Submillimeter-wave Passive Remote Sensing of Ice Clouds
Journal Articles
A paper about a new ice cloud profile retrieval algorithm has been
published in Atmospheric Measurement Techniques . It uses in
situ microphysical and humidity measurements from TC4 along with
CloudSat data for the a priori information, performs retrievals with
CoSSIR data, and evaluates the retrievals with Cloud Radar System data
from TC4.
- CoSSIR TC4 retrieval
algorithm paper (2.2 MB PDF)
(Evans, K. F., J. R. Wang, D. O'C Starr, G. Heymsfield, L. Li, L.
Tian, R. P. Lawson, A. J. Heymsfield, and A. Bansemer, 2012: Ice
hydrometeor profile retrieval algorithm for high frequency microwave
radiometers: application to the CoSSIR instrument during TC4. Atmos.
Meas. Tech., 5, 2277-2306. doi:10.5194/amt-5-2277-2012.)
http://www.atmos-meas-tech.net/5/2277/2012/
A paper about retrievals of anvil ice cloud properties from
CRYSTAL-FACE CoSSIR data and validation with the Cloud Radar System
(CRS) has been published in the Journal of Applied Meteorology
.
- CoSSIR CRYSTAL-FACE paper (1.5 MB PDF)
(Evans, K. F., J. R. Wang, P. Racette, G. Heymsfield, L. Li, 2005:
Ice cloud retrievals and analysis with data from the Compact Scanning
Submillimeter Imaging Radiometer and the Cloud Radar System during
CRYSTAL-FACE. J. Appl. Meteor, 44, 839-859.)
A paper describing the JPL SWCIR instrument, the Bayesian retrieval
algorithm, and simulations of retrieval accuracy was published in
JGR:
- SWCIR simulation paper (1.1 MB PDF)
(Evans, K. F., S. J. Walter, A. J. Heymsfield and G. M. McFarquhar,
2002: The Submillimeter-wave cloud ice radiometer: Simulations
of retrieval algorithm performance. J. Geophys. Res.,
107(0), 10.1029/2001JD000709.)
A paper using radiative transfer modeling to gain a detailed
understanding of submillimeter cirrus remote sensing was published in
the Journal of Applied Meteorology:
- Submm cirrus remote sensing (450 kB PDF)
(Evans, K. F., S. J. Walter, A. J. Heymsfield and M. N. Deeter, 1998:
Modeling of Submillimeter Passive Remote Sensing of Cirrus Clouds.
J. Appl. Met., 37, 184-205.)
A paper exploring the potential of a submillimeter spectrometer for
cirrus remote sensing was also published in JAM:
- FTS technique (210 kB PDF)
(Evans, K. F., A. H. Evans, I. G. Nolt and B. T. Marshall, 1999:
The Prospect for Remote Sensing of Cirrus Clouds with a
Submillimeter-wave Spectrometer. J. Appl. Meteor., 38, 514-525.)
My work in this area started with a theoretical exploration of
microwave radiative transfer in nonspherical cirrus ice crystals.
Two papers were published from this portion of my PhD thesis:
- Part I (1.2MB PDF)
(Evans, K. F., and G. L. Stephens, 1995: Microwave radiative
transfer through clouds composed of realistically shaped ice
crystals. Part I: Single scattering properties.
J. Atmos. Sci., 52, 2041-2057.)
- Part II (1.4MB PDF)
(Evans, K. F., and G. L. Stephens, 1995: Microwave radiative
transfer through clouds composed of realistically shaped ice
crystals. Part II: Remote Sensing of Ice Clouds
J. Atmos. Sci., 52, 2058-2072.)
Reports
A channel selection
study (2003) (431 kB PDF) describes ice cloud retrieval simulations
of 26 microwave channel sets with frequencies from 183 to 916 GHz and 6
sets of four infrared wavelength bands to try to determine the optimal
channels for cirrus retrievals. A section of the report describes
retrieval simulations for clouds with horizontally oriented particles
and investigates issues of polarization.
Last modified: January 4, 2018
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