WMO OSCAR | Details for Instrument AOS Doppler Radar

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Instrument: AOS Doppler Radar

Instrument details

Acronym	AOS Doppler Radar
Full name	AOS Doppler Radar
Purpose	Precipitation profiling and mapping with nadir doppler information for convective dynamics
Short description	Ku-band (13.6 GHz) Doppler radar.
Background	New development
Scanning Technique	255 km swath
Resolution	500 m vertical, 5 km horizontal
Coverage / Cycle	Global coverage in 5.5 days
Mass		Power	Data Rate

Providing Agency	JAXA
Instrument Maturity	Flown on an R&D satellite
Utilization Period:	TBD
Last update:	2023-10-31

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

Atmosphere Observing System - Precipitation Measuring Mission (CSA)
- AOS-PMM (see instrument status) TBD - TBD

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

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.

Variable	Relevance for measuring this variable	Operational limitations	Explanation
Accumulated precipitation	4 - fair	Liquid precipitation dominant.. Poor time sampling.. Time sampling to be interpolated by GEO.	Ku-band radar (around 13 GHz). Sensitive to liquid precipitation
Cloud drop effective radius	1 - primary	No specific limitation.	Ku-band radar (around 13 GHz) for large drops
Cloud ice	4 - fair	No specific limitation.	Ku-band radar for large particles
Cloud ice Total Column	4 - fair	No specific limitation.	Ku-band radar (around 13 GHz) for large particles
Cloud ice effective radius	1 - primary	No specific limitation.	Ku-band radar (around 13 GHz) for large particles
Cloud liquid water (CLW)	1 - primary	No specific limitation.	Ku-band radar (around 13 GHz) for large drops
Cloud liquid water (CLW) total column	1 - primary	No specific limitation.	Ku-band radar for large drops
Freezing level height in clouds	1 - primary	No specific limitation.	Ku-band radar (around 13 GHz). Detected as "bright-band"
Melting layer depth in clouds	1 - primary	No specific limitation.	Ku-band radar (around 13 GHz). Detected as "bright-band"
Precipitation (liquid or solid)*	3 - high	Liquid precipitation dominant.	Ku-band radar (around 13 GHz) for large drops
Precipitation intensity at surface (liquid or solid)*	2 - very high	Liquid precipitation dominant.	Ku-band radar (around 13 GHz). Sensitive to heavy precipitation