TOMS/EP Total Column Ozone Daily and Monthly Zonal Means

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: TOMS Science Team

Publication_Date: Unknown

Title: TOMS/EP Total Column Ozone Daily and Monthly Zonal Means

Edition: 008

Geospatial_Data_Presentation_Form:

Series_Information:

Series_Name: TOMS Data

Issue_Identification:

Publication_Information:

Publication_Place: Greenbelt, MD

Publisher: NASA Goddard Space Flight Center

Other_Citation_Details:

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

Description:

Abstract:

This data product contains TOMS/EP Total Column Ozone Daily and Monthly Zonal Means Version 8 data in ASCII format. The Total Ozone Mapping Spectrometer (TOMS) Version 8 daily and monthly global gridded data consist of total column ozone, aerosol index, Lambertian effective surface reflectivity (Rayleigh corrected) and surface UV-B erythemal irradiances. Four TOMS instruments have been successfully flown on the following satellites: Nimbus-7 (Nov. 1978 - May 1993), Meteor-3 (Aug. 1991 - Dec. 1994), Earth Probe (July 1996 - current), and ADEOS (Sep. 1996 - June 1997). Earth Probe, Meteor-3 and Nimbus-7 data are currently reprocessed using the Version-8 algorithm (http://toms.gsfc.nasa.gov/version8/v8toms_atbd.pdf) . These Version-8 data are archived at the Goddard Distributed Active Archive Center (DAAC). The total ozone, aerosol index, reflectivity data and UV-B Erythemal irradiances are mapped to a global grid of size 180 x 288 with a Lat/Lon resolution of 1.00 x 1.25 degrees. These data are also stored in the EOS version of Hierarchical Data Format (HDF-EOS). HDF was developed by the National Center for Supercomputer Applications (NCSA) at the University of Illinois at Urbana-Champaign. The GES DISC DAAC maintains an online Web-based system (Giovanni) for previewing the data, subsetting in ASCII format and downloading the data and images. The URL for Giovanni is http://giovanni.gsfc.nasa.gov/ The Level-2 data at instrument resolution(approx 50km x 50km pixel at nadir, in HDF5 EOS format) are also available from the GES DISC. For more information regarding TOMS or other DAAC data sets please visit the DAAC Home Page at http://disc.sci.gsfc.nasa.gov/acdisc/ , or contact the DAAC Help Desk at: GSFC DAAC Help Desk NASA Goddard Space Flight Center Code 610.2 Greenbelt, MD 20771 gsfc-help-disc@lists.nasa.gov TOMS data are produced by the Laboratory for Atmospheres at NASA Goddard Space Flight Center (Code 613). The Version-8 Algorithm Theoretical Basis Document (ATBD) is available from the TOMS site http://toms.gsfc.nasa.gov/version8/v8toms_atbd.pdf For detailed information about the TOMS instrument, data, and ozone see the TOMS official Home Page at: http://toms.gsfc.nasa.gov/

Purpose:

Not Available

Supplemental_Information:

REFERENCE: Eck, T. F., Bhartia, P. K., Kerr, J. B., Satellite estimation of spectral UVB irradiance using TOMS derived total ozone and UV reflectivity, Geophy. Res. Letters 1995, 22, 611-614 Herman, J.R., et al., "Meteor-3 Total Ozone Mapping Spectrometer (TOMS) Data Products User's Guide." NASA reference publication 1393, 1996. McPeters, R.D., et al., "Earth-Probe Total Ozone Mapping Spectrometer (TOMS) Data Products User's Guide." NASA Reference Publication 206895, April 1998. ftp://toms.gsfc.nasa.gov/pub/eptoms/EARTHPROBE_USERGUIDE.PDF McPeters, R.D., et al., "Nimbus-7 Total Ozone Mapping Spectrometer (TOMS) Data Products User's Guide." NASA Reference Publication 1384, April 1996. Krueger, A., M. Schoeberl, P.Newman, and R.Stolarski, June 1992. "The 1991 Antarctic Ozone Hole; TOMS Observations", Geophys. Res. Letters, 19: 1215-1218. Schoeberl, M.R., A.J. Krueger, and P.A. Newman, 1986. 'The Morphology of Antarctic Total Ozone As Seen by TOMS,' Geophys. Res. Letters, 13:1217-1220.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19960722

