Mingyi Gu

Nanjing University of Information Science and Technology

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Zhaomin Wang

Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)

Jianfen Wei

China Meteorological Administration

G. W. K. Moore

University of Toronto

Kevin R. Wood

University of Washington

Yu Peilong

Yunhe Wang

Chinese Academy of Sciences

Lifeng Zhang

National University of Defense Technology

Xiaoyong Yu

Nanjing University of Information Science and Technology

Li Aibing

PLA 306 Hospital

Jing‐Jia Luo

Nanjing University of Information Science and Technology

Cooperative Institutions

Nanjing University of Information Science and Technology

Chinese Academy of Sciences

University of Chinese Academy of Sciences

University of Washington

Woods Hole Oceanographic Institution

China Meteorological Administration

Ocean University of China

Institute of Oceanology

Shandong Provincial Hospital

Shandong First Medical University

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Planetary Boundary Layer Heights from Cruises in Spring to Autumn Chukchi-Beaufort Sea Compared with ERA5

Mingyi Gu G. W. K. Moore Kevin R. Wood Zhaomin Wang

The planetary boundary layer height (PBLH) is a diagnostic field related to the effective heat capacity of the lower atmosphere and it constrains motion in this layer as well as impacting surface warming. Here we used radiosonde data from five icebreaker cruises to the Chukchi and Beaufort Seas during both spring and fall to derive PBLH that were compared with results from the ERA5 reanalysis. The ERA5 PBLH was similar to but slightly lower than the observation. Clear and consistent seasonal changes were found in both the observation and the reanalysis: PBLH decreases from mid-May to mid-June and subsequently increases after August. The comparison with ERA5 shows that biases in PBLH are a function of wind direction that are largest for northerly flow conditions, suggesting that the availability of upwind observations is important in representing processes active in the planetary boundary layer over the Arctic Ocean.

Beaufort scale

Beaufort sea

10.1002/essoar.10504350.1

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Planetary Boundary Layer Heights from Cruises in Spring to Autumn Chukchi-Beaufort Sea Compared with ERA5

Atmosphere (2021)

Mingyi Gu G. W. K. Moore Kevin R. Wood Zhaomin Wang

The planetary boundary layer height (PBLH) is a diagnostic field related to the effective heat capacity of the lower atmosphere, both stable and convective, and it constrains motion in this layer as well as impacts surface warming. Here, we used radiosonde data from five icebreaker cruises to the Chukchi and Beaufort Seas during both spring and fall to derive PBLH using the bulk Ri method, which were then compared with results from ERA5 reanalysis. The ERA5 PBLH was similar to but slightly lower than the ship observations. Clear and consistent seasonal changes were found in both the observations and the reanalysis: PBLH decreased from mid-May to mid-June and subsequently increased after August. The comparison with ERA5 shows that, besides surface temperature, biases in PBLH are also a function of wind direction, suggesting that the availability of upwind observations is also important in representing processes active in the boundary layer over the Arctic Ocean.

Beaufort scale

Beaufort sea

Mixed layer

10.3390/atmos12111398

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Citations (2)

An assessment of Arctic cloud water paths in atmospheric reanalyses

Acta Oceanologica Sinica (2021)

Mingyi Gu Zhaomin Wang Jianfen Wei Xiaoyong Yu

Interim

10.1007/s13131-021-1706-5

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