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MRMS high temporal resolution dataset(s) #533

@aldenks

Description

@aldenks

Add MRMS datasets with ~2-minute time step. Likely two datasets, one for each variables at 0.01 and 0.005 degree resolution.

Running list of variables

Quality Control & Diagnostics (0.01°)

  • RadarQualityIndex
  • ReflectivityQC

Hydrology & Precipitation (0.01°)

  • PrecipRate
  • RadarOnly_QPE_01H
  • PrecipFlag
  • FLASH_Ratio_FFG_MAX

Severe Weather (0.01°)

  • MESH
  • NLDN_CG_005min_AvgDensity
  • NLDN_CG_030min_AvgDensity

Severe Weather: Tornado & Wind (0.005°)

  • RotationTrack30min
  • RotationTrackML30min
  • RotationTrack60min
  • RotationTrackML60min
  • AzShear_0-2km
  • AzShear_3-6km

Implementation

Most likely as a virtual icechunk dataset (#513) using a Gzip -> Gribberish decode pipeline pointing to underlying NODD MRMS files on S3.

Open questions

  1. The AzShear variables have irregular timestamps. They are on average 2-minutely, but actually have +/- a handfull of seconds in their timestamps. Do we snap these to a regular 2 minute grid or do we put them in their own dataset each? If we do snap them, we could provide a coordinate array along the time dimension with the exact issuance timestamp.

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