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SeaWiFS Level 3 Mapped 9 KM Yearly Photosynthetically Active Radiation (PAR) Data

Entry ID: OBPG_SEAWIFS_L3_M9Y_PAR

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Summary

Abstract: This data set consists of algorithm estimates of global Photosynthetically
Active Radiation (PAR) reaching the surface obtained by the Sea-viewing Wide
Field-of-view Sensor (SeaWiFS), in orbit on the OrbView-2 (formerly SeaStar)
platform. SeaWiFS data products are processed and distributed by the Ocean
Biology Processing Group (OBPG). Processing details can be found at
...

Related URL

Link: GET DATA

Description: Access SeaWiFS Level 3 Mapped Yearly PAR Data

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 90.0

S: -90.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: D. Hall, V. Salomonson

Dataset Title: MODIS/Terra Sea Ice Extent Daily L3 Global 1km EASE-Grid Night, Version 5

Dataset Release Date: 2006-12-18

Dataset Release Place: Boulder, CO U.S.A.

Dataset Publisher: National Snow and Ice Data Center (NSIDC)

Version: 5

Online Resource: http://nsidc.org/data/mod29p1nv5.html

Temporal Coverage

Start Date: 2000-02-24

Location Keywords

GEOGRAPHIC REGION > GLOBAL OCEAN

Data Resolution

Latitude Resolution: 1 km
Longitude Resolution: 1 km
Temporal Resolution: Daily

Science Keywords

CRYOSPHERE > SEA ICE > ICE EXTENT

CRYOSPHERE > SEA ICE > ICE TEMPERATURE

OCEANS > SEA ICE > ICE EXTENT

OCEANS > SEA ICE > ICE TEMPERATURE

ISO Topic Category

IMAGERY/BASE MAPS/EARTH COVER

Platform

TERRA > Earth Observing System, TERRA (AM-1)

Instrument

MODIS > Moderate-Resolution Imaging Spectroradiometer

Spectroradiometers

Project

EOSDIS > Earth Observing System Data Information System

ESIP > Earth Science Information Partners Program

CWIC > CEOS WGISS Integrated Catalog

Quality All MODIS/Terra sea ice products are considered validated or at stage 2 meaning that accuracy has been assessed over a widely distributed set of locations and time periods via several ground-truth and validation campaigns. Quality indicators for MODIS sea ice data can be found in the following three places: * AutomaticQualityFlag and the ScienceQualityFlag metadata objects and their ... corresponding explanations: AutomaticQualityFlagExplanation and ScienceQualityFlagExplanation located in the CoreMetadata.0 global attributes * Custom local attributes associated with each SDS, for example Ice Surface Temperature * The Pixel QA SDS that accompanies each data field, for example, Ice Surface Temperature Spatial QA. These quality indicators are generated during production or in post-production scientific and quality checks of the data product. For more information on local and global attributes, go to one of the following links: * MOD29P1N Local Sea Ice Attributes, Version 5 * MOD29P1N Global Sea Ice Attributes, Version 5 The AutomaticQualityFlag is automatically set according to conditions for meeting data criteria in the sea ice algorithm. In most cases, the flag is set to either Passed or Suspect, and in rare instances, it may be set to Failed. Suspect means that a significant percentage of the data were anomalous and that further analysis should be done to determine the source of anomalies. The AutomaticQualityFlagExplanation contains a brief message explaining the reason for the setting of the AutomaticQualityFlag. The ScienceQualityFlag and the ScienceQualityFlagExplanation maybe updated after production, either after an automated QA program is run or after the data product is inspected by a qualified scientist. Content and explanation of this flag are dynamic so it should always be examined if present in the external metadata file. A sampling of products will be inspected. Random sampling or support of specific events, such as field campaigns, may also be conducted. The IST Spatial QA data field provides additional information on algorithm results for each pixel within a spatial context, and are used as a measure of usefulness for sea ice data. QA data are stored as coded integer values and tells if algorithm results were good or not, or if other defined conditions were encountered (Riggs, Hall, and Salomonson 2003). See the MODIS Land Quality Assessment Web page for further details.

Ancillary Keywords

Antarctic

Arctic

Data Set Progress

IN WORK

Data Center

NSIDC Distributed Active Archive Center

Data Center URL: http://nsidc.org/daac/index.html

Data Center Personnel
Name: NSIDC USER SERVICES Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at nsidc.org Contact Address: National Snow and Ice Data Center CIRES, 449 UCB University of Colorado City: Boulder Province or State: CO Postal Code: 80309-0449 Country: USA

National Snow and Ice Data Center

Data Center URL: http://nsidc.org

Data Center Personnel
Name: NSIDC USER SERVICES Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at nsidc.org Contact Address: National Snow and Ice Data Center CIRES, 449 UCB University of Colorado City: Boulder Province or State: CO Postal Code: 80309-0449 Country: USA

Distribution

Distribution Media: FTP

Distribution Size: 0.05 - 1.5 MB

Distribution Format: GeoTIFF

Distribution Media: FTP

Distribution Size: 0.05 - 1.5 MB

Distribution Format: HDF-EOS

Personnel

DOROTHY K. HALL

Role: INVESTIGATOR

Contact Address:

National Aeronautics and Space Administration (NASA) Goddard Space Flight Center (GSFC)

Mail stop 614.1

City: Greenbelt

Province or State: MD

Postal Code: 20771

Publications/References

Earth Science Data and Information System (ESDIS). 1996. EOS Ground System (EGS) Systems and Operations Concept. Greenbelt, MD: Goddard Space Flight Center.

Hall, Dorothy K., J. L. Foster, D. L. Verbyla, A. G. Klein, and C. S. Benson. 1998. Assessment of Snow Cover Mapping Accuracy in a Variety of Vegetation Cover Densities in Central Alaska. Remote Sensing of the Environment 66:129-137.

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Extended Metadata Properties

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Creation and Review Dates

DIF Creation Date: 2008-03-31

Last DIF Revision Date: 2012-05-13

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