Results 21 to 30 of about 300,602 (302)

Modeling the Impact of Atmospheric Warming on Staple Crop Growth in China in the 1960s and 2000s

open access: yesAtmosphere, 2020
Responses of crop growth to climate warming are fundamental to future food security. The response of crops to climate change may be subtly different at their growing stages.
Qing Zhang   +4 more
doaj   +1 more source

Chemical characterization and source identification of PM2.5 at multiple sites in the Beijing–Tianjin–Hebei region, China [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
The simultaneous observation and analysis of atmospheric fine particles (PM2.5) on a regional scale is an important approach to develop control strategies for haze pollution.
X. Huang   +13 more
doaj   +1 more source

Turbulent helium gas cell as a new paradigm of daily meteorological fluctuations? [PDF]

open access: yes, 1997
We compare the spectral properties of long meteorological temperature records with laboratory measurements in small convection cells. Surprisingly, the atmospheric boundary layer sampled on a daily scale shares the statistical properties of temperature ...
Harnos, A., Jánosi, I. M., Vattay, G.
core   +2 more sources

Extreme fluctuations of vertical velocity in the unstable atmospheric surface layer [PDF]

open access: yesNonlinear Processes in Geophysics, 2014
In this paper, we propose a new method to extract the extreme fluctuations of vertical velocity in the unstable atmospheric surface layer. Unlike the commonly used conditional sampling analysis, this method defines a threshold by using a systematical ...
L. Liu, F. Hu, X.-L. Cheng
doaj   +1 more source

Overcoming the boundary layer turbulence at Dome C: ground-layer adaptive optics versus tower [PDF]

open access: yes, 2009
The unique atmospheric conditions present at sites such as Dome C on the Antarctic plateau are very favorable for high spatial resolution astronomy. At Dome C, the majority of the optical turbulence is confined to a 30 to 40 m thick stable boundary layer
Ashley, M. C. B.   +4 more
core   +1 more source

Insights into aerosol chemistry during the 2015 China Victory Day parade: results from simultaneous measurements at ground level and 260 m in Beijing [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
Strict emission controls were implemented in Beijing and adjacent provinces to ensure good air quality during the 2015 China Victory Day parade. Here, we conducted synchronous measurements of submicron aerosols (PM1) at ground level and 260 m on a ...
J. Zhao   +11 more
doaj   +1 more source

On the dependence of third- and fourth-order moments on stability in the turbulent boundary layer [PDF]

open access: yes, 2005
In this short review it is suggested that the relationship between third- and fourth-order moments of turbulence in the atmospheric boundary layer depends on stability.
Maurizi, Alberto
core   +3 more sources

Modeling chemistry in and above snow at Summit, Greenland – Part 1: Model description and results [PDF]

open access: yes, 2011
Sun-lit snow is increasingly recognized as a chemical reactor that plays an active role in uptake, transformation, and release of atmospheric trace gases.
Dibb, JE   +6 more
core   +3 more sources

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

open access: yesGeophysical 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   +13 more
doaj   +1 more source

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]

open access: yesAtmospheric 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   +10 more
doaj   +1 more source

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