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Title: Comparisons of Ice Water Path in Deep Convective Systems Among Ground‐Based, GOES, and CERES‐MODIS Retrievals

Abstract

Retrievals of convective cloud microphysical properties based on passive satellite imagery are difficult. To help quantify their uncertainties, ice water paths (IWPs) retrieved from the NASA Clouds and the Earth's Radiant Energy System project using Geostationary Operational Environmental Satellite (GOES) and Terra/Aqua MODerate-resolution Imaging Spectroradiometer observations are compared with IWPs retrieved from Next-Generation Radar (NEXRAD) observations over a large domain (32°N to 40°N and 105°W to 91°W) during the 2011 Midlatitude Continental Convective Clouds Experiment field campaign. Based on comparisons of pixel-level (4 km × 4 km) daytime IWP retrievals from NEXRAD and GOES, it is found that NEXRAD- and GOES-retrieved mean IWPs are 2.03 and 1.83 kg m -2, respectively, for ice-phase cloud in thick anvil area. Their mean difference of 0.20 kg m -2 (with 95% confidence interval: 0.14-0.26 kg m -2) is within the uncertainty of NEXRAD retrievals. However, the low correlation between pixel-to-pixel comparisons indicates a large variation in GOES-retrieved IWP. For mixed-phase clouds in thick anvil areas, in addition to IWPs, total water paths (TWPs, sum of ice and liquid water path) are estimated with aid of aircraft measurements for NEXRAD retrievals and corrected using a TWP parameterization for GOES retrievals. The mean values ofmore » estimated TWPs from NEXRAD (corrected using aircraft in situ measurements) and GOES are similar. GOES and Clouds and the Earth's Radiant Energy System-MODerate-resolution Imaging Spectroradiometer-retrieved IWPs/TWPs generally do not exceed 5 kg m -2. Large differences and low correlations exist between satellite and NEXRAD retrievals in stratiform rain areas. Possible reasons for the differences between retrievals are discussed.« less

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [2];  [2]; ORCiD logo [3];  [3]; ORCiD logo [1]
  1. Univ. of Arizona, Tucson, AZ (United States)
  2. NASA Langley Research Center, Hampton, VA (United States)
  3. SSAI, Hampton, VA (United States)
Publication Date:
Research Org.:
Univ. of Arizona, Tucson, AZ (United States); NASA Langley Research Center, Hampton, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1537322
Alternate Identifier(s):
OSTI ID: 1419700
Grant/Contract Number:  
SC0017015; SC0013896; DE‐SC0017015
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research: Atmospheres
Additional Journal Information:
Journal Volume: 123; Journal Issue: 3; Journal ID: ISSN 2169-897X
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; Meteorology & Atmospheric Sciences

Citation Formats

Tian, Jingjing, Dong, Xiquan, Xi, Baike, Minnis, Patrick, Smith, William L., Sun‐Mack, Sunny, Thieman, Mandana, and Wang, Jingyu. Comparisons of Ice Water Path in Deep Convective Systems Among Ground‐Based, GOES, and CERES‐MODIS Retrievals. United States: N. p., 2018. Web. doi:10.1002/2017jd027498.
Tian, Jingjing, Dong, Xiquan, Xi, Baike, Minnis, Patrick, Smith, William L., Sun‐Mack, Sunny, Thieman, Mandana, & Wang, Jingyu. Comparisons of Ice Water Path in Deep Convective Systems Among Ground‐Based, GOES, and CERES‐MODIS Retrievals. United States. doi:10.1002/2017jd027498.
Tian, Jingjing, Dong, Xiquan, Xi, Baike, Minnis, Patrick, Smith, William L., Sun‐Mack, Sunny, Thieman, Mandana, and Wang, Jingyu. Thu . "Comparisons of Ice Water Path in Deep Convective Systems Among Ground‐Based, GOES, and CERES‐MODIS Retrievals". United States. doi:10.1002/2017jd027498. https://www.osti.gov/servlets/purl/1537322.
@article{osti_1537322,
title = {Comparisons of Ice Water Path in Deep Convective Systems Among Ground‐Based, GOES, and CERES‐MODIS Retrievals},
author = {Tian, Jingjing and Dong, Xiquan and Xi, Baike and Minnis, Patrick and Smith, William L. and Sun‐Mack, Sunny and Thieman, Mandana and Wang, Jingyu},
abstractNote = {Retrievals of convective cloud microphysical properties based on passive satellite imagery are difficult. To help quantify their uncertainties, ice water paths (IWPs) retrieved from the NASA Clouds and the Earth's Radiant Energy System project using Geostationary Operational Environmental Satellite (GOES) and Terra/Aqua MODerate-resolution Imaging Spectroradiometer observations are compared with IWPs retrieved from Next-Generation Radar (NEXRAD) observations over a large domain (32°N to 40°N and 105°W to 91°W) during the 2011 Midlatitude Continental Convective Clouds Experiment field campaign. Based on comparisons of pixel-level (4 km × 4 km) daytime IWP retrievals from NEXRAD and GOES, it is found that NEXRAD- and GOES-retrieved mean IWPs are 2.03 and 1.83 kg m-2, respectively, for ice-phase cloud in thick anvil area. Their mean difference of 0.20 kg m-2 (with 95% confidence interval: 0.14-0.26 kg m-2) is within the uncertainty of NEXRAD retrievals. However, the low correlation between pixel-to-pixel comparisons indicates a large variation in GOES-retrieved IWP. For mixed-phase clouds in thick anvil areas, in addition to IWPs, total water paths (TWPs, sum of ice and liquid water path) are estimated with aid of aircraft measurements for NEXRAD retrievals and corrected using a TWP parameterization for GOES retrievals. The mean values of estimated TWPs from NEXRAD (corrected using aircraft in situ measurements) and GOES are similar. GOES and Clouds and the Earth's Radiant Energy System-MODerate-resolution Imaging Spectroradiometer-retrieved IWPs/TWPs generally do not exceed 5 kg m-2. Large differences and low correlations exist between satellite and NEXRAD retrievals in stratiform rain areas. Possible reasons for the differences between retrievals are discussed.},
doi = {10.1002/2017jd027498},
journal = {Journal of Geophysical Research: Atmospheres},
number = 3,
volume = 123,
place = {United States},
year = {2018},
month = {1}
}

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