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| 1 | On the atmospheric movement and the imbalance of observed and calculated energy in the surface layer显示文摘Based on existing researches,here we theoretically summarized the characteristics of the atmospheric movement and turbulent transport of energy and substance in the surface layer as well as the ideal and the actual models for the turbulent transport.Then,using the data observed with eddy covariance at the semiarid climate and environment monitoring station(SACOL) in Lanzhou University from May to October during four consecutive years(September 2006-August 2010),we conducted a detailed analysis of the turbulent transport in the surface layer,through introducing the relative vertical turbulence intensity to characterize the turbulence strength,RIw=wn(wn+U),and also by adopting the method for controlling data quality at different levels.Our conclusions are:(1) The turbulent transport of energy and substance in the surface layer must obey the law of conservation of energy and the law of conservation of matter,the observed and calculated energy in the surface layer must be balanced,or closed in theory,but the actual observed and calculated energy just approximates the ideal in some degree and is difficult to achieve the energy balance.(2) The energy closure rate depends much on the atmospheric state in the surface layer,and the energy closure rate increases generally with the relative vertical turbulence intensity.(3) By the way of controlling data quality at different levels,it is found that the degree of data quality control can affect the closure rate,but it does not change the fact that the energy closure rate depends on the atmospheric state.(4) The calculation method of surface soil heat flux can affect energy closure rate,but does not change its dependence on the atmospheric state. | ZUO HongChao XIAO Xia YANG QiDong DONG LongXiang CHEN JiWei WANG ShuJin | 2012 | Science China Earth Sciences2012，55，9： | 5 |
| 2 | Simulation analysis on characteristics of land surface over western Qinghai-Xizang Plateau during freez-ing-thawing period显示文摘Using the Global Energy and Water Cycle Experiment-Asian Monsoon-Tibet Plateau Experiment (GAME-Tibet) observa-tional data-from October 2002 through September 2003-of Gaize in the western Qinghai-Xizang Plateau (QXP),the land-surface characteristics of the Qinghai-Xizang Plateau are simulated by the improved land-surface model Common Land Model (CoLM).The results show that CoLM can reproduce the land-surface characteristics of plateau areas well.In the sur-face-energy balance of the western QXP in the winter half year,the sensible heat (SH) flux constituted the dominant energy,and the latent heat (LH,here and after) flux is very small.Although the LH flux nearly equals zero in freezing season,it cannot be ig-nored during the period of freezing-thawing in QXP.In the transition season from midto late-May,the frequent phase change of soil water that is caused by the freezing-thawing process leads to the increase of LH flux and decrease of the Bowen ratio.The simulation results also indicate that the changes of surface effective heat fluxes (SH and LH flux) are associated with precipitation and the frequent change between freezing and thawing processes in soil surface. | ChengHai Wang,Rui Shi,Yang Cui,HongChao Zuo College of Atmospheric Sciences,Lanzhou University.No.222,South Tianshui Road,Lanzhou,Gansu 730000,China. | 2009 | Research in Cold and Arid Regions2009，1，4： | 3 |
| 3 | An overview of the Semi-arid Climate and Environment Research Observatory over the Loess Plateau显示文摘 | Jianping Huang Wu Zhang Jinqing Zuo Jianrong Bi Jinsen Shi Xin Wang Zhoulin Chang Zhongwei Huang Su Yang Beidou Zhang Guoyin Wang Guanghong Feng Jiuyi Yuan Lei Zhang Hongchao Zuo Shigong Wang Congbin Fu Chou Jifan | | 0，2008，： | 1 |
| 4 | Climate change trend and its relationship to change of pan evaporation in China in recent 40 years显示文摘 | Zuo Hongchao Li Dongliang Hu Yinqiao | 2005 | Chinese Sci Bull2005，50，11： | 1 |
| 5 | Surface water and aerosol spatiotemporal dynamics and influence mechanisms over drylands显示文摘Under the background of global warming and excessive human activities,much surface water in drylands is experiencing rapid degradation or shrinkage in recent years.The shrinkage of surface water,especially the degradation of lakes and their adjacent wetlands in drylands,may lead to the emergence of new salt dust storm hotspots,which causes greater danger.In this paper,based on high spatial resolution global surface water(GSW)and multiangle implementation of atmospheric correction(MAIAC)AOD data,we systematically analyze the dynamic characteristics of surface water and aerosols in typical drylands(Central Asia,CA)between 2000 and 2018.Simultaneously,combined with auxiliary environment variables,we explore the driving mechanisms of surface water on the regional salt/sand aerosols on different spatial scales.The results show that the seasonal surface water features an increasing trend,especially a more dramatic increase after 2015,and the permanent surface water indicates an overall decrease,with nearly 54.367%at risk of receding and drying up.In typical lakes(Aral Sea and Ebinur Lake),the interannual change feature of the surface water area(WA)is that a continuous decrease during the study period occurs in Aral Sea area,yet a significant improvement has occurred in Ebinur Lake after 2015,and the degradation of Ebinur Lake takes place later and its recovery earlier than Aral Sea.The aerosol optical depth(AOD)in CA shows obvious seasonal variation,with the largest in spring(0.192±0173),next in summer(0.169±0.106),and the smallest in autumn(0.123±0.065).The interannual variation of AOD exhibits an increase from 2000 to 2018 in CA,with high AOD areas mainly concentrated in the Taklamakan Desert and some lake beds resulting from lake degradation,including Aral Sea and Ebinur Lake.The AOD holds a similar trend between Aral Sea and Ebinur Lake on an interannual scale.And the AOD over Ebinur Lake is lower than that over Aral Sea in magnitude and lags behind in reaching the peak compared with Aral Sea.The WA change can significantly affect aerosol variation directly or indirectly on the aerosol load or mode size,but there are obvious differences in the driving mechanisms,acting paths,and influence magnitude of WA on aerosols on different spatial scales.In addition,the increase of WA can significantly directly suppress the increase ofÅngström exponent(AE),and the effects of WA on AOD are realized majorly by an indirect approach.From the typical lake perspective,the effects of WA on aerosol in Aral Sea are achieved via an indirect path;and the decrease of WA can indirectly promote the AOD rise,and directly stimulate the AE growth in Ebinur Lake. | Xiangyue Chen Hongchao Zuo Wenpeng Wang Jikai Duan Mingheng Chang Jingzhe Wang | 2023 | Geoscience Frontiers2023，14，2： | 0 |
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