An Investigation of Optically Very Thin Ice Clouds from Ground-Based ARM Raman Lidars
- Univ. of Washington, Seattle, WA (United States)
Optically very thin ice clouds from the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) and ground-based Raman lidars (RL) at the atmospheric radiation measurement (ARM) sites of the Southern Great Plains (SGP) and Tropical Western Pacific (TWP) are analyzed. The optically very thin ice clouds, with ice cloud column optical depths below 0.01, are about 23% of the transparent ice-cloudy profiles from the RL, compared to 4–7% from CALIPSO. The majority (66–76%) of optically very thin ice clouds from the RLs are found to be adjacent to ice clouds with ice cloud column optical depths greater than 0.01. The temporal structure of RL-observed optically very thin ice clouds indicates a clear sky–cloud continuum. Global cloudiness estimates from CALIPSO observations leveraged with high-sensitivity RL observations suggest that CALIPSO may underestimate the global cloud fraction when considering optically very thin ice clouds.
- Research Organization:
- Univ. of Washington, Seattle, WA (United States)
- Sponsoring Organization:
- National Aeronautics and Space Administration (NASA); USDOE; USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
- Grant/Contract Number:
- SC0018190
- Other Award/Contract Number:
- 80NSSC18K1031
NNX16AO95G
- OSTI ID:
- 2372729
- Alternate ID(s):
- OSTI ID: 1612866
- Journal Information:
- Atmosphere (Basel), Journal Name: Atmosphere (Basel) Journal Issue: 11 Vol. 9; ISSN 2073-4433; ISSN ATMOCZ
- Publisher:
- MDPICopyright Statement
- Country of Publication:
- United States
- Language:
- English
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