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Title: Long-Term Retrievals of Cloud Type and Fair-Weather Shallow Cumulus Events at the ARM SGP Site

Abstract

A long-term climatology of classified cloud types has been generated for 13 years (1997-2009) over the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site for seven cloud categories: low clouds, congestus, deep convection, altocumulus, altostratus, cirrostratus/anvil, and cirrus. The classification was based on the cloud macrophysical quantities of cloud top, cloud base, and physical thickness of cloud layers, as measured by active sensors such as the millimeter-wavelength cloud radar (MMCR) and micropulse lidar (MPL). Climate variability of cloud characteristics has been examined using the 13-yr cloud-type retrieval. Low clouds and cirrus showed distinct diurnal and seasonal cycles. Total cloud occurrence followed the variation of low clouds, with a diurnal peak in early afternoon and a seasonal maximum in late winter. Additionally, further work has been done to identify fair-weather shallow cumulus (FWSC) events for 9 years (2000-08). Periods containing FWSC, a subcategory of clouds classified as low clouds, were produced using cloud fraction information from a total-sky imager and ceilometer. Furthermore, the identified FWSC periods in our study show good agreement with manually identified FWSC, missing only 6 cases out of 70 possible events during the spring to summer seasons (May-August).

Authors:
 [1];  [2];  [3];  [3];  [4];  [3];  [3];  [5]; ORCiD logo [6]
  1. Kyungpook National Univ., Daegu (South Korea). School of Earth System Sciences
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States); NOAA/Earth System Research Lab., Boulder, CO (United States). Cooperative Inst. of Research Environmental Sciences
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  4. Lewis and Clark College, Portland, OR (United States)
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  6. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1571678
Alternate Identifier(s):
OSTI ID: 1574118
Report Number(s):
BNL-212315-2019-JAAM
Journal ID: ISSN 0739-0572
Grant/Contract Number:  
SC0012704; Atmospheric Radiation Measurement Research Facility; Atmospheric Radiation Measurement Research; Atmosperic Radiation Measurement Research; Atmospheric System Research
Resource Type:
Published Article
Journal Name:
Journal of Atmospheric and Oceanic Technology
Additional Journal Information:
Journal Volume: 36; Journal Issue: 10; Journal ID: ISSN 0739-0572
Publisher:
American Meteorological Society
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; North America; Clouds; Cumulus clouds; Algorithms; Cloud retrieval; Remote sensing

Citation Formats

Sunny Lim, Kyo -Sun, Riihimaki, Laura D., Shi, Yan, Flynn, Donna, Kleiss, Jessica M., Berg, Larry K., Gustafson Jr., William I., Zhang, Yunyan, and Johnson, Karen L. Long-Term Retrievals of Cloud Type and Fair-Weather Shallow Cumulus Events at the ARM SGP Site. United States: N. p., 2019. Web. doi:10.1175/JTECH-D-18-0215.1.
Sunny Lim, Kyo -Sun, Riihimaki, Laura D., Shi, Yan, Flynn, Donna, Kleiss, Jessica M., Berg, Larry K., Gustafson Jr., William I., Zhang, Yunyan, & Johnson, Karen L. Long-Term Retrievals of Cloud Type and Fair-Weather Shallow Cumulus Events at the ARM SGP Site. United States. doi:10.1175/JTECH-D-18-0215.1.
Sunny Lim, Kyo -Sun, Riihimaki, Laura D., Shi, Yan, Flynn, Donna, Kleiss, Jessica M., Berg, Larry K., Gustafson Jr., William I., Zhang, Yunyan, and Johnson, Karen L. Thu . "Long-Term Retrievals of Cloud Type and Fair-Weather Shallow Cumulus Events at the ARM SGP Site". United States. doi:10.1175/JTECH-D-18-0215.1.
@article{osti_1571678,
title = {Long-Term Retrievals of Cloud Type and Fair-Weather Shallow Cumulus Events at the ARM SGP Site},
author = {Sunny Lim, Kyo -Sun and Riihimaki, Laura D. and Shi, Yan and Flynn, Donna and Kleiss, Jessica M. and Berg, Larry K. and Gustafson Jr., William I. and Zhang, Yunyan and Johnson, Karen L.},
abstractNote = {A long-term climatology of classified cloud types has been generated for 13 years (1997-2009) over the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site for seven cloud categories: low clouds, congestus, deep convection, altocumulus, altostratus, cirrostratus/anvil, and cirrus. The classification was based on the cloud macrophysical quantities of cloud top, cloud base, and physical thickness of cloud layers, as measured by active sensors such as the millimeter-wavelength cloud radar (MMCR) and micropulse lidar (MPL). Climate variability of cloud characteristics has been examined using the 13-yr cloud-type retrieval. Low clouds and cirrus showed distinct diurnal and seasonal cycles. Total cloud occurrence followed the variation of low clouds, with a diurnal peak in early afternoon and a seasonal maximum in late winter. Additionally, further work has been done to identify fair-weather shallow cumulus (FWSC) events for 9 years (2000-08). Periods containing FWSC, a subcategory of clouds classified as low clouds, were produced using cloud fraction information from a total-sky imager and ceilometer. Furthermore, the identified FWSC periods in our study show good agreement with manually identified FWSC, missing only 6 cases out of 70 possible events during the spring to summer seasons (May-August).},
doi = {10.1175/JTECH-D-18-0215.1},
journal = {Journal of Atmospheric and Oceanic Technology},
number = 10,
volume = 36,
place = {United States},
year = {2019},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1175/JTECH-D-18-0215.1

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