Evaluation of Cloud Microphysical Properties Derived From MODIS and Himawari‐8 Using In Situ Aircraft Measurements Over the Southern Ocean
Abstract Cloud microphysical properties from aircraft measurements during the Southern Ocean Clouds, Radiation, Aerosol Transport Experimental Study are used to evaluate the cloud products from the geostationary satellite Himawari‐8 (H‐8) and the polar‐orbiting satellite the Moderate Resolution Imag...
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ftdoajarticles:oai:doaj.org/article:a23c62c340af408bbf9ce1697542136c 2023-05-15T18:24:55+02:00 Evaluation of Cloud Microphysical Properties Derived From MODIS and Himawari‐8 Using In Situ Aircraft Measurements Over the Southern Ocean Lijun Zhao Chuanfeng Zhao Yang Wang Yuan Wang Yikun Yang 2020-05-01T00:00:00Z https://doi.org/10.1029/2020EA001137 https://doaj.org/article/a23c62c340af408bbf9ce1697542136c EN eng American Geophysical Union (AGU) https://doi.org/10.1029/2020EA001137 https://doaj.org/toc/2333-5084 2333-5084 doi:10.1029/2020EA001137 https://doaj.org/article/a23c62c340af408bbf9ce1697542136c Earth and Space Science, Vol 7, Iss 5, Pp n/a-n/a (2020) cloud properties evaluation MODIS Himawari‐8 Southern Ocean aircraft observation Astronomy QB1-991 Geology QE1-996.5 article 2020 ftdoajarticles https://doi.org/10.1029/2020EA001137 2022-12-31T03:07:21Z Abstract Cloud microphysical properties from aircraft measurements during the Southern Ocean Clouds, Radiation, Aerosol Transport Experimental Study are used to evaluate the cloud products from the geostationary satellite Himawari‐8 (H‐8) and the polar‐orbiting satellite the Moderate Resolution Imaging Spectroradiometer (MODIS). Compared to the in situ aircraft observations when aircraft flew horizontally near cloud tops, the cloud droplet effective radius (re) and number concentration (Nd) from H‐8 (MODIS) are 33% (26%–31%) and 2% (9–13%) larger. Both the H‐8 and MODIS retrievals behave similarly for liquid‐only and mixed‐phase low‐level clouds, indicating the weak sensitivity of the satellite cloud retrieval performance to cloud phase. The re and Nd of the cloud profiles from aircraft measurements were also used to compare with the satellite product. It shows that H‐8 re and Nd agree better with aircraft measurements when considering only the in situ data acquired in the upper portions (highest 20%) of the clouds. Roughly, the re overestimation by H‐8 decreases from 18% to 3% when considering the upper portions of clouds compared to all cloud layer averages, except for one case with drizzles appeared. In addition, the performance of MODIS re and Nd is highly dependent on the wavelengths the retrieval method uses. The droplet re retrievals using wavelength of 1.6 μm have much larger biases than that using the other two channels. The potential effects of the cloud vertical variation and the photon penetration depth, the cloud heterogeneity, the cloud droplet size spectra, and the drizzle on satellite retrievals have also been discussed. Article in Journal/Newspaper Southern Ocean Directory of Open Access Journals: DOAJ Articles Southern Ocean Earth and Space Science 7 5 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
cloud properties evaluation MODIS Himawari‐8 Southern Ocean aircraft observation Astronomy QB1-991 Geology QE1-996.5 |
spellingShingle |
cloud properties evaluation MODIS Himawari‐8 Southern Ocean aircraft observation Astronomy QB1-991 Geology QE1-996.5 Lijun Zhao Chuanfeng Zhao Yang Wang Yuan Wang Yikun Yang Evaluation of Cloud Microphysical Properties Derived From MODIS and Himawari‐8 Using In Situ Aircraft Measurements Over the Southern Ocean |
topic_facet |
cloud properties evaluation MODIS Himawari‐8 Southern Ocean aircraft observation Astronomy QB1-991 Geology QE1-996.5 |
description |
Abstract Cloud microphysical properties from aircraft measurements during the Southern Ocean Clouds, Radiation, Aerosol Transport Experimental Study are used to evaluate the cloud products from the geostationary satellite Himawari‐8 (H‐8) and the polar‐orbiting satellite the Moderate Resolution Imaging Spectroradiometer (MODIS). Compared to the in situ aircraft observations when aircraft flew horizontally near cloud tops, the cloud droplet effective radius (re) and number concentration (Nd) from H‐8 (MODIS) are 33% (26%–31%) and 2% (9–13%) larger. Both the H‐8 and MODIS retrievals behave similarly for liquid‐only and mixed‐phase low‐level clouds, indicating the weak sensitivity of the satellite cloud retrieval performance to cloud phase. The re and Nd of the cloud profiles from aircraft measurements were also used to compare with the satellite product. It shows that H‐8 re and Nd agree better with aircraft measurements when considering only the in situ data acquired in the upper portions (highest 20%) of the clouds. Roughly, the re overestimation by H‐8 decreases from 18% to 3% when considering the upper portions of clouds compared to all cloud layer averages, except for one case with drizzles appeared. In addition, the performance of MODIS re and Nd is highly dependent on the wavelengths the retrieval method uses. The droplet re retrievals using wavelength of 1.6 μm have much larger biases than that using the other two channels. The potential effects of the cloud vertical variation and the photon penetration depth, the cloud heterogeneity, the cloud droplet size spectra, and the drizzle on satellite retrievals have also been discussed. |
format |
Article in Journal/Newspaper |
author |
Lijun Zhao Chuanfeng Zhao Yang Wang Yuan Wang Yikun Yang |
author_facet |
Lijun Zhao Chuanfeng Zhao Yang Wang Yuan Wang Yikun Yang |
author_sort |
Lijun Zhao |
title |
Evaluation of Cloud Microphysical Properties Derived From MODIS and Himawari‐8 Using In Situ Aircraft Measurements Over the Southern Ocean |
title_short |
Evaluation of Cloud Microphysical Properties Derived From MODIS and Himawari‐8 Using In Situ Aircraft Measurements Over the Southern Ocean |
title_full |
Evaluation of Cloud Microphysical Properties Derived From MODIS and Himawari‐8 Using In Situ Aircraft Measurements Over the Southern Ocean |
title_fullStr |
Evaluation of Cloud Microphysical Properties Derived From MODIS and Himawari‐8 Using In Situ Aircraft Measurements Over the Southern Ocean |
title_full_unstemmed |
Evaluation of Cloud Microphysical Properties Derived From MODIS and Himawari‐8 Using In Situ Aircraft Measurements Over the Southern Ocean |
title_sort |
evaluation of cloud microphysical properties derived from modis and himawari‐8 using in situ aircraft measurements over the southern ocean |
publisher |
American Geophysical Union (AGU) |
publishDate |
2020 |
url |
https://doi.org/10.1029/2020EA001137 https://doaj.org/article/a23c62c340af408bbf9ce1697542136c |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Earth and Space Science, Vol 7, Iss 5, Pp n/a-n/a (2020) |
op_relation |
https://doi.org/10.1029/2020EA001137 https://doaj.org/toc/2333-5084 2333-5084 doi:10.1029/2020EA001137 https://doaj.org/article/a23c62c340af408bbf9ce1697542136c |
op_doi |
https://doi.org/10.1029/2020EA001137 |
container_title |
Earth and Space Science |
container_volume |
7 |
container_issue |
5 |
_version_ |
1766205959983595520 |