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NOAA NSSL MRMS Base and Merged Reflectivity DPQC



A 2D mosaic of non-quality controlled base reflectivity observations and a 3D merge of reflectivity across the CONUS data are contained in this dataset from the ICICLE (In-Cloud ICing and Large-drop Experiment) domain in tarred and gzipped NetCDF format. Spatial resolution: 0.01º Latitude (~1.11 km) x 0.01º Longitude (~1.01 km at 25ºN and 0.73 km at 49ºN). Data is sorted from top to bottom and east to west. The upper left corner is at 55ºN and -130ºW. Vertical resolution is 23 staggered layers from 0.5 to 10 km ASL. The file naming format is "ICICLE_[Merged|Base]Ref_DPQC_yy-xx_20190205-20190307_netCDF.tar.gz" where yy-xx is the vertical resolution. This experimental product is the first iteration and may contain some artifacts/oddities. The domain covers only the area of the ICICLE field campaign. No MRMS data are available prior to 5 February due to the federal government shutdown in early 2019.

Any public presentations/publications using this data must include NSSL as co-author.

Archive note

NOTE: This is a large dataset. Order limitations are 32GB per order, so please check file sizes when ordering.  

IMPORTANT: For each order, unzip and untar the files in a separate directory with sufficient size (1-2TB) to ensure that files are not overwritten. Some of these files may untar/unzip to hundreds of Gigabytes.  

Data access

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Additional information

Data Quality final
  • 1.0 (2021-11-15)
  • 2.0 (2023-05-05):

    Corrected tar files were generated.

(Only the current version of the data is available to order. If you have questions about a prior version, please email us.)
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Related projects
Frequency continuous
Language English
GCMD Science Keywords Expand keywords
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Related links

Temporal coverage

Begin datetime 2019-02-05 00:00:00
End datetime 2019-03-07 23:59:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 55.00, Minimum (South) Latitude: 20.00
Minimum (West) Longitude: -130.00, Maximum (East) Longitude: -60.00

Primary point of contact information

Heather Reeves <>

Additional contact information


Reeves, H. 2023. NOAA NSSL MRMS Base and Merged Reflectivity DPQC. Version 2.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 21 Jul 2024.

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