NPreciSe: NOAA Satellite Precipitation Validation System

NPreciSe

NOAA Satellite Precipitation Validation System

Documentation Satellite Products
control_point GPROF control_point bRR control_point MiRS control_point SCaMPR control_point CMORPH2 control_point IMERG control_point GSMaP control_point PERSIANN control_point SFR
Reference Products Validation Methods
control_point Detection Performance control_point Quantification Performance

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Satellite Precipitation Products

Goddard PROFiling (GPROF)

Sensor Satellite Spatial Resolution Temporal Resolution Detection Threshold Data Availability
AMSR2 GCOM-W1 ~6 km Instantaneous 0.5 mm/h November 6, 2020 to Present
Validation methodology
  • Instantaneous estimates from AMSR2 are collocated with the 2-minute MRMS product within the overpass.
  • Weighted-mean of MRMS precipitation estimates over the 36-GHz channel footprint is used as the reference precipitation

blended Rain Rate (bRR)

Real time data
Spatial Resolution Temporal Resolution Detection Threshold Data Availability
~15 km gridded product Instantaneous 0.5 mm/h November 3, 2020 to Present
Validation methodology
  • BRR estimates are compared with the 2-minute MRMS product within 10-minutes of the satellite overpass.
  • MRMS reference precipitation rate is calculated by averaging the MRMS precipitation estimates within the BRR grid.

Microwave Integrated Retrieval System (MiRS)

Sensor Satellite Spatial Resolution Temporal Resolution Detection Threshold Data Availability
ATMS NOAA20 15-70 km (depending on viewing angle) Instantaneous 0.5 mm/h December 8, 2020 to Present
ATMS NOAA21 15-70 km Instantaneous 0.5 mm/h August 20, 2023 to Present
ATMS Suomi-NPP 15-70 km Instantaneous 0.5 mm/h December 12, 2020 to Present
SSMIS DMSP F17 15-70 km Instantaneous 0.5 mm/h February 9, 2022 to Present
SSMIS DMSP F18 15-70 km Instantaneous 0.5 mm/h February 9, 2022 to Present
MHS NOAA19 15-70 km Instantaneous 0.5 mm/h February 9, 2022 to Present
MHS MetOp-B 15-70 km Instantaneous 0.5 mm/h February 9, 2022 to Present
MHS MetOp-C 15-70 km Instantaneous 0.5 mm/h July 10, 2023 to Present
GMI GPM 15-70 km Instantaneous 0.5 mm/h February 9, 2022 to Present
Validation methodology
  • Instantaneous estimates from the sensor are matched with the 2-minute MRMS product within the overpass.
  • Weighted-mean of MRMS pixels within the sensor's footprint is used as the reference precipitation.

Self-Calibrating Multivariate Precipitation Retrieval (SCaMPR)

Real time data
Product Spatial Resolution Temporal Resolution Detection Threshold Data Availability
Near-Instantaneous 2 km (0.02 degrees) 10 minutes 1.0 mm/h March 1, 2021 to May 23, 2023
1-Hour 2 km (0.02 degrees) 1 hour 0.5 mm/h June 4, 2024 to Present
Validation methodology for Near-Instantaneous
  • SCaMPR estimates are matched to the nearest 2-minute MRMS product.
  • Average MRMS precipitation estimates within the SCaMPR field-of-view is considered as the reference precipitation.
Validation methodology for 1-Hour Product
  • 1-hour SCaMPR estimates are matched to the 1-hour accumulated MRMS RadarOnly and MRMS MultiSensor Products
  • Average MRMS precipitation estimates within the SCaMPR grid is considered as the reference precipitation.

NOAA CPC Morphing Technique (CMORPH2)

Note: CMORPH2 product used here is not bias corrected

Product Spatial Resolution Temporal Resolution Latency Detection Threshold Data Availability
CMORPH2-RT 0.05 degrees 30 minutes 5 hour 0.5 mm/h May 5, 2022 to Present
CMORPH2-Standard 0.25 degrees 30 minutes 36 hour 0.5 mm/h May 5, 2022 to Present
Validation methodology
  • CMORPH2 estimates are matched to the 1-hour accumulated MRMS RadarOnly and MRMS MultiSensor products.
  • Average MRMS precipitation estimates within the CMORPH2 grid is considered as the reference precipitation.

