MODIS/Aqua Level 3 Global Mapped 9 KM Monthly Calcite Data

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 Level 3 Global Mapped 9 KM Monthly Calcite Data

Description:

Abstract:

This data set consists of global ocean calcite (CLCT) data derived from the Moderate Resolution Imaging Spectroradiometer (MODIS), in orbit on the Aqua (formerly EOS PM) platform. MODIS ocean products are processed and distributed by the Ocean Biology Processing Group (OBPG). Processing details can be found at http://oceancolor.gsfc.nasa.gov/DOCS/MODISA_processing.html Coccolithophores are small marine phytoplankton which form external CaCO3 scales (diameter ~ a few m and thickness 250 to 750 nm) called coccoliths. The coccoliths can form multiple layers and eventually detach. Coccolithophores are the largest source of calcium carbonate on earth [Westbroek et al., 1985]. Dissolution of calcite depends on the depth of the calcite compensation depth. Globally, calcium carbonate is responsible for about 75% of the deposition of carbon on the sea floor having a marine origin [Groom and Holligan, 1987; Honjo, 1986; Honjo, 1990], and exceeds organic burial by a factor of seven. Thus, coccolith production is an important part of the biogenic carbon cycle. A global-scale study of their distribution is an important application for MODIS imagery. MODIS is ideal for such a study because of two unique characteristics: first its high radiometric sensitivity should, in principle, allow the detection of smaller quantities of coccoliths than CZCS; and second, the existence of the land bands on MODIS, e.g., band 3 and 4, with their high saturation radiance will enable study of very high concentrations of coccoliths that would saturate a typical ocean color instrument. The Aqua MODIS Level-3 calcite products are generated routinely for daily, 8-day, monthly, seasonal and annual time periods. Spatial resolutions of 4 and 9 km are available. The algorithm for extracting the detached coccolith concentration from surface waters is based on the semianalytic model of ocean color of Gordon et al. [1988]. Briefly, the model relates the normalized water-leaving radiance, i.e., the radiance that would exit the ocean if the sun were at the zenith and the atmosphere were removed [Gordon and Clark, 1981], to the absorption and scattering properties of the constituents of the water using radiative transfer theory. The absorption and scattering properties are then related to the constituent concentrations through statistical analysis of direct measurements. Therefore, they represent oceanic- or regional-averaged relationships. For more detailed information, see the Algorithm Theoretical Basis Document (ATBD) for MODIS Detached Coccolith Concentration http://modis.gsfc.nasa.gov/data/atbd/atbd_mod23.pdf The Aqua MODIS Level 3 Calcite (CLCT) data files are available from the FTP site at ftp://oceans.gsfc.nasa.gov/MODISA/L3SMI/

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: ANCILLARY KEYWORDS

Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY

Theme_Keyword_Thesaurus: DATA SET LANGUAGE

Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > BIOGEOCHEMICAL CYCLES

Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES

Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > FLAGELLATES > HAPTOPHYTES > COCCOLITHOPHORES

Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE > HAPTOPHYTES > COCCOLITHOPHORES

Theme_Keyword: EARTH SCIENCE > BIOSPHERE > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON

Theme_Keyword: AQUA > EARTH OBSERVING SYSTEM, AQUA

Theme_Keyword: MODIS > MODERATE-RESOLUTION IMAGING SPECTRORADIOMETER

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: Calcite

Theme_Keyword: Calcium Carbonate

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: Monthly

Temporal_Keyword: Monthly - < 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_L3_M9CLCTM

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/MODISA/L3SMI/

Access_Instructions:

Access Daily Aqua-MODIS Level 3 Calcite (CLCT) Data

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/DOCS/ http://ocean...

Access_Instructions:

Data and Processing documentation

Fees: Not Available

Metadata_Reference_Information:

Metadata_Date: 20040521

Metadata_Review_Date: 20060411

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