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

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: MODIS/Aqua Level 3 Global Mapped 9 KM Daily 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: Daily
Temporal_Keyword: Daily - < Weekly
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
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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: 9 km
Longitude_Resolution: 9 km
Geographic_Coordinate_Units: Decimal degrees
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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_M9CLCTD
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
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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
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