf

Logical_Consistency_Report:

Not Available

Completeness_Report:

Not Available

Lineage:

Process_Step:

Process_Description:

Not Available

Process_Date: Unknown

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 40.6 km IFOV at nadir

Longitude_Resolution: 40.6 km IFOV at nadir

Geographic_Coordinate_Units: Decimal degrees

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NASA/GSFC/SED/ESD/GCDC/GESDISC > 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

Contact_Person: GES DISC HELP DESK SUPPORT GROUP

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Goddard Earth Sciences Data and Information Services Center

Address: Code 610.2

Address: NASA Goddard Space Flight Center

City: Greenbelt

State_or_Province: MD

Postal_Code: 20771

Country: USA

Contact_Voice_Telephone: 301-614-5224

Contact_Facsimile_Telephone: 301-614-5268

Contact_Electronic_Mail_Address: gsfc-help-disc@lists.nasa.gov

Resource_Description: GES_DISC_AIRABRAD_NRT_V005

Distribution_Liability:

Not Available

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: HDF-EOS

Transfer_Size: 0.4 MB

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://disc.gsfc.nasa.gov/

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

ftp://discnrt1.gesdisc.eosdis.nasa.gov/ftp/data/Aq...

Access_Instructions:

Access the AIRS/Aqua Near Real Time (NRT) Level 1B AMSU (A1/A2) geolocated and calibrated brightness temperatures data by FTP. User registration is required. Register for a username and password at the Land Atmosphere Near real-time Capability for EOS (LANCE) web site (http://earthdata.nasa.gov/lance).

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://discnrt1.gesdisc.eosdis.nasa.gov/opendap/Aq...

Access_Instructions:

Access the AIRS/Aqua NRT Level 1B AMSU (A1/A2) geolocated and calibrated brightness temperatures data through OPeNDAP.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://reverb.echo.nasa.gov/reverb/#utf8=%E2%9C%93...

Access_Instructions:

Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://www-airs.jpl.nasa.gov/

Access_Instructions:

AIRS home page at NASA/JPL. General information on the AIRS instrument suite, algorithms, and other AIRS-related activities can be found. The Atmospheric Infrared Sounder (AIRS) instrument suite is designed to measure the Earth's atmospheric water vapor and temperature profiles on a global scale. It is comprised of a space-based hyperspectral infrared instrument (AIRS) and two multichannel microwave instruments, the Advanced Microwave Sounding Unit (AMSU-A) and the Humidity Sounder for Brazil (HSB).

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://disc.gsfc.nasa.gov/AIRS/index.shtml

Access_Instructions:

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.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://disc.sci.gsfc.nasa.gov/nrt/data-holdings/ai...

Access_Instructions:

AIRS NRT Data Products

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

ftp://discnrt1.gesdisc.eosdis.nasa.gov/ftp/data/Aq...

Access_Instructions:

README Document for AIRABRAD_NRT

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20100623

Metadata_Review_Date: 20130319

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: ED ESFANDIARI

Contact_Position: DIF AUTHOR

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Goddard Earth Sciences Data and Information Services Center

Address: Code 610.2

Address: NASA Goddard Space Flight Center

City: Greenbelt

State_or_Province: MD

Postal_Code: 20771

Country: USA

Contact_Voice_Telephone: 301-614-5960

Contact_Facsimile_Telephone: 301-614-5268

Contact_Electronic_Mail_Address: asghar.e.esfandiari@nasa.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time