CLWRetMW_SSMIS¶
Using channels 12-18 of SSMIS satellite brightness temperatures, retrieve cloud liquid water as described by the references listed below. This follows a similar routine in GSI Observer.
References:¶
Weng, F., R. R. Ferraro, and N. C. Grody, 1999: Effects of AMSU-A cross track asymmetry of brightness temperatures on retrieval of atmospheric and surface parameters. Microwave Radiometry and Remote Sensing of the Earth’s Surface and Atmosphere, edited by P. Pampaloni, and S. Paloscia, pp. 255–262, VSP Int. Sci., Leiden, Netherlands.
Yan, B. and F. Weng, 2008: Intercalibration Between Special Sensor Microwave Imager/Sounder and Special Sensor Microwave Imager. IEEE Transactions on Geoscience and Remote Sensing, vol. 46, no. 4, pp. 984-995 doi: 10.1109/TGRS.2008.915752.
Required yaml parameters:¶
- ch19h
channel number of brightness temperature from 19GHz horizontal polarized channel
- ch19v
channel number of brightness temperature from 19GHz vertical polarized channel
- ch22v
channel number of brightness temperature from 22GHz vertical polarized channel
- ch37h
channel number of brightness temperature from 37GHz horizontal polarized channel
- ch37v
channel number of brightness temperature from 37GHz vertical polarized channel
- ch91v
channel number of brightness temperature from 91GHz vertical polarized channel
- ch91h
channel number of brightness temperature from 91GHz horizontal polarized channel
Example configuration:¶
- filter: Bounds Check
filter variables:
- name: brightnessTemperature
channels: 12-18
test variables:
- name: ObsFunction/CLWRetMW_SSMIS
options:
satellite: SSMIS
ch19h: 12
ch19v: 13
ch22v: 14
ch37h: 15
ch37v: 16
ch91v: 17
ch91h: 18
varGroup: ObsValue
minvalue: 0.0
maxvalue: 2.0
In this example, any retrieved cloud liquid water value less than zero or greater than 2 will cause the observation to be rejected.