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Title: Cloud Edge Properties Measured by the ARM Shortwave Spectrometer Over Ocean and Land

Abstract

In this paper, we use the spectrally invariant method to study the variability of cloud optical thickness (τ) and droplet effective radius (r eff) in transition zones between the cloudy and clear-sky columns observed by Shortwave Array Spectroradiometer-Zenith at the Southern Great Plains Central Facility site (SGP C1) and during the Marine ARM GPCI Investigation of Clouds (MAGIC) field campaign. The spectrally invariant method approximates the spectra in the transition zone as a linear combination of definitely clear and definitely cloudy spectra. The slope and intercept of the linear relations characterize τ and r eff in the transition region, respectively. The radiative transfer model simulations show that that (i) the slope of the visible band is positively correlated with τ, while (ii) the intercept of the near-infrared band has a high negative correlation with r eff. We have analyzed 22 cloud edge cases from the SGP and MAGIC and found that from cloud to clear in the transitions, (a) the slopes of the visible band decrease, indicating the decrease of τ toward cloud edges, and (b) the intercepts of the near-infrared band show a much more significant increase at the SGP than from the MAGIC. The results from observed casesmore » suggest that while τ decreases for all cases, the decrease in r eff is much more significant for cloud over land at the SGP site compared to the ocean counterpart during the MAGIC campaign.« less

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]
  1. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. Space Research Association, Columbia, MD (United States)
  2. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  3. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Morgan State Univ., Baltimore, MD (United States)
Publication Date:
Research Org.:
National Aeronautic and Space Administration (NASA)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1593962
Grant/Contract Number:  
[SC0005457; SC0018045]
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research: Atmospheres
Additional Journal Information:
[ Journal Volume: 124; Journal Issue: 15]; Journal ID: ISSN 2169-897X
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; cloud edge; ARM; shortwave spectrometer; spectrally invariant; SGP; MAGIC; transition zone; cloud; cloud-aerosol interaction; air entrainment and mixing; spectral invariance; shortwave spectroradiometer

Citation Formats

Yang, Weidong, Marshak, Alexander, and Wen, Guoyong. Cloud Edge Properties Measured by the ARM Shortwave Spectrometer Over Ocean and Land. United States: N. p., 2019. Web. doi:10.1029/2019JD030622.
Yang, Weidong, Marshak, Alexander, & Wen, Guoyong. Cloud Edge Properties Measured by the ARM Shortwave Spectrometer Over Ocean and Land. United States. doi:10.1029/2019JD030622.
Yang, Weidong, Marshak, Alexander, and Wen, Guoyong. Wed . "Cloud Edge Properties Measured by the ARM Shortwave Spectrometer Over Ocean and Land". United States. doi:10.1029/2019JD030622.
@article{osti_1593962,
title = {Cloud Edge Properties Measured by the ARM Shortwave Spectrometer Over Ocean and Land},
author = {Yang, Weidong and Marshak, Alexander and Wen, Guoyong},
abstractNote = {In this paper, we use the spectrally invariant method to study the variability of cloud optical thickness (τ) and droplet effective radius (reff) in transition zones between the cloudy and clear-sky columns observed by Shortwave Array Spectroradiometer-Zenith at the Southern Great Plains Central Facility site (SGP C1) and during the Marine ARM GPCI Investigation of Clouds (MAGIC) field campaign. The spectrally invariant method approximates the spectra in the transition zone as a linear combination of definitely clear and definitely cloudy spectra. The slope and intercept of the linear relations characterize τ and reff in the transition region, respectively. The radiative transfer model simulations show that that (i) the slope of the visible band is positively correlated with τ, while (ii) the intercept of the near-infrared band has a high negative correlation with reff. We have analyzed 22 cloud edge cases from the SGP and MAGIC and found that from cloud to clear in the transitions, (a) the slopes of the visible band decrease, indicating the decrease of τ toward cloud edges, and (b) the intercepts of the near-infrared band show a much more significant increase at the SGP than from the MAGIC. The results from observed cases suggest that while τ decreases for all cases, the decrease in reff is much more significant for cloud over land at the SGP site compared to the ocean counterpart during the MAGIC campaign.},
doi = {10.1029/2019JD030622},
journal = {Journal of Geophysical Research: Atmospheres},
number = [15],
volume = [124],
place = {United States},
year = {2019},
month = {7}
}

