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Link to Products
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Product Description
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Nighttime Lights of the World
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NEW. The Nighttime Lights of the World dataset contains the first satellite-based global inventory of human settlements,derived from nighttime data from the Defense Meteorological SatelliteProgram (DMSP) Operational Linescan System (OLS). The DMSP-OLS has the unique capability to observe faint sourcesof visible-near infrared emissions present at the Earth's surface, including cities, towns, villages, gas flares,and fires. NGDC has developed algorithms for producing georeferenced fire and nighttime lights products. |
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DMSP Orbits
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Individual OLS orbits are available whole or subset into latitude range. On average, each satellite records 14
orbits per day. Each orbit contains both visible and thermal infrared data interleaved by line. The latitude and
longitude of the nadir pixel is recorded for each line. Each line contains 1465 pixels of data with a ground sample
distance of 2.7 km. The visible band records values of 0 - 63. The thermal infrared band records values of 0 -
255, corresponding to temperatures of 190 to 310 K.
For additional information about the DMSP satellites and sensors, please refer to information pages at dmsp.ngdc.noaa.gov |
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DMSP Mosaics
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The orbit data from DMSP satellites are geolocated into a 3 arc-minute grid (20 pixels per degree) and mosaicked
together each hour. Several mosaics are available: most recent thermal infrared from F13, F14 and F15 and a most
recent combined mosaic using data from the three satellites. Visible band mosaics are available from F14 and F15
for nighttime (ascending passes)and daytime (descending passes). Hourly mosaics for today, yesterday, and the day
before yesterday are available for browsing. Prior days have mosaics available at 6 hour intervals. For additional
information about the DMSP satellites and sensors, please refer to information pages at dmsp.ngdc.noaa.gov |
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MODIS Granules
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The NGDC MODIS LTA pilot project demonstrated the
electronic transfer, ingest and dissemination of MODIS
Level 1B data. A total of 2.8 TB of MODIS data were transferred using NGDC's Abiline (Internet 2) connection.
NGDC ingested the MODIS data, creating browse image, coverage maps, and records in a relational database while
writing the data into a full resolution data into a tape library system. NGDC developed an on-line system , SABR,
inpart to provide query, browse, and retrieval
of MODIS data from the tape library. This is a demonstartion of the prototype. |
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Film Archive
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DMSP OLS data were recorded on film prior to March 1992. These data are being "rescued" (i.e. scanned
for use digitally). Data that have been scanned are available in Mr.Sid format. Orbits have been divided into several
sections for ease of scanning. The SABR preview system will allow you to browse these important holdings by date
and retreive desired images.
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SPIDR
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The Space Physics Interactive Data Resource (SPIDR) is designed to allow a solar terrestrial physics customer
to intelligently access and manage historical space physics data for integration with environment models and space
weather forecasts. SPIDR is a distributed network of synchronous databases and 100% Java middle-ware servers accessed
via World Wide Web. By enabling easy data mirroring and eliminating the network bottlenecks associated with transcontinental
links, the distributed system architecture is a key factor for low latency in multimedia data visualization and
fast data delivery. |
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