海冰
环境科学
北极的
行星边界层
纬度
大气科学
气候学
地质学
海洋学
地理
大地测量学
气象学
湍流
作者
Liang Chang,Shuli Song,Gao Feng,Yang Zhang,Guoping Gao
出处
期刊:IEEE Transactions on Geoscience and Remote Sensing
[Institute of Electrical and Electronics Engineers]
日期:2024-01-01
卷期号:62: 1-13
标识
DOI:10.1109/tgrs.2023.3342193
摘要
Using the quality controlled radio occultation (RO) refractivity profiles from 9 missions, this study extracts the planetary boundary layer height (PBLH) with the minimum refractivity gradient method during December 2006–November 2019 over the Arctic, investigates the spatio-temporal variations in the PBLH, and discusses the potential relationships of PBLH to sea ice concentration (SIC) and related atmospheric parameters. We find that the RO-derived Arctic PBLH is typically deeper in summer than in autumn, spring and winter. Moreover, PBLH displays clearly synchronous seasonal cycle in all latitude zones over both land and ocean, whereas the PBLH seasonality in different latitude zones over ocean exhibits much different pattern to that over land. Significant increases in PBLH is typically detected in all latitude zones over the entire Arctic except for the 78°–84° N over ocean. In general, PBLH over the Arctic Ocean is consistently negatively (positively) correlated with SIC (surface air temperature (SAT) and precipitable water vapor (PWV)) in each season. However, the response of PBLH to the variations in these parameters varies with the sea ice conditions. PBLH tends to be affected by the moisture advection and the surface radiative cooling in the open ocean and the solid ice pack, respectively, while the PBLH in the marginal ice zone typically has transitional features between the open ocean and the solid ice pack. Furthermore, variations in low cloud fraction (CF) appear to have no direct effect on PBLH over the Arctic Ocean.
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