ESDIS Weekly Metrics: January 26, 2026

Note:

1. The volume distributed to end users per day, as a running average over the last 4 weeks, is 11.543 times the volume added to the archive per day.

LANCE Data Latency

Note:

Higher product latencies for:

• OMPS-SNPP, on January 5, 2026, due to receiving L0 data late.
• OMPS-SNPP, on January 8, 2026, due to receiving L0 data late.
• VIIRS-SNPP-Atmosphere, on January 19, 2026, is under investigation.
• VIIRS-NOAA-20-Atmosphere, on January 19, 2026, is under investigation.
• AIRS-AQUA, on January 22, 2026, due to data quality.  
• MLS-AURA, on January 22, 2026, due to system issues there was a delay.
• OMI-AURA, on January 22, 2026, due to a database issue.
• OMPS-SNPP, on January 22, 2026, due to a database issue.
• TROPOMI-SENTINEL-5P, on January 22, 2026, due to minor system issues. 

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 5 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 (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. SMAP L-BAND RADIOMETER-SMAP, TROPOMI-SENTINEL-5P, VIIRS-SNPP-Land, VIIRS-NOAA-20-Atmosphere, and VIIRS-NOAA-21-Land over 89%, 92%, 80%, 73%, and 88% of the NRT data requests were satisfied within 3 hours, respectively.

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