Western disturbances seen with AMSU-B and infrared sensors

Retrieval of temperature and moisture profiles from AMSU-A and AMSU-B measurements

The NOAA-15 weather satellite carries the Advanced Microwave Sounding Units-A and -B (AMSU-A, AMSU-B) which measure thermal emission from an atmospheric oxygen band, two water lines, and several window frequencies. An iterated minimum-variance algorithm retrieves profiles of temperature and humidity in the atmosphere from this data. Relative humidity is converted into absolute humidity with use...

The impact of ozone lines on AMSU-B radiances

[1] The impact of ozone lines on Advanced Microwave Sounding Unit-B (AMSU-B) radiances was investigated using a line-by-line radiative transfer model. The impact is found to be the largest for channel 18 (183.31 ± 1.00 GHz), with a maximum up to about 0.5 K. The channels 17 (150 GHz) and 20 (183.31 ± 7.00 GHz) are also marginally affected by the ozone lines. The magnitude of the impact shows an...

AMSU-B Observations of Mixed-Phase Clouds over Land

Measurements from passive microwave satellite instruments such as the Advanced Microwave Sounding Unit B (AMSU-B) are sensitive to both liquid and ice cloud particles. Radiative transfer modeling is exploited to simulate the response of the AMSU-B instrument to mixed-phase clouds over land. The plane-parallel radiative transfer model employed for the study accounts for scattering and absorption...

A Western Atlantic Vortex Seen by Tiros

TIROS I observed :tn extratropical cyclone near Hcxrrnuda on t,hree occasions in early hIay 1960 during the last 86 hours of the life cycle of the storm. A study of this cas^ was undertaken with three objectives in mind: (a) t o describe interesting features of the organizat,ion manifested in the cloud patterns and compare these with conventional analyses; (b) to present a subjective interpreta...

Infrared Spectral Radiance Intercomparisons with Satellite and Aircraft Sensors