HIRDLS/Aura Level 2 Geophysical Parameters (on a pressure grid)

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: HIRDLS Science Team
Publication_Date: 20121201
Title: HIRDLS/Aura Level 2 Geophysical Parameters (on a pressure grid)
Edition: 007
Geospatial_Data_Presentation_Form: Digital Science Data
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place: Greenbelt, MD, USA
Publisher: NASA Goddard Earth Science Data and Information Services Center (GES DISC)
Other_Citation_Details:
Online_Linkage: http://disc.gsfc.nasa.gov/Aura/HIRDLS/
Description:
Abstract:
The "HIRDLS/Aura Level 2 Geophysical Parameters" data product (HIRDLS2) contains an entire day's worth of Level-2 vertical profiles of O3, HNO3, H2O, CFC-11, CFC-12, N2O, NO2, N2O5, ClONO2, temperature, geopotential height, and aerosol extinction at 12.1 and 8.3 microns, as well as cloud top pressure. The HIRDLS2 data are provided on 24 levels per decade of pressure corresponding to about 1 km vertical resolution. The vertical range of the data depends on the measured species. The current and final version of this product is 7. Of the original targeted species, only CH4 was not retrieved in this version. The data are stored in the version 5 Hierarchical Data Format for the Earth Observing System (HDF-EOS5), which is an extension of the HDF5 format. Each file contains a single swath object with one day of data (measured species and species precision), geolocation fields (e.g. time, latitude, longitude, pressure), and swath attributes, along with file level metadata. Each file contains approximately 5600 profile scans. Time stamps are in TAI-93 format (seconds since January 1, 1993) as well as in seconds since start of day. Arrays with missing data are set to a constant fill value (-999.0). The High Resolution Dynamics Limb Sounder (HIRDLS) aboard the EOS Aura spacecraft was launched July 15, 2004. The instrument was designed to scan the Earth limb at multiple azimuth angles, measuring infrared emissions in 21 channels ranging from 6.12 to 17.76 microns in the upper troposphere, stratosphere and mesosphere. On July 30, 2004 when the instrument was switched on, it was discovered that a piece of plastic film was blocking most of the HIRDLS scanning mirror. Only a small portion of the mirror at the far azimuth scan (away from the sun side) was clear for making observations of the Earth's atmosphere. Several attempts to remove the blockage were unsuccessful. This obstruction resulted in limited data coverage between -64 and +82 degrees latitude, and thus excluded observations over the Antarctic region. The first reliable data are from January 29, 2005, earlier data from January 21 to 28 are of substandard quality and are not included in version 7. From January 3 to March 17, 2008 the chopper frequency became erratic, and data for these days should be used with caution. The HIRDLS instrument remained operational until March 17, 2008 when the chopper stalled. Parameters contained in the data files include the following: Variable Name|Description|Units O3|Ozone (O<sub>3</sub>) Volume Mixing Ratio|mol/mol HNO3|Nitric Acid (HNO<sub>3</sub>) Volume Mixing Ratio|mol/mol CFC11|CFC-11 (CFCl<sub>3</sub>) Volume Mixing Ratio|mol/mol CFC12|CFC-12 (CF<sub>2</sub>Cl<sub>2</sub>) Volume Mixing Ratio|mol/mol ClONO2|Chlorine Nitrate (ClONO<sub>2</sub>) Volume Mixing Ratio|mol/mol N2O|Nitrous Oxide (N<sub>2</sub>O) Volume Mixing Ratio|mol/mol N2O5|Dinitrogen Pentoxide (N<sub>2</sub>O<sub>5</sub>) Volume Mixing Ratio|mol/mol NO2|Nitrogen Dioxide (NO<sub>2</sub>) Volume Mixing Ratio|mol/mol H2O|Water Vapor (H<sub>2</sub>O) Volume Mixing Ratio|mol/mol Temperature|Temperature Profile|K CloudTopPressure|Pressure of Top of Clouds|hPa 8.3MicronExtinction|Aerosol Extinction at 8.3 Microns|1/km 12.1MicronExtinction|Aerosol Extinction at 12.1 Microns|1/km GPH|Smoothed Geopotential Height|m RawGPH|Raw Geopotential Height|m End of parameter information
Purpose:
Not Available
Supplemental_Information:
REFERENCE: List of HIRDLS publications can be found at http://www.eos.ucar.edu/hirdls/docs/
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20050129
Ending_Date: 20080317
Currentness_Reference:Unknown
Status:
Progress: Complete
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: 80.0
South_Bounding_Coordinate: -64.0
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: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL EXTINCTION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ALTITUDE > GEOPOTENTIAL HEIGHT
