Results 1 to 10 of about 6,501,456 (385)

Update of a biogeochemical model with process-based algorithms to predict ammonia volatilization from fertilized cultivated uplands and rice paddy fields [PDF]

open access: yesBiogeosciences, 2022
Accurate simulation of ammonia (NH3) volatilization from fertilized croplands is crucial to enhancing fertilizer-use efficiency and alleviating environmental pollution.
S. Li   +10 more
doaj   +1 more source

Comparison Experiment for Rainfall Observation of Micro-smart Weather Stations

open access: yes应用气象学报, 2023
In order to enhance the understanding of rainfall observation performance of micro-smart (integrated) weather stations and to promote the application in rainfall observation operations, a comparative experiment for the rainfall observation of radar ...
Wang Zhenchao   +4 more
doaj   +1 more source

Interannual Variations of Water and Carbon Dioxide Fluxes over a Semiarid Alpine Steppe on the Tibetan Plateau

open access: yesAdvances in Meteorology, 2022
Water and carbon exchanges between grassland and the atmosphere are important processes for water balance and carbon balance. Based on eddy covariance observations over a semiarid alpine steppe ecosystem in Bange on the Tibetan Plateau during the growing
Yang Liu   +5 more
doaj   +1 more source

Superfluid Boundary Layer [PDF]

open access: yesPhysical Review Letters, 2017
We model the superfluid flow of liquid helium over the rough surface of a wire (used to experimentally generate turbulence) profiled by atomic force microscopy. Numerical simulations of the Gross-Pitaevskii equation reveal that the sharpest features in the surface induce vortex nucleation both intrinsically (due to the raised local fluid velocity) and ...
Stagg GW, Parker NG, Barenghi CF
openaire   +4 more sources

Characteristics and sources of submicron aerosols above the urban canopy (260 m) in Beijing, China, during the 2014 APEC summit [PDF]

open access: yesAtmospheric Chemistry and Physics, 2015
The megacity of Beijing has experienced frequent severe fine particle pollution during the last decade. Although the sources and formation mechanisms of aerosol particles have been extensively investigated on the basis of ground measurements, real-time ...
C. Chen   +11 more
doaj   +1 more source

Assessing biogeochemical effects and best management practice for a wheat–maize cropping system using the DNDC model [PDF]

open access: yesBiogeosciences, 2014
Contemporary agriculture is shifting from a single-goal to a multi-goal strategy, which in turn requires choosing best management practice (BMP) based on an assessment of the biogeochemical effects of management alternatives.
F. Cui   +5 more
doaj   +1 more source

Characterization of submicron aerosols during a month of serious pollution in Beijing, 2013 [PDF]

open access: yesAtmospheric Chemistry and Physics, 2014
In January 2013, Beijing experienced several serious haze events. To achieve a better understanding of the characteristics, sources and processes of aerosols during this month, an Aerodyne high-resolution time-of-flight aerosol mass spectrometer (HR-ToF ...
J. K. Zhang   +6 more
doaj   +1 more source

Aerosol physicochemical properties and implications for visibility during an intense haze episode during winter in Beijing [PDF]

open access: yesAtmospheric Chemistry and Physics, 2015
The evolution of physical, chemical and optical properties of urban aerosol particles was characterized during an extreme haze episode in Beijing, PRC, from 24 through 31 January 2013 based on in situ measurements. The average mass concentrations of PM1,
Y. H. Wang   +6 more
doaj   +1 more source

Aerosol composition, oxidation properties, and sources in Beijing: results from the 2014 Asia-Pacific Economic Cooperation summit study [PDF]

open access: yesAtmospheric Chemistry and Physics, 2015
The mitigation of air pollution in megacities remains a great challenge because of the complex sources and formation mechanisms of aerosol particles. The 2014 Asia-Pacific Economic Cooperation (APEC) summit in Beijing serves as a unique experiment to ...
W. Q. Xu   +12 more
doaj   +1 more source

Quantifying the Source Contributions to Poor Atmospheric Visibility in Winter over the Central Plains Economic Region in China

open access: yesAtmosphere, 2022
The Central Plains Economic Region (CPER) is one of the most polluted regions in China. Air pollution has caused visibility degradation due to the light extinction of fine particles (PM2.5).
Huiyun Du   +5 more
doaj   +1 more source

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