ESDIS Weekly Metrics: September 1, 2025

Note:

1. The volume distributed to end users per day, as a running average over the last 4 weeks, is 3.772 times the volume added to the archive per day.

LANCE Data Latency

Note:

Higher product latencies for:

• OMPS-SNPP, on August 26-27, 2025, due to receiving the L0 data late from EDOS.
• TROPOMI-SENTINEL-5P, on August 26-28, 2025, due to NSG maintenance.
• VIIRS-SNPP-Land, on August 26, 2025, due to an ancillary data delay.
• VIIRS-NOAA-20-Atmosphere, on August 26, 2025, due to receiving a corrupted L0.
• VIIRS-SNPP-Atmosphere, on August 26, 2025, due to receiving a corrupted L0.

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 7 instruments (OMPS-SNPP, SMAP L-BAND RADIOMETER-SMAP, TROPOMI-SENTINEL-5P, VIIRS-SNPP-Land, VIIRS-SNPP-Atmosphere, VIIRS-NOAA20-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-SNPP-Atmosphere, VIIRS-NOAA20-Atmosphere, and VIIRS-NOAA-21-Land over 92%, 88%, 64%, 72%, 90%, 84%, and 83% of the NRT data requests were satisfied within 3 hours, respectively.

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