ESDIS Weekly Metrics: April 7, 2025

Note:

1. The volume distributed to end users per day, as a running average over the last 4 weeks, is 2.251 times the volume added to the archive per day.

LANCE Data Latency

Note:

Higher product latencies for:

• SMAP L-BAND RADIOMETER-SMAP, on March 25 and 27, 2025, is still being looked into.
• OMPS-SNPP, March 28, 2025, due to L1 data was reprocessed due to a bug in some supporting code.
• VIIRS-SNPP-Atmosphere and VIIRS-NOAA-20-Atmosphere, March 25, 2025, due to a bug in their processing. March 28, 2025, was due to a piece of their ingest system went down briefly.
• OMPS-SNPP, April 1-2, 2025, due to receiving Level 0 data late from EDOS.
• VIIRS-SNPP-Atmosphere, April 1-2, 2025, due to delay in receiving L0 data.
• VIIRS-NOAA-20-Atmosphere, April 2, 2025, due to delay in receiving L0 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 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 5 instruments (OMPS-SNPP, SMAP L-BAND RADIOMETER-SMAP, VIIRS-SNPP-Land, VIIRS-SNPP-Atmosphere, and VIIRS-NOAA20-Atmosphere) were satisfied within 3 hours. OMPS-SNPP, SMAP L-BAND RADIOMETER-SMAP, VIIRS-SNPP-Land, VIIRS-SNPP-Atmosphere, and VIIRS-NOAA20-Atmosphere over 91%, 77%, 76%, 86%, and 92% of the NRT data requests were satisfied within 3 hours, respectively.
4. MOPITT in Safe Mode: On February 1, 2025, the Terra Measurement of Pollution in The Troposphere (MOPITT) instrument went into safe mode. While in safe mode, there will be no MOPITT science data collected. As of March 31, 2025, the MOPITT Subsetter was decommissioned.

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