MLS/Aura Level 2 Hydrogen Cyanide (HCN) Mixing Ratio

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: EOS MLS Science Team
Publication_Date: 20070108
Title: MLS/Aura Level 2 Hydrogen Cyanide (HCN) Mixing Ratio
Edition: 002
Geospatial_Data_Presentation_Form: Digital Science Data
Series_Information:
Series_Name: ML2HCN
Issue_Identification:
Publication_Information:
Publication_Place: Greenbelt, MD, USA
Publisher: NASA Goddard Earth Science Data and Information Services Center
Other_Citation_Details:
Online_Linkage: http://disc.gsfc.nasa.gov/datacollection/ML2HCN_V002.html
Description:
Abstract:
ML2HCN is the EOS Aura Microwave Limb Sounder (MLS) standard product for hydrogen cyanide derived from radiances measured primarily by the 190 GHz radiometer. The current version is 2.3. Spatial coverage is near-global (-82 deg. to +82 deg. latitude), with each profile spaced 1.5 deg. or ~165 km along the orbit track (roughly 15 orbits per day). The recommended useful vertical range is from 10 to 0.1 hPa, and the vertical resolution is between 8 and 12 km. Users of the ML2HCN data product should read section 3.9 of the EOS MLS Version 2.2 and 2.3 Level 2 Data Quality and Description Document for more information (http://mls.jpl.nasa.gov/data/v2_data_quality_document.pdf). Users are encouraged to register with the MLS science team at https://mls.jpl.nasa.gov/forms/reguser.php to obtain updates and information about this data product. The data are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5), which is based on the version 5 Hierarchical Data Format, or HDF5. Each file contains two swath objects (one with profile data, the other with column data), each with a set of data and geolocation fields, swath attributes, and metadata. The data fields include the geophysical parameter values and precision (standard deviation), convergence values, data quality, and a status flag. The geolocation fields include a time stamp in TAI-93 format (seconds since January 1, 1993), geodetic latitude and longitude, and pressure level values, as well as local solar time, solar zenith angle, line of sight angle, and orbit geodetic angle. There is one file per day.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: * Pommrich, R., R. Mueller, J.U. Grooss, G. Gunther, P. Konopka, M. Riese, A. Heil, M. Schultz, H.C. Pumphrey, and K.A. Walker, "What causes the irregular cycle of the atmospheric tape recorder signal in HCN?", Geophys. Res. Lett. 37, L16805, 10.1029/2010GL044056, 2010. * Li, Q., P.I. Palmer, H.C. Pumphrey, P. Bernath, and E. Mahieu, "What drives the observed variability of HCN in the troposphere and lower stratosphere?", Atmos. Chem. Phys. 9, 8531-8543, 2009. * Pumphrey, H.C., C. Boone, K.A. Walker, P. Bernath, and N.J. Livesey, "The tropical tape recorder observed in HCN", Geophys. Res. Lett. 35, L05801, doi:10.1029/2007GL032137, 2008. * Cofield, R.E., and P.C. Stek, "Design and field-of-view calibration of 114-660 GHz optics of the Earth Observing System Microwave Limb Sounder", IEEE Trans. Geosci. Remote Sensing 44, no. 5, 1166-1181, May 2006. * Pumphrey, H.C., C.J. Jimenez, and J.W. Waters, "Measurement of HCN in the middle atmosphere by EOS MLS", Geophys. Res. Lett. 33, L08804, doi:10.1029/2005GL025656, 2006.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20040808
Ending_Date: Unknown
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: 82.0
South_Bounding_Coordinate: -82.0
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 > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > HYDROGEN CYANIDE
Theme_Keyword: AURA > EARTH OBSERVING SYSTEM, AURA
Theme_Keyword: MLS > MICROWAVE LIMB SOUNDER
Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM
Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM
Theme_Keyword: AURA > EARTH OBSERVING SYSTEM (EOS), AURA
Theme_Keyword: CWIC > CEOS WGISS INTEGRATED CATALOG
Theme_Keyword: Hcn
Theme_Keyword: Eosdis
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: GEOGRAPHIC REGION > GLOBAL
Place_Keyword: VERTICAL LOCATION > MESOSPHERE
Place_Keyword: VERTICAL LOCATION > STRATOSPHERE
Temporal:
Temporal_Keyword_Thesaurus: GCMD
Temporal_Keyword: Twice Per Day; Day And Night; Orbital Repeat Cycle 16 Days
Access_Constraints: Not Available
Use_Constraints:
Users are encouraged to register with the MLS science team at https://mls.jpl.nasa.gov/forms/reguser.php to obtain updates and information about this data product.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: MLS SCIENCE TEAM
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Mail Stop 183-701, Jet Propulsion Laboratory
Address: 4800 Oak Grove Drive
City: Pasadena
State_or_Province: CA
Postal_Code: 91109-8099
Country: USA
Contact_Voice_Telephone: 818-354-6716
Contact_Electronic_Mail_Address: data@mls.jpl.nasa.gov
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
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:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 300 km at limb tagent point (along-track)
Longitude_Resolution: 3 km at limb tagent point (cross-track)
Geographic_Coordinate_Units: Decimal degrees
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: Not Available
Altitude_Resolution: 3 - 6 km
Altitude_Distance_Units: Not Available
Altitude_Encoding_Method: Implicit coordinate
Depth_System_Definition:
Depth_Datum_Name: Not Available
Depth_Resolution: 3 - 6 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_ML2HCN_V002
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: HDF-EOS5 (Swath)
Transfer_Size: 0.82 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_MLS_Leve...
Access_Instructions:
Access the data via anonymous FTP.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://mirador.gsfc.nasa.gov/cgi-bin/mirador/homep...
Access_Instructions:
Access the data through the GES-DISC Mirador fast data search and download system.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://acdisc.gsfc.nasa.gov/opendap/HDF-EOS5/Aura_...
Access_Instructions:
Access the data via the OPeNDAP protocol.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://acdisc.gsfc.nasa.gov/opendap/HDF-EOS5/Aura_...
Access_Instructions:
Access the data using the THREDDS Catalog.
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:
Reverb, the ECHO client, allows one to search and retrieve data across multiple data archive centers.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://mls.jpl.nasa.gov/
Access_Instructions:
The MLS home page at NASA JPL.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://mls.jpl.nasa.gov/data/v2_data_quality_docum...
Access_Instructions:
README document
Fees: None
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Metadata_Reference_Information:
Metadata_Date: 20060920
Metadata_Review_Date: 20141030
Metadata_Future_Review_Date: 20150601
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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