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Instrument: Delta-2D
Instrument details
Acronym
Delta-2D
Full name
Scanning Microwave Radiometer
Purpose
All-weather sea-surface temperature, sea ice, surface soil moisture, precipitable water
Short description
4-frequency / 8-channel MW radiometer, dual polarisation at each frequency
Background
Flown on the last satellite of the Okean series
Scanning Technique
Conical, 40° off-nadir, swath 1130 km
Resolution
Ranging with frequency from 20 to 100 km, consistently with an antenna diameter of 70 cm
Coverage / Cycle
Global in 1.5 days
Mass
Power
Data Rate
Providing Agency
Roscosmos
Instrument Maturity
Flown on operational programme
Utilization Period:
1999 to 2000-09-15
Last update:
2012-09-03
Detailed characteristics
Central frequency
Bandwidth
Polarisations
NEΔT
IFOV
Pixel
6.9 GHz
…. MHz
V, H
0.1 K
91x120 km
40x60 km
13.0 GHz
…. MHz
V, H
0.1 K
49x65 km
20x20 km
22.3 GHz
.... MHz
V, H
0.15 K
28x37 km
10x10 km
37.5 GHz
.... MHz
V, H
0.15 K
17x21 km
10x10 km
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
Instrument classification
Earth observation instrument Passive microwave radiometer Conical scanning microwave radiometer
WIGOS Subcomponents
No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives Sea surface temperature Wind speed (near surface)
Secondary mission objectives Integrated Water Vapour (IWV) Land surface temperature Snow cover Snow status (wet/dry) Snow water equivalent Soil moisture at surface
Opportunity objectives Accumulated precipitation (over 24 h) Cloud liquid water (CLW) Cloud liquid water (CLW) total column Precipitation intensity at surface (liquid or solid) Soil moisture (in the roots region) Show all Show fewer
Tentative 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