WMO OSCAR | Details for Instrument CPR (Earth-CARE)

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Instrument: CPR (Earth-CARE)

Instrument details

Acronym	CPR (Earth-CARE)
Full name	Cloud Profiling Radar for Earth-CARE
Purpose	Vertical profile of cloud water (liquid and ice), vertical velocity
Short description	Frequency 94.05 GHz, bandwidth 7 MHz, Doppler capability, Sensitivity: - 35 dBZ
Background	New development
Scanning Technique	None. Along-track sampling at 1 km intervals
Resolution	Horizontal: 0.65 km (cross-track) x 1 km (along-track); vertical 400 m
Coverage / Cycle	Global coverage in 16 days for cells of 100 km side
Mass	230 kg	Power	308 W	Data Rate	822 kbps

Providing Agency	JAXA
Instrument Maturity	Backed by strong heritage
Utilization Period:	2024 to 2027
Last update:	2022-03-28

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

Earth Clouds, Aerosol and Radiation Explorer (ESA)
- EarthCARE (see instrument status) 2024 - 2027

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 base height
Cloud drop effective radius
Cloud ice
Cloud ice Total Column
Cloud ice effective radius
Cloud liquid water (CLW)
Cloud liquid water (CLW) total column
Cloud top height
Freezing level height in clouds
Melting layer depth in clouds

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	Low-density cloud only.. Along-track only.	W-band radar (around 94 GHz) for non-precipitating drops
Cloud ice effective radius*	1 - primary	Low-density cloud only.. Along-track only.	W-band radar (around 94 GHz) for non-precipitating particles
Cloud liquid water (CLW)*	1 - primary	Low-density cloud only.. Along-track only.	W-band radar (around 94 GHz) for non-precipitating drops
Cloud liquid water (CLW) total column*	1 - primary	Low-density cloud only.. Along-track only.	W-band radar (around 90 GHz) for non-precipitating drops
Freezing level height in clouds*	1 - primary	Low-density cloud only.. Along-track only.	W-band radar (around 94 GHz). Detected as "bright-band"
Melting layer depth in clouds*	1 - primary	Low-density cloud only.. Along-track only.	W-band radar (around 94 GHz). Detected as "bright-band"
Cloud base height*	3 - high	Low-density cloud only.. Along-track only.	W-band cloud radar around 94 GHz
Cloud ice*	4 - fair	Low-density cloud only.. Along-track only.	W-band radar for non-precipitating particles
Cloud ice Total Column*	4 - fair	Low-density cloud only.. Along-track only.	W-band radar (around 94 GHz) for non-precipitating particles
Accumulated precipitation	5 - marginal	Light precipitation only.. Along-track only.. Time sampling to be interpolated by GEO.	W-band radar (around 94 GHz). Sensitive to very light precipitation
Cloud top height*	5 - marginal	Dense cloud only.. Along-track only.	W-radar (around 94 GHz) for direct measurement of cloud top height
Precipitation (liquid or solid)	5 - marginal	Light precipitation only.. Along-track only.	W-band radar (around 94 GHz) for small drops or ice particles
Precipitation intensity at surface (liquid or solid)	5 - marginal	Light precipitation only.. Along-track only.	W-band radar (around 94 GHz). Sensitive to boundary between precipitating and non-precipitating convective clouds

Showing 1 to 13 of 13 entries