MODIS/Aqua and SeaWiFS Level 3 9KM Yearly Merged Chlorophyll Product

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: Unknown

Publication_Date: Unknown

Title: MODIS/Aqua and SeaWiFS Level 3 9KM Yearly Merged Chlorophyll Product

Description:

Abstract:

This data set consists of merged satellite measurements of global ocean chlorophyll data derived from the Moderate Resolution Imaging Spectroradiometer (MODIS), in orbit on the Aqua (formerly EOS PM) platform, and the Sea-viewing Wide Field-of-view Sensor (SeaWIFS), in orbit on the OrbView-2 (formerly SeaStar) platform. Aqua MODIS and SeaWiFS products are processed and distributed by the Ocean Biology Processing Group (OBPG). MODIS/Aqua processing details can be found at http://oceancolor.gsfc.nasa.gov/DOCS/MODISA_processing.html . SeaWiFS processing details can be found at http://oceancolor.gsfc.nasa.gov/DOCS/SW_proc.html . The Aqua MODIS and SeaWiFS Level-3 9 km merged chlorophyll products are generated routinely for daily, 8-day, monthly, seasonal and annual time periods once the refined products for each of the contributing missions are processed. Increased coverage over the single mission product is realized through the merging of the two data sets. There is a substantial improvement (> 50%) in coverage at the daily level, decreasing with the increase in the temporal period binned. The MODIS/SeaWiFS merged product is generated in essentially two steps. First, the MODIS Level-3 file is reduced in resolution from 4 to 9 km to match the global resolution of the SeaWiFS chlorophyll product. This involves combining the sum and sum squared field values for the (typically) four 4 km bins into the corresponding single 9 km bin. In the second step, the reduced-resolution MODIS file and the corresponding SeaWiFS Level-3 file are combined. Because both input files are at the same 9 km resolution, the summing is performed bin-by-bin. The Standard Mapped Image file that is generated from the merged Level-3 binned file stores scaled 16 bit integer values rather than the usual 8 bit values, giving the user much greater numerical precision. The actual images displayed on the Ocean Color website in PNG format are provided for visual inspection only. Browse Level 3 Standard Mapped Images (SMI) at http://oceancolor.gsfc.nasa.gov/cgi/level3.pl The Aqua MODIS and SeaWiFS Level 3 Merged Chlorophyll data files are available from the FTP site at ftp://oceans.gsfc.nasa.gov/Merged/

Purpose:

Not Available

Supplemental_Information:

Not Available

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20020704

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: 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: ISO TOPIC CATEGORY

Theme_Keyword_Thesaurus: DATA SET LANGUAGE

Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PIGMENTS

Theme_Keyword: SEASTAR > ORBITAL SCIENCES CORPORATION ORBVIEW-2 SATELLITE

Theme_Keyword: AQUA > EARTH OBSERVING SYSTEM, AQUA

Theme_Keyword: MODIS > MODERATE-RESOLUTION IMAGING SPECTRORADIOMETER

Theme_Keyword: SEAWIFS > SEA-VIEWING WIDE FIELD-OF-VIEW SENSOR

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: BIOTA

Theme_Keyword: OCEANS

Theme_Keyword: ENGLISH

Place:

Place_Keyword_Thesaurus: GCMD

Place_Keyword: OCEAN > ARCTIC OCEAN

Place_Keyword: OCEAN > ATLANTIC OCEAN

Place_Keyword: OCEAN > INDIAN OCEAN

Place_Keyword: OCEAN > SOUTHERN OCEAN

Place_Keyword: OCEAN > PACIFIC OCEAN

Place_Keyword: GEOGRAPHIC REGION > GLOBAL OCEAN

Place_Keyword: GEOGRAPHIC REGION > POLAR

Temporal:

Temporal_Keyword_Thesaurus: GCMD

Temporal_Keyword: Yearly

Temporal_Keyword: Annual

Access_Constraints: None

Use_Constraints:

Publications of research results utilizing these data must acknowledge the Ocean Biology Processing Group (OBPG) at the NASA Goddard Space Flight Center, Greenbelt, MD, USA.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: GENE CARL FELDMAN

Contact_Position: TECHNICAL CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Data System Manager

Address: NASA/Goddard Space Flight Center

Address: Mailstop 614.8

City: Greenbelt

State_or_Province: MD

Postal_Code: 20771

Country: USA

Contact_Voice_Telephone: (301) 286-9428

Contact_Facsimile_Telephone: (301) 286-0268

Contact_Electronic_Mail_Address: gene.c.feldman@nasa.gov

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

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 9 km

Longitude_Resolution: 9 km

Geographic_Coordinate_Units: Decimal degrees

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: NASA/GSFC/SED/ESD/GCDC/OBPG > Ocean Biology Processing Group (OBPG), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA

Contact_Person: GENE CARL FELDMAN

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Data System Manager

Address: NASA/Goddard Space Flight Center

Address: Mailstop 614.8

City: Greenbelt

State_or_Province: MD

Postal_Code: 20771

Country: USA

Contact_Voice_Telephone: (301) 286-9428

Contact_Facsimile_Telephone: (301) 286-0268

Contact_Electronic_Mail_Address: gene.c.feldman@nasa.gov

Resource_Description: OBPG_MODIS_AQUA_SEAWIFS_L3_MYC

Distribution_Liability:

Not Available

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: HDF

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://oceancolor.gsfc.nasa.gov/

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

ftp://oceans.gsfc.nasa.gov/Merged/Annual/

Access_Instructions:

Access Yearly Merged MODIS-Aqua/SeaWiFS Level 3 Chlorophyll_a Data

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://oceancolor.gsfc.nasa.gov/cgi/level3.pl

Access_Instructions:

Browse Level 3 Standard Mapped Images

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://gcmd.nasa.gov/getserf.htm?SeaDAS

Access_Instructions:

SeaWiFS Data Analysis System (SeaDAS) for processing, display, analysis, and quality control of ocean products.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://modis.gsfc.nasa.gov/

Access_Instructions:

MODIS WEB

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://oceancolor.gsfc.nasa.gov/SeaWiFS/

Access_Instructions:

SeaWIFS Project

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://oceancolor.gsfc.nasa.gov/DOCS/ http://ocean...

Access_Instructions:

Data and Processing documentation

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://oceancolor.gsfc.nasa.gov/forum/oceancolor/t...

Access_Instructions:

Ocean Color Forum

Fees: Not Available

Metadata_Reference_Information:

Metadata_Date: 20040521

Metadata_Review_Date: 20080520

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: MELANIE F. MEAUX

Contact_Position: DIF AUTHOR

Contact_Address:

Address_Type: Mailing and Physical Address

Contact_Electronic_Mail_Address: gsfc-gcmduso@mail.nasa.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time