Note:
1. The volume distributed to end users per day, as a running average over the last 4 weeks, is 1.634 times the volume added to the archive per day.
ESDIS Weekly Metrics: September 2, 2024
LANCE Data Latency
Note:
Higher product latencies for:
- SMAP L-BAND RADIOMETER-SMAP on August 27-28, 2024, due to system maintenance on August 28; the higher-than-normal latencies for August 27 are being investigated
- AMSR2-GCOM-W1 on August 28, 2024, due to a delay on JAXA’s end of L1R publication and subsequently our processing for roughly ~7 hours
- OMI-AURA on August 29, 2024, due to a database problem on August 28 that delayed ingest of level 0 up to 12 hours
- OMPS-SNPP on August 29 and 31, 2024, due to a database problem on August 28 that delayed ingest of level 0 up to 12 hours and the late arrival of data from EDOS, respectively
- VIIRS-SNPP-Land on August 30, 2024, due to a delay in L0 data delivery and one L0 file that failed to ingest
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 four weeks, over 95% of NRT data requests for all instruments except for five instruments (OMI-AURA, OMPS-SNPP, SMAP L-BAND RADIOMETER-SMAP, VIIRS-NOAA-20-Land, and VIIRS-SNPP-Land) were satisfied within 3 hours. For OMI-AURA, OMPS-SNPP, SMAP L-BAND RADIOMETER-SMAP, VIIRS-NOAA-20-Land, and VIIRS-SNPP-Land, over 93%, 93%, 82%, 89%, and 78% of the NRT data requests were satisfied within 3 hours, respectively.