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Works referenced in this record:

Spectrally-invariant behavior of zenith radiance around cloud edges simulated by radiative transfer
journal, January 2010

  • Chiu, J. C.; Marshak, A.; Knyazikhin, Y.
  • Atmospheric Chemistry and Physics, Vol. 10, Issue 22
  • DOI: 10.5194/acp-10-11295-2010

MODIS observations of enhanced clear sky reflectance near clouds
journal, January 2009

  • Várnai, Tamás; Marshak, Alexander
  • Geophysical Research Letters, Vol. 36, Issue 6
  • DOI: 10.1029/2008GL037089

Homogeneous and Inhomogeneous Mixing in Cumulus Clouds: Dependence on Local Turbulence Structure
journal, December 2009

  • Lehmann, Katrin; Siebert, Holger; Shaw, Raymond A.
  • Journal of the Atmospheric Sciences, Vol. 66, Issue 12
  • DOI: 10.1175/2009JAS3012.1

Separating real and apparent effects of cloud, humidity, and dynamics on aerosol optical thickness near cloud edges
journal, January 2010

  • Jeong, Myeong-Jae; Li, Zhanqing
  • Journal of Geophysical Research, Vol. 115
  • DOI: 10.1029/2009JD013547

A generalized method for discriminating thermodynamic phase and retrieving cloud optical thickness and effective radius using transmitted shortwave radiance spectra
journal, January 2014

  • LeBlanc, S. E.; Pilewskie, P.; Schmidt, K. S.
  • Atmospheric Measurement Techniques Discussions, Vol. 7, Issue 6
  • DOI: 10.5194/amtd-7-5293-2014

Analysis of co-located MODIS and CALIPSO observations near clouds
journal, January 2012


Clouds, Precipitation, and Marine Boundary Layer Structure during the MAGIC Field Campaign
journal, March 2015


Aerosol effects on the inter-cloud region of a small cumulus cloud field
journal, January 2009

  • Koren, Ilan; Feingold, Graham; Jiang, Hongli
  • Geophysical Research Letters, Vol. 36, Issue 14
  • DOI: 10.1029/2009GL037424

Cloud Sky Cover versus Cloud Fraction: Whole-Sky Simulations and Observations
journal, January 2005

  • Kassianov, Evgueni; Long, Charles N.; Ovtchinnikov, Mikhail
  • Journal of Applied Meteorology, Vol. 44, Issue 1
  • DOI: 10.1175/JAM-2184.1

Spectral invariant behavior of zenith radiance around cloud edges observed by ARM SWS
journal, January 2009

  • Marshak, A.; Knyazikhin, Y.; Chiu, J. C.
  • Geophysical Research Letters, Vol. 36, Issue 16
  • DOI: 10.1029/2009GL039366

On the climate forcing consequences of the albedo continuum between cloudy and clear air
journal, January 2007

  • Charlson, Robert J.; Ackerman, Andrew S.; Bender, Frida A. -M.
  • Tellus B: Chemical and Physical Meteorology, Vol. 59, Issue 4
  • DOI: 10.1111/j.1600-0889.2007.00297.x

Theoretical analysis of mixing in liquid clouds – Part 3: Inhomogeneous mixing
journal, January 2016

  • Pinsky, Mark; Khain, Alexander; Korolev, Alexei
  • Atmospheric Chemistry and Physics, Vol. 16, Issue 14
  • DOI: 10.5194/acp-16-9273-2016

An analysis of potential cloud artifacts in MODIS over ocean aerosol optical thickness products
journal, January 2005


Marine boundary layer structure as observed by A-train satellites
journal, January 2016


Theoretical investigation of mixing in warm clouds – Part 2: Homogeneous mixing
journal, January 2016

