CaltechAUTHORS
  A Caltech Library Service

Retrieval of Ice-Over-Water Cloud Microphysical and Optical Properties Using Passive Radiometers

Teng, Shiwen and Liu, Chao and Zhang, Zhibo and Wang, Yuan and Sohn, Byung‐Ju and Yung, Yuk L. (2020) Retrieval of Ice-Over-Water Cloud Microphysical and Optical Properties Using Passive Radiometers. Geophysical Research Letters, 47 (16). Art. No. e2020GL088941. ISSN 0094-8276. https://resolver.caltech.edu/CaltechAUTHORS:20200818-102949818

[img] PDF - Accepted Version
See Usage Policy.

1631Kb
[img] MS Word - Supplemental Material
See Usage Policy.

2128Kb

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20200818-102949818

Abstract

Current satellite cloud products from passive radiometers provide effective single‐layer cloud properties by assuming a homogeneous cloud in a pixel, resulting in inevitable biases when multiple‐layer clouds are present in a vertical column. We devise a novel method to retrieve cloud vertical properties for ice‐over‐water clouds using passive radiometers. Based on the absorptivity differences of liquid water and ice clouds at four shortwave‐infrared channels (centered at 0.87, 1.61, 2.13, and 2.25 μm), cloud optical thicknesses (COT) and effective radii of both upper‐layer ice and lower‐layer liquid water clouds are inferred simultaneously. The algorithm works most effectively for clouds with ice COT < 7 and liquid water COT > 5. The simulated spectral reflectances based on our retrieved ice‐over‐water clouds become more consistent with observations than those with a single‐layer assumption. This new algorithm will improve our understanding of clouds, and we suggest that these four cloud channels should be all included in future satellite sensors.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1029/2020gl088941DOIArticle
ORCID:
AuthorORCID
Teng, Shiwen0000-0003-3436-7882
Liu, Chao0000-0001-7049-493X
Zhang, Zhibo0000-0001-9491-1654
Wang, Yuan0000-0001-6657-8401
Sohn, Byung‐Ju0000-0001-6134-3515
Yung, Yuk L.0000-0002-4263-2562
Additional Information:© 2020 American Geophysical Union. Issue Online: 19 August 2020; Version of Record online: 19 August 2020; Accepted manuscript online: 06 August 2020; Manuscript accepted: 28 July 2020; Manuscript revised: 23 July 2020; Manuscript received: 19 May 2020. We acknowledge the funding support by the National Natural Science Foundation of China (41975025), the National Key Research and Development Program of China (2018YFC1506502), the Natural Science Foundation of Jiangsu Province (BK20190093), and the Postgraduate Research and Practice Innovation Program of Jiangsu Province (KYCX20_0926).
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China41975025
National Key Research and Development Program of China2018YFC1506502
Natural Science Foundation of Jiangsu ProvinceBK20190093
Postgraduate Research and Practice Innovation Program of Jiangsu ProvinceKYCX20_0926
Subject Keywords:Cloud Properties; Satellite Radiameter; Vertical distribution
Issue or Number:16
Record Number:CaltechAUTHORS:20200818-102949818
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200818-102949818
Official Citation:Teng, S., Liu, C., Zhang, Z., Wang, Y., Sohn, B.‐J., & Yung, Y. L. (2020). Retrieval of ice‐over‐water cloud microphysical and optical properties using passive radiometers. Geophysical Research Letters, 47, e2020GL088941. https://doi.org/10.1029/2020GL088941
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104995
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:18 Aug 2020 18:16
Last Modified:22 Sep 2020 20:33

Repository Staff Only: item control page