ESDIS Weekly Metrics: November 17, 2025

Note:

1. The volume distributed to end users per day, as a running average over the last 4 weeks, is 5.224 times the volume added to the archive per day.

LANCE Data Latency

Note:

Higher product latencies for:

• VIIRS-NOAA-20-Land, on November 9, 2025, was due to the primary L0 data server going down.
• VIIRS-SNPP-Land, on November 9 and 12, 2025, was due to was due to the primary L0 data server going down and not receiving science data, respectively.
• VIIRS-SNPP-Atmosphere, on November 14, 2025, is under investigation.
• VIIRS-NOAA-20-Atmosphere, on November 14, 2025, is under investigation.

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 online 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).
3. Over the last 4 weeks, over 95% of NRT data requests for all instruments except for 6 instruments (OMPS-SNPP, SMAP L-BAND RADIOMETER-SMAP, TROPOMI-SENTINEL-5P, VIIRS-SNPP-Land, VIIRS-NOAA-20-Atmosphere, and VIIRS-NOAA-21-Land) were satisfied within 3 hours. OMPS-SNPP, SMAP L-BAND RADIOMETER-SMAP, TROPOMI-SENTINEL-5P, VIIRS-SNPP-Land, VIIRS-NOAA-20-Atmosphere, and VIIRS-NOAA-21-Land over 88%, 87%, 93%, 78%, 75% and 85% of the NRT data requests were satisfied within 3 hours, respectively.

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