Integrated Multi-satellitE Retrievals for GPM (IMERG)

Real time data
Product Spatial Resolution Temporal Resolution Latency Detection Threshold Data Availability
IMERG-Early 0.1 degrees 30 minutes 4 hours 0.5 mm/h December 28, 2021 to Present
IMERG-Late 0.1 degrees 30 minutes 14 hours 0.5 mm/h December 28, 2021 to Present
Validation methodology
  • 30-minutes IMERG estimates are accumulated 1-hour and matched with 1-hour MRMS RadarOnly and MRMS MultiSensor products.
  • Average MRMS precipitation estimates within the IMERG grid is considered as the reference precipitation.

Global Satellite Mapping of Precipitation (GSMaP)

Product Spatial Resolution Temporal Resolution Latency Detection Threshold Data Availability
GSMaP-NRT 0.1 degrees 1 hour 4 hours 0.5 mm/h July 25, 2022 to Present
GSMaP-MVK 0.1 degrees 1 hour 72 hours 0.5 mm/h April 1, 2022 to Present
Validation methodology
  • GSMaP estimates are matched to the 1-hour accumulated MRMS RadarOnly and MRMS MultiSensor products.
  • Average MRMS precipitation estimates within the GSMaP grid is considered as the reference precipitation.

Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks (PERSIANN)

Real time data
Product Spatial Resolution Temporal Resolution Latency Detection Threshold Data Availability
PERSIANN DIR-Now 0.04 degrees 1 hour less than 1 hour 0.5 mm/h October 12, 2021 to Present
PERSIANN 0.25 degrees 1 hour 48 hours 0.5 mm/h November 14, 2021 to Present
Validation methodology
  • PERSIANN estimates are matched to the 1-hour accumulated MRMS RadarOnly and MRMS MultiSensor products.
  • Average MRMS precipitation estimates within the grid is considered as the reference precipitation.

Snowfall Rate (SFR)

Reference product: MRMS and Stage-IV.

Sensor Satellite Spatial resolution Temporal resolution Detection Threshold Data Availability
ATMS NOAA20 15-70 km (depending on viewing angle) Instantaneous 0.125 mm/h April 16, 2021 to January 21, 2024
ATMS Suomi-NPP 15-70 km Instantaneous 0.125 mm/h April 16, 2021 to January 21, 2024
SSMIS DMSP F17 15-70 km Instantaneous 0.125 mm/h January 3, 2022 to December 11, 2023
SSMIS DMSP F18 15-70 km Instantaneous 0.125 mm/h January 3, 2022 to December 11, 2023
MHS NOAA-19 15-70 km Instantaneous 0.125 mm/h January 3, 2022 to January 21, 2024
MHS MetOp-B 15-70 km Instantaneous 0.125 mm/h January 3, 2022 to January 21, 2024
MHS MetOp-C 15-70 km Instantaneous 0.125 mm/h January 3, 2022 to January 21, 2024
GMI GPM 15-70 km Instantaneous 0.125 mm/h January 3, 2022 to December 12, 2023
Validation methodology
MRMS:
  • Instantaneous estimates from ATMS are compared to the spatially-collocated, 30-min delayed, MRMS product. The 30-minute delay is added to account for the time taken by the snow to reach the surface.
  • MRMS pixels that are identified as “snow” by MRMS PrecipType are used to calculate the weighted-mean within the ATMS footprint.
STAGE-IV:
  • Stage-IV estimates that include the overpass time are chosen as the reference. If overpass time is within 15 minutes of the end of hour [minute>45], a 30-minute delay is applied to the Stage-IV product.
  • Weighted mean of the Stage-IV precipitation estimates within the ATMS footprint is used as the reference.
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