Ending_Date: 20051231

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: 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 > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > TRACE GASES/TRACE SPECIES

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > REFLECTANCE > REFLECTIVITY

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > OXYGEN COMPOUNDS > OZONE > TOTAL OZONE

Theme_Keyword: EP-TOMS > EARTH PROBE-TOMS

Theme_Keyword: SPECTROMETERS

Theme_Keyword: TOMS > TOTAL OZONE MAPPING SPECTROMETER

Theme_Keyword: EOSDIS > EARTH OBSERVING SYSTEM DATA INFORMATION SYSTEM

Theme_Keyword: ESIP > EARTH SCIENCE INFORMATION PARTNERS PROGRAM

Theme_Keyword: TOMS-EP > TOTAL OZONE MAPPING SPECTROMETER-EARTH PROBE

Theme_Keyword: CWIC > CEOS WGISS INTEGRATED CATALOG

Theme_Keyword: Climatology

Theme_Keyword: Daily And Monthly Data

Theme_Keyword: Eosdis

Theme_Keyword: Ftp

Theme_Keyword: Grid Data

Theme_Keyword: Statistics

Theme_Keyword: Total Column Ozone

Theme_Keyword: Aerosol Index

Theme_Keyword: Uv Effective Surface Reflectivity

Theme_Keyword: Uv-b Erythemal Irradiance

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 And Monthly

Access_Constraints: Not Available

Use_Constraints:

EP TOMS started experiencing calibration problem since 2002. Because of the continuing changes in the optical properties of the front scan mirror that are not well understood, data started showing a latitude dependent error that cannot be corrected by a simple calibration correction. The calibration appears to be stable near the equator. But by 50 degrees latitude, there is now a -2% to -4% error in TOMS, a bit larger in the northern hemisphere than in the southern hemisphere. Earth Probe TOMS data since 2002 should NOT be used for trend analysis because of the calibration problem.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: SURAIYA P. AHMAD, PH. D

Contact_Position: TECHNICAL CONTACT

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: 301-614-5284

Contact_Electronic_Mail_Address: Suraiya.Ahmad@nasa.gov

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

WARNING: EP TOMS started experiencing calibration problem since 2002. For data beginning in year 2000, the calibration has been stabilized relative to NOAA-16 SBUV/2 in the equatorial zone. Because of continuing changes in the optical properties of the front scan mirror that are not well understood, data are showing a latitude dependent error that cannot be corrected by a simple calibration correction. The calibration appears to be stable near the equator. But by 50 degrees latitude, there is now a -2% to -4% error in TOMS, a bit larger in the northern hemisphere than in the southern hemisphere. Because of this error, data since 2002 should NOT be used for trend analysis

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: 1.0 Degrees

Longitude_Resolution: 1.25 Degrees

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

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NASA/GSFC/SED/ESD/GCDC/GESDISC/ACDISC > Atmospheric Composition Data Center, Goddard Earth Sciences Data and Information Services Center, Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

Contact_Person: ACDISC USER SUPPORT OFFICE

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: TOMS LEVEL 3 DAILY AND MONTHLY ZONAL MEANS DATA

Distribution_Liability:

Not Available

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: HDF

Transfer_Size: 0.2 Mbytes

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

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

Access_Instructions:

DATA CENTER URL

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

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

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://acdisc.gsfc.nasa.gov/opendap/EarthProbe_TOM...

Access_Instructions:

OPeNDAP Access Earth Probe TOMS data from the GES DISC.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://mirador.gsfc.nasa.gov/cgi-bin/mirador/colle...

Access_Instructions:

Get TOMS data from the GES DISC Mirador

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://gdata1.sci.gsfc.nasa.gov/daac-bin/G3/gui.cg...

Access_Instructions:

Visualize and Analyze TOMS data and download the data and images

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://toms.gsfc.nasa.gov/eptoms/ep_v8.html

Access_Instructions:

Information and access to TOMS data from the TOMS home page

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20110223

Metadata_Review_Date: 20111219

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