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Advances in Meteorology Volume 2017 ,2017-02-20
Relation between the Atmospheric Boundary Layer and Impact Factors under Severe Surface Thermal Conditions
Research Article
Yinhuan Ao 1 Jiangang Li 2 , 3 Zhaoguo Li 1 Shihua Lyu 1 , 4 Cailian Jiang 5 Minzhong Wang 2 , 3
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DOI:10.1155/2017/8352461
Received 2016-08-30, accepted for publication 2017-01-17, Published 2017-01-17
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摘要

This paper reported a comprehensive analysis on the diurnal variation of the Atmospheric Boundary Layer (ABL) in summer of Badain Jaran Desert and discussed deeply the effect of surface thermal to ABL, including the Difference in Surface-Air Temperature (DSAT), net radiation, and sensible heat, based on limited GPS radiosonde and surface observation data during two intense observation periods of experiments. The results showed that (1) affected by topography of the Tibetan Plateau, the climate provided favorable external conditions for the development of Convective Boundary Layer (CBL), (2) deep CBL showed a diurnal variation of three- to five-layer structure in clear days and five-layer ABL structure often occurred about sunset or sunrise, (3) the diurnal variation of DSAT influenced thickness of ABL through changes of turbulent heat flux, (4) integral value of sensible heat which rapidly converted by surface net radiation had a significant influence on the growth of CBL throughout daytime. The cumulative effect of thick RML dominated the role after CBL got through SBL in the development stage, especially in late summer, and (5) the development of CBL was promoted and accelerated by the variation of wind field and distribution of warm advection in high and low altitude.

授权许可

Copyright © 2017 Yinhuan Ao et al. 2017
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

图表

(a) 700 hPa mean atmospheric circulation field during the last 40 years (solid line: geopotential height, unit: gpm; dash line: temperature, and unit: Celsius degree) and (b) mean vertical velocity and relative humidity during the last 40 years along 40°N (solid line: vertical velocity, unit: cm·s−1; dash line: relative humidity, unit: %).

(a) 700 hPa mean atmospheric circulation field during the last 40 years (solid line: geopotential height, unit: gpm; dash line: temperature, and unit: Celsius degree) and (b) mean vertical velocity and relative humidity during the last 40 years along 40°N (solid line: vertical velocity, unit: cm·s−1; dash line: relative humidity, unit: %).

Geographic environment and ABL experiment observation field in Badain Jaran taken on July 4, 2012.

Comparison of potential temperature profile on (a) July 4, 2012, and (b) August 30, 2009. The observation time (UTC) of each profile is showed in the legend.

Comparison of potential temperature profile on (a) July 4, 2012, and (b) August 30, 2009. The observation time (UTC) of each profile is showed in the legend.

Daily variation of potential temperature structure on (a) July 4, 2012, and (b) August 30, 2009.

Daily variation of potential temperature structure on (a) July 4, 2012, and (b) August 30, 2009.

Daily maximum thickness variation of CBL and SBL: (a) midsummer in 2012 and (b) late summer in 2009.

Daily maximum thickness variation of CBL and SBL: (a) midsummer in 2012 and (b) late summer in 2009.

The daily relationship between DSAT, net radiation, sensible heat flux, and ABL on ((a), (c)) July 4, 2012, and ((b), (d)) August 30, 2009.

The daily relationship between DSAT, net radiation, sensible heat flux, and ABL on ((a), (c)) July 4, 2012, and ((b), (d)) August 30, 2009.

The daily relationship between DSAT, net radiation, sensible heat flux, and ABL on ((a), (c)) July 4, 2012, and ((b), (d)) August 30, 2009.

The daily relationship between DSAT, net radiation, sensible heat flux, and ABL on ((a), (c)) July 4, 2012, and ((b), (d)) August 30, 2009.

The relationship between (a) CBL and Hc in midsummer in 2012; (b) CBL and Hc in late summer in 2009; (c) SBL and Hc in midsummer in 2012; (d) SBL and Hc in late summer in 2009.

The relationship between (a) CBL and Hc in midsummer in 2012; (b) CBL and Hc in late summer in 2009; (c) SBL and Hc in midsummer in 2012; (d) SBL and Hc in late summer in 2009.

The relationship between (a) CBL and Hc in midsummer in 2012; (b) CBL and Hc in late summer in 2009; (c) SBL and Hc in midsummer in 2012; (d) SBL and Hc in late summer in 2009.

The relationship between (a) CBL and Hc in midsummer in 2012; (b) CBL and Hc in late summer in 2009; (c) SBL and Hc in midsummer in 2012; (d) SBL and Hc in late summer in 2009.

The vertical structure of ABL’s horizontal wind field on (a) July 4, 2012, and (b) August 30, 2009.

The vertical structure of ABL’s horizontal wind field on (a) July 4, 2012, and (b) August 30, 2009.

The vertical variation of divergence field during the observation period (a) midsummer and (b) late summer.

The vertical variation of divergence field during the observation period (a) midsummer and (b) late summer.

Atmospheric circulation in (a)-(b) 500 hPa and 700 hPa at 0600 UTC on July 4 and (c)-(d) 500 hPa and 700 hPa at 0600 UTC on August 30 (solid line: geopotential height, unit: gpm; dotted line: temperature, unit: Celsius degree; +: observation site).

Atmospheric circulation in (a)-(b) 500 hPa and 700 hPa at 0600 UTC on July 4 and (c)-(d) 500 hPa and 700 hPa at 0600 UTC on August 30 (solid line: geopotential height, unit: gpm; dotted line: temperature, unit: Celsius degree; +: observation site).

Atmospheric circulation in (a)-(b) 500 hPa and 700 hPa at 0600 UTC on July 4 and (c)-(d) 500 hPa and 700 hPa at 0600 UTC on August 30 (solid line: geopotential height, unit: gpm; dotted line: temperature, unit: Celsius degree; +: observation site).

Atmospheric circulation in (a)-(b) 500 hPa and 700 hPa at 0600 UTC on July 4 and (c)-(d) 500 hPa and 700 hPa at 0600 UTC on August 30 (solid line: geopotential height, unit: gpm; dotted line: temperature, unit: Celsius degree; +: observation site).

通讯作者

Jiangang Li.Institute of Desert Meteorology, CMA, Urumqi 830002, China, cma.gov.cn;Center of Central Asian Atmospheric Science Research, Urumqi 830002, China.shzljg_qxj@163.com

推荐引用方式

Yinhuan Ao,Jiangang Li,Zhaoguo Li,Shihua Lyu,Cailian Jiang,Minzhong Wang. Relation between the Atmospheric Boundary Layer and Impact Factors under Severe Surface Thermal Conditions. Advances in Meteorology ,Vol.2017(2017)

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