Sargassum density and coverage using Moderate Resolution Imaging Spectroradiometer (MODIS) satellite data from 2001-01-01 to 2018-12-31 (NCEI Accession 0190272)
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title: Sargassum density and coverage using Moderate Resolution Imaging Spectroradiometer (MODIS) satellite data from 2001-01-01 to 2018-12-31 (NCEI Accession 0190272)
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abstract: This dataset includes the monthly mean Sargassum density/coverage derived from MODIS measurements. The data are stored in netcdf, GeoTIFF, or ascii format. The coverage data range from 2001 to 2018 and the density data range from 2001 to 2010. The location covers from 20°S to 50°N and 98°W to 15°E. The data resolution is 0.5° by 0.5°.
purpose: This dataset is available to the public for a wide variety of uses including scientific research and analysis.
credit: Related Funding Agency: National Oceanic and Atmospheric Administration
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beginPosition: 2001-01-01
endPosition: 2018-12-31
supplementalInformation: Submission Package ID: GB74EX In this accession, NCEI has archived multiple versions of these data. The latest (and best) version of these data has the largest version number.
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description: Parameter or Variable: Sargassum density (calculated); Units: kg/m^2; Observation Category: satellite; Sampling Instrument: MODIS.
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description: Parameter or Variable: Sargassum mean coverage (calculated); Units: km^2; Observation Category: satellite; Sampling Instrument: MODIS; Sampling and Analyzing Method: Total Sargassum coverage in the Caribbean Sea and Central Atlantic Ocean from 2000 to 2018.
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code: MODIS
type: MODIS
description: Moderate Resolution Imaging Spectroradiometer MODIS (or Moderate Resolution Imaging Spectroradiometer) is a key instrument aboard the Terra (EOS AM) and Aqua (EOS PM) satellites. Terra's orbit around the Earth is timed so that it passes from north to south across the equator in the morning, while Aqua passes south to north over the equator in the afternoon. Terra MODIS and Aqua MODIS are viewing the entire Earth's surface every 1 to 2 days, acquiring data in 36 spectral bands, or groups of wavelengths (see MODIS Technical Specifications). MODIS Technical Specifications Orbit: 705 km, 10:30 a.m. descending node (Terra) or 1:30 p.m. ascending node (Aqua), sun-synchronous, near-polar, circular Scan Rate: 20.3 rpm, cross track Swath Dimensions: 2330 km (cross track) by 10 km (along track at nadir) Telescope: 17.78 cm diam. off-axis, afocal (collimated), with intermediate field stop Size: 1.0 x 1.6 x 1.0 m Weight: 228.7 kg Power: 162.5 W (single orbit average) Data Rate: 10.6 Mbps (peak daytime); 6.1 Mbps (orbital average) Quantization: 12 bits Spatial Resolution: 250 m (bands 1-2); 500 m (bands 3-7); 1000 m (bands 8-36) Design Life: 6 years (From: http://modis.gsfc.nasa.gov/about/index.html)
