Determination of atmospheric column condensate using active and passive remote sensing technology
Abstract To further exploit atmospheric cloud water resources (CWRs), it is necessary to correctly evaluate the number of CWRs in an area. The CWRs are hydrometeors that have not participated in precipitation formation at the surface and are suspended in the atmosphere to be exploited and maximise possible precipitation in the atmosphere (Zhou et al., 2020). Three items are included in CWRs: the existing hydrometeors at a certain time, the influx of atmospheric hydrometeors along the boundaries of the study area, and the mass of hydrometeors converted from water vapour through condensation or desublimation, defined as condensate. Condensate constitutes the most important part of CWRs. At present, there is a lack of effective observation methods for atmospheric column condensate evaluation, and direct observation data of CWRs are thus insufficient. A detection method for atmospheric column condensate is proposed and presented. The formation of condensate is closely related to atmospheric meteorological parameters (e.g. temperature and vertical airflow velocity). The amount of atmospheric column condensate can be calculated by the saturated water vapour density and the ascending velocity at the cloud base and top. Active and passive remote sensing technologies are applied to detect the mass of atmospheric column condensate. Combining millimetre cloud radar, lidar and microwave radiometers can suitably observe the vertical velocity and temperature at the cloud boundary. The saturated vapour density can be derived from the temperature, and then, water vapour flux and the maximum possible condensate can be deduced. A detailed detection scheme and data calculation method are presented, and the presented method can realise the determination of atmospheric column condensate. A case of cloud layer change before precipitation is considered, and atmospheric column condensate is deduced and obtained. This is the first application, to our knowledge, of observations for atmospheric column condensate evaluation, which is significant for research on the hydrologic cycle and the assessment of CWRs.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Determination of atmospheric column condensate using active and passive remote sensing technology ; volume:15 ; number:11 ; year:2022 ; pages:3555-3567 ; extent:13
Atmospheric measurement techniques ; 15, Heft 11 (2022), 3555-3567 (gesamt 13)
- Urheber
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Di, Huige
Yuan, Yun
Yan, Qing
Xin, Wenhui
Li, Shichun
Wang, Jun
Wang, Yufeng
Zhang, Lei
Hua, Dengxin
- DOI
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10.5194/amt-15-3555-2022
- URN
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urn:nbn:de:101:1-2022061605152979073474
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:35 MESZ
Datenpartner
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Beteiligte
- Di, Huige
- Yuan, Yun
- Yan, Qing
- Xin, Wenhui
- Li, Shichun
- Wang, Jun
- Wang, Yufeng
- Zhang, Lei
- Hua, Dengxin
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