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Title: Calibration of the 2007-2017 record of Atmospheric Radiation Measurements cloud radar observations using CloudSat

Abstract

The U.S. Department of Energy (DOE) Atmospheric Radiation Measurements (ARM) facility has been at the forefront of millimeter-wavelength radar development and operations since the late 1990s. The operational performance of the ARM cloud radar network is very high; however, the calibration of the historical record is not well established. Here, a well-characterized spaceborne 94 GHz cloud profiling radar (CloudSat) is used to characterize the calibration of the ARM cloud radars. The calibration extends from 2007 to 2017 and includes both fixed and mobile deployments. Collectively, over 43 years of ARM profiling cloud radar observations are compared to CloudSat and the calibration offsets are reported as a function of time using a sliding window of 6 months. The study also provides the calibration offsets for each operating mode of the ARM cloud radars. Overall, significant calibration offsets are found that exceed the uncertainty of the technique (1–2 dB). The findings of this study are critical to past, ongoing, and planned studies of cloud and precipitation and should assist the DOE ARM to build a legacy decadal ground-based cloud radar dataset for global climate model validation.

Authors:
ORCiD logo
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:
1561368
Alternate Identifier(s):
OSTI ID: 1569542
Report Number(s):
BNL-212182-2019-JAAM
Journal ID: ISSN 1867--8548
Grant/Contract Number:  
SC0012704
Resource Type:
Published Article
Journal Name:
Atmospheric Measurement Techniques
Additional Journal Information:
Journal Volume: 12; Journal Issue: 9; Journal ID: ISSN 1867--8548
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Kollias, Pavlos. Calibration of the 2007-2017 record of Atmospheric Radiation Measurements cloud radar observations using CloudSat. United States: N. p., 2019. Web. doi:10.5194/amt-12-4949-2019.
Kollias, Pavlos. Calibration of the 2007-2017 record of Atmospheric Radiation Measurements cloud radar observations using CloudSat. United States. doi:10.5194/amt-12-4949-2019.
Kollias, Pavlos. Thu . "Calibration of the 2007-2017 record of Atmospheric Radiation Measurements cloud radar observations using CloudSat". United States. doi:10.5194/amt-12-4949-2019.
@article{osti_1561368,
title = {Calibration of the 2007-2017 record of Atmospheric Radiation Measurements cloud radar observations using CloudSat},
author = {Kollias, Pavlos},
abstractNote = {The U.S. Department of Energy (DOE) Atmospheric Radiation Measurements (ARM) facility has been at the forefront of millimeter-wavelength radar development and operations since the late 1990s. The operational performance of the ARM cloud radar network is very high; however, the calibration of the historical record is not well established. Here, a well-characterized spaceborne 94 GHz cloud profiling radar (CloudSat) is used to characterize the calibration of the ARM cloud radars. The calibration extends from 2007 to 2017 and includes both fixed and mobile deployments. Collectively, over 43 years of ARM profiling cloud radar observations are compared to CloudSat and the calibration offsets are reported as a function of time using a sliding window of 6 months. The study also provides the calibration offsets for each operating mode of the ARM cloud radars. Overall, significant calibration offsets are found that exceed the uncertainty of the technique (1–2 dB). The findings of this study are critical to past, ongoing, and planned studies of cloud and precipitation and should assist the DOE ARM to build a legacy decadal ground-based cloud radar dataset for global climate model validation.},
doi = {10.5194/amt-12-4949-2019},
journal = {Atmospheric Measurement Techniques},
number = 9,
volume = 12,
place = {United States},
year = {2019},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.5194/amt-12-4949-2019

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