DQRID : D020426.6
Start DateStart TimeEnd DateEnd Time
07/02/2000003504/26/20020018
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Subject:
SGP/TSI/C1 - sampling rate change
DataStreams:sgptsiskycoverC1.a1, sgptsiskycoverC1.b1
Description:
SGP TSI-880 sampling rate changed from 20-second to
30-second at 20020426.001900 UTC (20020425.1819 SGP
CF local time) per ECR-00226 and BCR-00491.

This change brings all ARM TSIs to the same operational
sampling rate.  Daily SGP TSI data volume will decrease
by about 1/3 due to this change.
Suggestions: 
Measurements:sgptsiskycoverC1.a1:
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: number below horizon in image(count.sub.horz)
  • lon(lon)
  • base time in epoch(base_time)
  • Sunshine meter(sunny)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Pixel count: box, outside mirror area(count.box)
  • Percent opaque cloud(percent.opaque)
  • North Latitude(lat)
  • Pixel count: camera and sun strip mask(count.mask)
  • Pixel count: number total opaque(count.opaque)
  • -180.0 - +180.0(alt)
  • Sun altitude above horizon(solar.altitude)
  • Percentage thin cloud(percent.thin)
  • Time offset from base_time(time_offset)
  • Pixel count: number total in sun circle(region.sun.count)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number total indeterminant(count.unknown)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Solar azimuth angle(solar.azimuth)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: number total thin(count.thin)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
more
sgptsiskycoverC1.b1:
  • Time offset from base_time(time_offset)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Pixel count: number total in zenith circle(region.zenith.count)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Sunshine meter(sunny)
  • Pixel count: number total indeterminant(count.unknown)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: camera and sun strip mask(count.mask)
  • lon(lon)
  • Pixel count: number total in sun circle(region.sun.count)
  • Percentage thin cloud(percent.thin)
  • Pixel count: number below horizon in image(count.sub.horz)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • North Latitude(lat)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Solar azimuth angle(solar.azimuth)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • -180.0 - +180.0(alt)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Pixel count: number total in processed circle(count.sky)
  • base time in epoch(base_time)
  • Sun altitude above horizon(solar.altitude)
  • Pixel count: number total thin(count.thin)
  • Percent opaque cloud(percent.opaque)
more

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