ESDIS Weekly Metrics: October 21, 2024

Note:

The volume distributed to end users per day, as a running average over the last 4 weeks, is 2.563 times the volume added to the archive per day.

LANCE Data Latency

Note:

• Higher product latencies for:
  • VIIRS-NOAA-20-Land on October 13, 2024, due to a glitch in the NOAA-20 data requiring manual intervention
  • VIIRS-SNPP-Land on October 14 and 17-18, 2024, due to processing delays
  • VIIRS-NOAA-20-Atmosphere on October 14 and 17, 2024, due to a delayed ancillary file upstream and a delay in a Level 0 data file, respectively
  • AIRS-AQUA on October 18, 2024, due to a delay in receiving attitude and ephemeris data

Note:

1. Latency for a data granule is defined as the time taken from the midpoint between the start and end of acquisition of the data for that granule to the granule’s being ready on-line for users to download. 
2. Duration covered by the data for a granule is defined differently for different instruments (e.g., MODIS granules are 5 minutes long while OMI NRT granules are 13 to 136 minutes long).

Over the last four weeks, over 95% of NRT data requests for all instruments except for five instruments (SMAP L-BAND RADIOMETER-SMAP, VIIRS-NOAA-20-Land, VIIRS-SNPP-Land, VIIRS-SNPP-Atmosphere, and VIIRS-NOAA-20-Atmosphere) were satisfied within 3 hours. For SMAP L-BAND RADIOMETER-SMAP, VIIRS-NOAA-20-Land, VIIRS-SNPP-Land, VIIRS-SNPP-Atmosphere, and VIIRS-NOAA-20-Atmosphere, over 80%, 85%, 79%, 84%, and 85% of the NRT data requests were satisfied within 3 hours, respectively.

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