MODIS/Aqua Snow Cover 5-Min L2 Swath 500m, Version 5Entry ID: MYD10_L2V5
Abstract: The MODIS/Aqua Snow Cover 5-Min L2 Swath 500m (MYD10_L2) data set contains snow cover and Quality Assessment (QA) data, latitudes and longitudes in compressed Hierarchical Data Format-Earth Observing System (HDF-EOS) format, and corresponding metadata. Latitude and longitude geolocation fields are at 5 km resolution while all other fields are at 500 m resolution. Version 5 (V005), the latest ... version of the Moderate Resolution Imaging Spectroradiometer (MODIS) data available has two separate snow fields. The first field, snow cover, classifies each cloud-free land or inland water body pixel as snow-covered or snow-free, the second field, fractional snow cover, provides the percent of snow cover within each pixel for land and inland water bodies. MODIS snow cover data are based on a snow mapping algorithm that employs a Normalized Difference Snow Index (NDSI) and other criteria tests. Data are stored in HDF-EOS format, and are available from 4 July 2002 to present via FTP. Data can also be obtained in GeoTIFF format by ordering the data through the Data Pool.
Data Set Citation
Dataset Originator/Creator: D. Hall, V. Salomonson
Dataset Title: MODIS/Aqua Snow Cover 5-Min L2 Swath 500m, Version 5
Dataset Release Date: 2006-12-18
Dataset Release Place: Boulder, CO
Dataset Publisher: National Snow and Ice Data Center (NSIDC)
Data Presentation Form: Digital mediaOnline Resource: http://nsidc.org/data/MYD10_L2V5.html
This data set description is a member of a collection. The collection is described in
Start Date: 1990-02-16
OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
OCEANS > SALINITY/DENSITY > SALINITY
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > EUPHAUSIIDS (KRILL)
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > COPEPODS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > AMPHIPODS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > BARNACLES
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > CNIDARIANS > HYDROZOANS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ECHINODERMS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > SEGMENTED WORMS (ANNELIDS)
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > TUNICATES
BIOSPHERE > AQUATIC ECOSYSTEMS > PLANKTON > ZOOPLANKTON
Quality ATTRIBUTE ACCURACY REPORT: The animals counts were done according to convention: sorting under a stereo microscope after preservations. Environmental data were taken with unknown accuracy, but best available method used. Geographical positions taken from ship log before deploying the net.
LOGICAL CONSISTENCY REPORT: The same procedures were used at all sites and for all species; ... findings should be consistent.
COMPLETENESS REPORT: Mesh size used: 333 µm. Thickness of sampled layer: from the bottom to the top in three depth increments bottom-25 m, 25-10 m and 10 m surface.
Abundance computed for each taxa per sample as a number of specimens divided by volume of filtered water (estimated by multiplying the net mouth area by tow depth).
HORIZONTAL POSITIONAL ACCURACY REPORT: unknown accuracy, but best available method used
PROCESS DESCRIPTION: applicable since fully explained in Methodology: see above
PROCESS DESCRIPTION: Data and metadata updates for integration into GBIF/OBIS database. Full information on this process step can be found in a digital report: https://db.aoos.org/wiki/index.php/ArcOD_2006P9
PROCESS DESCRIPTION: Corrected spelling mistakes in scientificname.
PROCESS DESCRIPTION: Corrected spelling mistake to Chukchi and changed shortname
These data present a snapshot in time, but are representative for the location and depth where collected.
Identification is done where applicable and known; different taxonomies might result into different species names.
Pecularities of Russian name translations into English and for doing fieldwork in Russian waters in the mid-1950 should be considered when analyzing these data.
Access Constraints None
Use Constraints These data cannot be redistributed to third parties.
Although these data have been processed successfully on a computer system at the University of Alaska, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer ... applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from a University of Alaska server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The University of Alaska shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Data Set Progress
Distribution Format: CSV
Phone: 907 474-7842
P.O. Box 757220
Province or State: Alaska
Postal Code: 99775
Role: TECHNICAL CONTACT
Fax: +01-907 4746967
Email: fhuettmann at alaska.edu
419 Irving I, PO Box 757000
Province or State: AK
Postal Code: 99775-7000
Role: DIF AUTHOR
Email: alicia.m.aleman at nasa.gov
Goddard Space Flight Center Code 610.2
Province or State: MD
Postal Code: 20771
Graham, C. H., S. Ferrier, F. Huettmann, C. Moritz and A.T. Peterson 2004 New developments in museum-based informatics and applications in biodiversity analysis. Trends in Ecology and Evolution 19: 497-503
Creation and Review Dates
DIF Creation Date: 2005-12-06
Last DIF Revision Date: 2010-01-22