Determining cloud thermodynamic phase from the polarized Micro Pulse Lidar
-
Published:2020-12-18
Issue:12
Volume:13
Page:6901-6913
-
ISSN:1867-8548
-
Container-title:Atmospheric Measurement Techniques
-
language:en
-
Short-container-title:Atmos. Meas. Tech.
Author:
Lewis Jasper R., Campbell James R.ORCID, Stewart Sebastian A., Tan Ivy, Welton Ellsworth J., Lolli SimoneORCID
Abstract
Abstract. A method to distinguish cloud thermodynamic phase from
polarized Micro Pulse Lidar (MPL) measurements is described. The method
employs a simple enumerative approach to classify cloud layers as either
liquid water, ice water, or mixed-phase clouds based on the linear volume
depolarization ratio and cloud top temperatures derived from Goddard Earth
Observing System, version 5 (GEOS-5), assimilated data. Two years of cloud retrievals from the Micro Pulse Lidar Network (MPLNET) site in Greenbelt, MD,
are used to evaluate the performance of the algorithm. The fraction of
supercooled liquid water in the mixed-phase temperature regime (−37–0 ∘C) calculated using MPLNET data is compared
to similar calculations made using the spaceborne Cloud-Aerosol Lidar with
Orthogonal Polarization (CALIOP) instrument onboard the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite, with
reasonable consistency.
Publisher
Copernicus GmbH
Subject
Atmospheric Science
Reference58 articles.
1. Campbell, J. R. and Sassen, K.: Polar stratospheric clouds at the South
Pole from 5 years of continuous lidar data: Macrophysical, optical and
thermodynamic properties, J. Geophys. Res., 113, D20204,
https://doi.org/10.1029/2007JD009680, 2008. 2. Campbell, J. R., Hlavka, D. L., Welton, E. J., Flynn, C. J., Turner, D. D.,
Spinhirne, J. D., Scott, V. S., and Hwang, I. H.: Full-time, eye-safe cloud
and aerosol lidar observation at Atmosphere Radiation Measurement program
sites: Instrument and data processing, J. Atmos. Ocean. Tech., 19,
431–442, https://doi.org/10.1175/1520-0426(2002)019<0431:FTESCA>2.0.CO;2, 2002. 3. Campbell, J. R., Welton, E. J., Spinhirne, J. D., Ji, Q., Tsay, S.-C.,
Piketh, S. J., Barenbrug, M., and Holben, B. N.: Micropulse lidar
observations of tropospheric aerosols over northeastern South Africa during
the ARREX and SAFARI 2000 dry season experiments, J. Geophys. Res.,
108, 8497, https://doi.org/10.1029/2002JD002563, 2003. 4. Campbell, J. R., Vaughan, M. A., Oo, M., Holz, R. E., Lewis, J. R., and Welton, E. J.: Distinguishing cirrus cloud presence in autonomous lidar measurements, Atmos. Meas. Tech., 8, 435–449, https://doi.org/10.5194/amt-8-435-2015, 2015. 5. Campbell, J. R., Lolli, S., Lewis, J. R., Gu, Y., and Welton, E. J.: Daytime
cirrus cloud top-of-atmosphere radiative forcing properties at a midlatitude
site and their global consequence, J. Appl. Meteorol. Clim., 55,
1667–1679, https://doi.org/10.1175/JAMC-D-15-0217.1, 2016.
Cited by
17 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|