  • Pinsky, Mark; Khain, Alexander; Korolev, Alexei
  • Atmospheric Chemistry and Physics, Vol. 16, Issue 14
  • DOI: 10.5194/acp-16-9255-2016

A diffusive model of the turbulent mixing of dry and cloudy air
journal, October 1982

  • Baker, M. B.; Latham, J.
  • Quarterly Journal of the Royal Meteorological Society, Vol. 108, Issue 458
  • DOI: 10.1002/qj.49710845809

Case studies of aerosol remote sensing in the vicinity of clouds
journal, January 2009

  • Redemann, Jens; Zhang, Qin; Russell, Philip B.
  • Journal of Geophysical Research, Vol. 114, Issue D6
  • DOI: 10.1029/2008JD010774

Theoretical study of mixing in liquid clouds – Part 1: Classical concepts
journal, January 2016

  • Korolev, Alexei; Khain, Alex; Pinsky, Mark
  • Atmospheric Chemistry and Physics, Vol. 16, Issue 14
  • DOI: 10.5194/acp-16-9235-2016

Analysis of Humidity Halos around Trade Wind Cumulus Clouds
journal, April 2003


AERONET—A Federated Instrument Network and Data Archive for Aerosol Characterization
journal, October 1998


Global CALIPSO Observations of Aerosol Changes Near Clouds
journal, January 2011

  • Varnai, Tamás; Marshak, Alexander
  • IEEE Geoscience and Remote Sensing Letters, Vol. 8, Issue 1
  • DOI: 10.1109/LGRS.2010.2049982

Spectrally Invariant Approximation within Atmospheric Radiative Transfer
journal, December 2011

  • Marshak, A.; Knyazikhin, Y.; Chiu, J. C.
  • Journal of the Atmospheric Sciences, Vol. 68, Issue 12
  • DOI: 10.1175/JAS-D-11-060.1

Correlation between cloud condensation nuclei concentration and aerosol optical thickness in remote and polluted regions
journal, January 2009


Influences of Isolated Cumulus Clouds on the Humidity of Their Surroundings
journal, January 1996


Observation of the spectrally invariant properties of clouds in cloudy-to-clear transition zones during the MAGIC field campaign
journal, December 2016


Determination of Cloud Vertical Structure from Upper-Air Observations
journal, October 1995


Physical interpretation of the spectral radiative signature in the transition zone between cloud-free and cloudy regions
journal, January 2009

  • Chiu, J. C.; Marshak, A.; Knyazikhin, Y.
  • Atmospheric Chemistry and Physics, Vol. 9, Issue 4
  • DOI: 10.5194/acp-9-1419-2009

SBDART: A Research and Teaching Software Tool for Plane-Parallel Radiative Transfer in the Earth's Atmosphere
journal, October 1998


On the twilight zone between clouds and aerosols: CLOUDS TWILIGHT ZONE
journal, April 2007

  • Koren, Ilan; Remer, Lorraine A.; Kaufman, Yoram J.
  • Geophysical Research Letters, Vol. 34, Issue 8
  • DOI: 10.1029/2007GL029253

The influence of entrainment on the evolution of cloud droplet spectra: I. A model of inhomogeneous mixing
journal, July 1980

  • Baker, M. B.; Corbin, R. G.; Latham, J.
  • Quarterly Journal of the Royal Meteorological Society, Vol. 106, Issue 449
  • DOI: 10.1002/qj.49710644914

Aerosol and cloud interaction observed from high spectral resolution lidar data
journal, January 2008

  • Su, Wenying; Schuster, Gregory L.; Loeb, Norman G.
  • Journal of Geophysical Research, Vol. 113, Issue D24
  • DOI: 10.1029/2008JD010588

Aerosol optical depth increase in partly cloudy conditions: AEROSOL OPTICAL DEPTH INCREASE IN CLOUDS
journal, September 2012

  • Chand, Duli; Wood, Robert; Ghan, Steven J.
  • Journal of Geophysical Research: Atmospheres, Vol. 117, Issue D17
  • DOI: 10.1029/2012JD017894