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This data has achieved Bronze level on 22 October 2015 which means this data makes a great start at the basics of publishing open data.

DMSP OLS - Operational Linescan System

Summary

Type of release
ongoing release of a series of related datasets

Data Licence
Not Applicable

Content Licence
Creative Commons CCZero

Verification
automatically awarded

Release Date
26 September 2015
Modified Date
26 September 2015
Update Frequency
daily
Publishers
National Oceanic and Atmospheric Administration, Department of Commerce
Identifier
dmsp-ols-operational-linescan-system
Landing Page
http://catalog.data.gov/dataset/dmsp-ols-operational-linescan-system
Temporal Coverage
1 April 1975

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Description

Visible and infrared imagery from DMSP Operational Linescan System (OLS) instruments are used to monitor the global distribution of clouds and cloud top temperatures twice each day. The archive data set consists of low resolution global and high resolution regional, imagery recorded along a 3,000 km scan, satellite ephemeris and solar and lunar information. Infrared pixel values correspond to a temperature range of 190 to 310 Kelvins in 256 equally spaced steps. Onboard calibration is performed during each scan. Visible pixels are relative values ranging from 0 to 63 rather than absolute values in Watts per m^2. Instrumental gain levels are adjusted to maintain constant cloud reference values under varying conditions of solar and lunar illumination. Telescope pixel values are replaced by Photo Multiplier Tube (PMT) values at night. A telescope pixel is 0.55 km at high resolution (fine mode) and 2.7 km at low resolution(smooth mode). Low resolution values are the mean of the appropriate 25 high resolution values.


General Information


Legal Information

This dataset has been created by US Government which means it is required to be in the public domain. However US copyright law only allows open access by US citizens, we have assumed the data is equivalently licensed as CC0 for the rest of the world as this is in the spirit of the US Government’s Open Data policy.
  • The rights statement is at

    http://catalog.data.gov/dataset/dmsp-ols-operational-linescan-system Do you think this data is incorrect? Let us know

  • Outside the US, this data is available under

    Creative Commons CCZero Do you think this data is incorrect? Let us know

  • There are

    yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know

  • The content is available under

    Creative Commons CCZero Do you think this data is incorrect? Let us know

  • This data contains

    no data about individuals Do you think this data is incorrect? Let us know


Practical Information

  • The data appears in this collection

    http://catalog.data.gov/organization/noaa-gov Do you think this data is incorrect? Let us know

  • This data changes

    at least daily Do you think this data is incorrect? Let us know

  • The data is

    backed up offsite Do you think this data is incorrect? Let us know


Technical Information


Social Information

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  • Find out how to contact someone about this data at

    http://catalog.data.gov/dataset/dmsp-ols-operational-linescan-system Do you think this data is incorrect? Let us know

  • Find out how to suggest improvements to publication at

    http://www.data.gov/issue/?media_url=http://catalog.data.gov/dataset/dmsp-ols-operational-linescan-system Do you think this data is incorrect? Let us know