ESDIS Weekly Metrics: January 1, 2024

Note:
1. The volume distributed to end users per day, as a running average over the last 4 weeks, is 2.483 times the volume added to the archive per day.
2. The large ingest volume was from CSDA for the product WV03_MSI_L1B.

LANCE Data Latency

Note:
1. Higher product latencies for:

• OMPS-SNPP on December 26, 2023, due to late arriving L0 from EDOS.
• VIIRS-SNPP (Land) on December 27, 2023, was due to a processing delay.
• VIIRS-JPSS1 (Atmosphere) and VIIRS-SNPP (Atmosphere) on December 28, 2023, was due to an update issue.

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).
3. Over the last four weeks, over 95% of NRT data requests for all instruments except for two instruments (VIIRS-JPSS1 (Land) and VIIRS-SNPP (Land)) were satisfied within 3 hours. For VIIRS-JPSS1 (Land) and VIIRS-SNPP (Land), over 95% and 80% of the NRT data requests were satisfied within 3 hours, respectively.

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