当前位置：
X-MOL 学术
›
J. Geophys. Res. Atmos.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Heterogeneous Nucleation of Midlevel Cloud Layer Influenced by Transported Asian Dust Over Wuhan (30.5°N, 114.4°E), China
Journal of Geophysical Research: Atmospheres ( IF 4.4 ) Pub Date : 2020-12-09 , DOI: 10.1029/2020jd033394 Yun He 1, 2, 3 , Fan Yi 1, 2, 3 , Yang Yi 1, 2, 3 , Fuchao Liu 1, 2, 3 , Yunpeng Zhang 1, 2, 3
Journal of Geophysical Research: Atmospheres ( IF 4.4 ) Pub Date : 2020-12-09 , DOI: 10.1029/2020jd033394 Yun He 1, 2, 3 , Fan Yi 1, 2, 3 , Yang Yi 1, 2, 3 , Fuchao Liu 1, 2, 3 , Yunpeng Zhang 1, 2, 3
Affiliation
Midlevel cloud layers (2–7 km) pertinent to transported Asian dust layers were observed on 26 occasions from the polarization lidar measurements during the period from December 2012 to December 2013 over Wuhan (30.5°N, 114.4°E), China. The events mainly occurred in winter. Cloud layers were mostly detected (19 out of 26) on top of the aloft Asian dust layers. The boundary between cloud layer and dust layer appeared at altitudes of 4–7 km. The observed events are classified into three categories: (1) category A (6 cases), supercooled liquid cloud layers persistently existed without an evident sign of freezing; (2) category B (9 cases), supercooled liquid cloud appeared initially and then ice crystals formed on the boundary between the cloud layer and dust layer; (3) category C (11 cases), only a cloud containing ice crystals was present throughout while the pure liquid stage did not present previously, indicating that deposition nucleation might take place. Cloud top temperatures (CTTs) for heterogeneous ice formation ranged from −38.5°C to −18.3°C; no ice formation occurred with CTT warmer than −15°C. After thousands of kilometers transport, ice nucleation efficiency of Asian dust over Wuhan substantially did not present a distinct change compared with that of pure dust.
更新日期：2021-01-15
京公网安备 11010802027423号