Results 21 to 30 of about 25,910 (264)

Effects of fertilization and stand age on N₂O and NO emissions from tea plantations: a site-scale study in a subtropical region using a modified biogeochemical model [PDF]

Atmospheric Chemistry and Physics, 2020
To meet increasing demands, tea plantations are rapidly expanding in China. Although the emissions of nitrous oxide (N2O) and nitric oxide (NO) from tea plantations may be substantially influenced by soil pH reduction and intensive nitrogen fertilization,
W. Zhang, Z. Yao, X. Zheng, X. Zheng, C. Liu, R. Wang, K. Wang, S. Li, S. Han, Q. Zuo, J. Shi   +10 more
doaj   +1 more source

A Black Carbon‐Tracer Method for Estimating Cooking Organic Aerosol From Aerosol Mass Spectrometer Measurements

Geophysical Research Letters, 2019
Cooking organic aerosol (COA) constitutes a considerable fraction of organic aerosol (OA) in urban environments, yet it is often challenging to resolve COA in summer through positive matrix factorization of unit mass resolution spectra of OA from aerosol
Yao He, Yele Sun, Qingqing Wang, Wei Zhou, Weiqi Xu, Yunjiang Zhang, Conghui Xie, Jian Zhao, Wei Du, Yanmei Qiu, Lu Lei, Pingqing Fu, Zifa Wang, Douglas R. Worsnop   +13 more
doaj   +1 more source

Impact of emission controls on air quality in Beijing during APEC 2014: lidar ceilometer observations [PDF]

Atmospheric Chemistry and Physics, 2015
The implementation of emission reductions during the 2014 Asia-Pacific Economic Cooperation (APEC) summit provides a valuable opportunity to study air pollution in Beijing.
G. Tang, X. Zhu, B. Hu, J. Xin, L. Wang, C. Münkel, G. Mao, Y. Wang   +7 more
doaj   +1 more source

The Atmospheric Boundary Layer

Eos, Transactions American Geophysical Union, 1995
Since the atmospheric boundary layer governs the transfer of heat, momentum, water, and chemicals between the Earth and the overlying atmosphere, an adequate representation of its behavior is essential for atmospheric models. Interactions between the boundary layer and processes in the free atmosphere—for example large‐scale advection and cumulus ...
openaire   +2 more sources

On The Atmospheric Boundary Layer Flow Modelling [PDF]

PAMM, 2004
AbstractThe paper presents a mathematical and numerical investigation of the flow in the atmospheric boundary layer (ABL) over complex topography. The flow is supposed to be viscous, incompressible, turbulent and stationary. Two different mathematical–numerical approaches are briefly mentioned.
Sládek, I., Kozel, K., Jaňour, Z.
openaire   +2 more sources

Diagnosis of a Regional Thundersnow in Beijing, Tianjin and Hebei in February 2024

应用气象学报
The generation mechanism of extreme snowfall and convective snowfall in Beijing-Tianjin-Hebei region of China from 20 February to 21 February in 2024 are analyzed with high-resolution observations and the fifth-generation European Centre for Medium-Range
Suo Chunnan, Yan Chunwang, Chen Junming, Hua Jiajia, Ma Fenglian, Ji Ce, Sun Mengmeng   +6 more
doaj   +1 more source

S-band and X-band Radar Observation Characteristics of EF2 Tornado at Qingyuan of Baoding in 2021

应用气象学报
Using multiple observations such as S-band radar (SPOL) in Shijiazhuang, X-band phased array radar (XPAR) in Xiong'an, and ground-based encrypted automatic stations, detection features and evolutions of EF2 tornado at Donglü Village, Qingyuan District of
Chen Xuejiao, Hua Jiajia, Pei Yujie, Wang Zhenchao, Liu Shu, Liu Shujun, Wang Fuxia   +6 more
doaj   +1 more source

Haze pollution under a high atmospheric oxidization capacity in summer in Beijing: insights into formation mechanism of atmospheric physicochemical processes [PDF]

Atmospheric Chemistry and Physics, 2020
Under a high atmospheric oxidization capacity, the synergistic effect of the physicochemical processes in the atmospheric boundary layer (ABL) caused summer haze pollution in Beijing.
D. Zhao, D. Zhao, G. Liu, G. Liu, J. Xin, J. Xin, J. Xin, J. Quan, Y. Wang, X. Wang, L. Dai, W. Gao, G. Tang, B. Hu, Y. Ma, X. Wu, L. Wang, Z. Liu, F. Wu   +18 more
doaj   +1 more source

Size-resolved source apportionment of particulate matter in urban Beijing during haze and non-haze episodes [PDF]

Atmospheric Chemistry and Physics, 2016
Additional size-resolved chemical information is needed before the physicochemical characteristics and sources of airborne particles can be understood; however, this information remains unavailable in most regions of China due to lacking measurement ...
S. L. Tian, Y. P. Pan, Y. S. Wang
doaj   +1 more source

Large-scale intermittency in the atmospheric boundary layer [PDF]

Physical Review E, 2007
We find actual evidence, relying upon vorticity time series taken in a high Reynolds number atmospheric experiment, that to a very good approximation the surface boundary layer flow may be described, in a statistical sense and under certain regimes, as an advected ensemble of homogeneous turbulent systems, characterized by a lognormal distribution of ...
Kholmyansky, M., Moriconi, L., Tsinober, A.   +2 more
openaire   +3 more sources