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > HALOCARBONS AND HALOGENS > CHLORINE NITRATE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > HALOCARBONS AND HALOGENS > CHLOROFLUOROCARBONS > CFC-11
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > HALOCARBONS AND HALOGENS > CHLOROFLUOROCARBONS > CFC-12
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > NITROGEN COMPOUNDS > DINITROGEN PENTOXIDE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > NITROGEN COMPOUNDS > NITRIC ACID
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > NITROGEN COMPOUNDS > NITROGEN DIOXIDE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > NITROGEN COMPOUNDS > NITROUS OXIDE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > OXYGEN COMPOUNDS > OZONE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > TEMPERATURE PROFILES
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD TOP PRESSURE
Theme_Keyword: AURA > AURA
Theme_Keyword: HIRDLS > HIGH-RESOLUTION DYNAMICS LIMB SOUNDER
Theme_Keyword: AURA > EARTH OBSERVING SYSTEM (EOS), AURA
Theme_Keyword: EOS > EARTH OBSERVING SYSTEM
Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: CWIC > CEOS WGISS INTEGRATED CATALOG
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: GEOGRAPHIC REGION > GLOBAL
Place_Keyword: VERTICAL LOCATION > STRATOSPHERE
Place_Keyword: VERTICAL LOCATION > TROPOSPHERE
Temporal:
Temporal_Keyword_Thesaurus: GCMD
Temporal_Keyword: Daily
Access_Constraints: Not Available
Use_Constraints:
Please review the <a href="http://disc.sci.gsfc.nasa.gov/Aura/data-holdings/HIRDLS/documents/HIRDLS-V7-DQD.pdf">HIRDLS Data Description and Quality Version 7 Document</a> for recommendations on the use of the data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: JOHN C. GILLE
Contact_Person_Primary:
Contact_Person: LESLEY J GRAY
Contact_Position: INVESTIGATOR
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: National Center for Atmospheric Research
Address: PO Box 3000
City: Boulder
State_or_Province: Colorado
Postal_Code: 80307
Country: USA
Contact_Address:
Address_Type: Mailing and Physical Address
Address: University of Oxford Department of Physics
Address: Clarendon Laboratory
Address: Parks Road
City: Oxford
Postal_Code: OX1 3PU
Country: UNITED KINGDOM
Contact_Voice_Telephone: 303-497-8062
Contact_Voice_Telephone: +44/0 1865 272926
Contact_Facsimile_Telephone: +44/0 1865 272923
Contact_Electronic_Mail_Address: gille@ucar.edu
Contact_Electronic_Mail_Address: gray@atm.ox.ac.uk
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Please review the <a href="http://disc.sci.gsfc.nasa.gov/Aura/data-holdings/HIRDLS/documents/HIRDLS-V7-DQD.pdf">HIRDLS Data Description and Quality Version 7 Document</a> for details on the quality of the data.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: Not Available
Altitude_Resolution: 1 km
Altitude_Distance_Units: Not Available
Altitude_Encoding_Method: Implicit coordinate
Depth_System_Definition:
Depth_Datum_Name: Not Available
Depth_Resolution: 1 km
Depth_Distance_Units: Not Available
Depth_Encoding_Method: Implicit coordinate
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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_HIRDLS2_V007
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: HDF-EOS5
Transfer_Size: 64 GB (~56 MB per file)
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://acdisc.gsfc.nasa.gov//data/s4pa/Aura_HIRDLS_...
Access_Instructions:
Access the data by anonymous FTP.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://mirador.gsfc.nasa.gov/cgi-bin/mirador/prese...
Access_Instructions:
Data from the GES-DISC Mirador fast data search and download system.
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.eos.ucar.edu/hirdls/
Access_Instructions:
The HIRDLS-US Homepage at UCAR/NCAR.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.atm.ox.ac.uk/hirdls/
Access_Instructions:
The HIRDLS-UK Homepage at Oxford University.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
ftp://acdisc.gsfc.nasa.gov/data/s4pa/Aura_HIRDLS_L...
Access_Instructions:
HIRDLS2 README document
Fees: None
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Metadata_Reference_Information:
Metadata_Date: 20120423
Metadata_Review_Date: 20130322
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: JAMES EDWARD JOHNSON
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: NASA Goddard Space Flight Center
Address: Code 610.2
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Voice_Telephone: 301-614-5121
Contact_Electronic_Mail_Address: James.Johnson@nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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