WMO OSCAR | Details for Instrument DPR

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Instrument: DPR

Instrument details

Acronym	DPR
Full name	Dual-frequency Precipitation Radar
Purpose	Vertical profile of precipitation
Short description	Dual-frequency imaging radar, frequencies 13.6 GHz and 35.55 GHz, sensitivity 0.5 mm/h at 13.6 GHz, 0.2 mm/h at 35.55 GHz
Background	Evolution of PR on TRMM
Scanning Technique	Electronic scanning, planar array of 148 elements, swath 245 km at 13.6 GHz, 125 km at 35.55 GHz
Resolution	Horizontal 5.0 km, vertical 250 m (blind to the lowest ~ 150 m)
Coverage / Cycle	Nearly-global in 5 days, high-latitudes (> 65°) not covered
Mass	780 kg	Power	710 W	Data Rate	190 kbps

Providing Agency	JAXA
Instrument Maturity	Backed by strong heritage
Utilization Period:	2014 to 2030
Last update:	2021-06-15

Detailed characteristics

Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Global Precipitation Measurement mission (NASA)
- GPM Core Observatory (see instrument status) May 2014 - 2030

Instrument classification

Earth observation instrument
Active and radio-occultation sensor
Cloud and precipitation radar

WIGOS Subcomponents

Subcomponent 1
Precipitation radars and cloud radars
Precipitation radar and cloud radar

Mission objectives

Primary mission objectives

Cloud drop effective radius
Cloud ice
Cloud ice Total Column
Cloud ice effective radius
Cloud liquid water (CLW)
Cloud liquid water (CLW) total column
Freezing level height in clouds
Melting layer depth in clouds
Precipitation (liquid or solid)
Precipitation intensity at surface (liquid or solid)

Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
Note: * Primary mission objective.

Search:

Variable	Relevance for measuring this variable	Operational limitations	Explanation
Cloud drop effective radius*	1 - primary	No specific limitation.	Ku-band (around 13 GHz) and Ka-band (around 35 GHz) radar for large and small drops
Cloud ice effective radius*	1 - primary	No specific limitation.	Ku-band (around 13 GHz) and Ka-band (around 35 GHz) radar for large and small particles
Cloud liquid water (CLW)*	1 - primary	No specific limitation.	Ku-band (around 13 GHz) and Ka-band (around 35 GHz) radar for large and small drops
Cloud liquid water (CLW) total column*	1 - primary	No specific limitation.	Ku-band (around 13 GHz) and Ka-band (around 35 GHz) radar for large and small drops
Freezing level height in clouds*	1 - primary	No specific limitation.	Ku-band (around 13 GHz) and Ka-band (around 35 GHz) radar. Detected as "bright-band"
Melting layer depth in clouds*	1 - primary	No specific limitation.	Ku-band (around 13 GHz) and Ka-band (around 35 GHz) radar. Detected as "bright-band"
Precipitation (liquid or solid)*	1 - primary	No specific limitation.	Ku-band (around 13 GHz) and Ka-band (around 35 GHz) radar for medium and large drops and ice particles
Precipitation intensity at surface (liquid or solid)*	1 - primary	No specific limitation.	Ku-band (around 13 GHz) and Ka-band (around 35 GHz) radar. Sensitive to both heavy and light, liquid and solid precipitation
Accumulated precipitation	4 - fair	Poor time sampling.. Time sampling to be interpolated by GEO.	Ku-band (around 13 GHz) and Ka-band (around 35 GHz) radar. Sensitive to both liquid and solid precipitation
Cloud ice*	4 - fair	No specific limitation.	Ku- and Ka-band radar for large and small particles
Cloud ice Total Column*	4 - fair	No specific limitation.	Ku-band (around 13 GHz) and Ka-band (around 35 GHz) radar for large and small particles

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