Production and Emissions of Marine Isoprene and Monoterpenes: A Review Tập 2010 Số 1 - 2010
Stephanie L. Shaw, B. Gantt, N. Meskhidze
Terrestrial and marine photosynthetic organisms emit trace gases, including
isoprene and monoterpenes. The resulting emissions can impact the atmosphere
through oxidative chemistry and formation of secondary organic aerosol. Large
uncertainty exists as to the magnitude of the marine sources of these compounds,
their controlling factors, and contribution to marine aerosol. In recent years,
the numb... hiện toàn bộ
Spatial Interpolation of Daily Rainfall Data for Local Climate Impact Assessment over Greater Sydney Region Tập 2015 - Trang 1-12 - 2015
Xihua Yang, Xiaojin Xie, De Li Liu, Fei Ji, Lin Wang
This paper presents spatial interpolation techniques to produce finer-scale
daily rainfall data from regional climate modeling. Four common interpolation
techniques (ANUDEM, Spline, IDW, and Kriging) were compared and assessed against
station rainfall data and modeled rainfall. The performance was assessed by the
mean absolute error (MAE), mean relative error (MRE), root mean squared error
(RMSE),... hiện toàn bộ
Analysis of the Influence of Precipitation and Wind on PM2.5 and PM10 in the Atmosphere Tập 2020 - Trang 1-13 - 2020
Zhen Liu, Luming Shen, Chengyu Yan, Jianshuang Du, Li Yang, Hui Zhao
In this paper, hourly observations of precipitation, wind, and PM2.5 and PM10
concentrations in Qinhuangdao from 2016 to 2018 were used to study the effects
of precipitation and wind on PM2.5 and PM10 concentrations. The results show
that precipitation has a certain wet scavenging effect on PM2.5 and PM10, and
the scavenging effect on PM10 is greater than that on PM2.5. Precipitation above
moderat... hiện toàn bộ
Statistical Downscaling of Temperature with the Random Forest Model Tập 2017 - Trang 1-11 - 2017
Bo Pang, Jiajia Yue, Gang Zhao, Zongxue Xu
The issues with downscaling the outputs of a global climate model (GCM) to a
regional scale that are appropriate to hydrological impact studies are
investigated using the random forest (RF) model, which has been shown to be
superior for large dataset analysis and variable importance evaluation. The RF
is proposed for downscaling daily mean temperature in the Pearl River basin in
southern China. Fo... hiện toàn bộ
Statistical Downscaling of ERA-Interim Forecast Precipitation Data in Complex Terrain Using LASSO Algorithm Tập 2014 - Trang 1-16 - 2014
Lu Gao, Karsten Schulz, Matthias Bernhardt
Precipitation is an essential input parameter for land surface models because it
controls a large variety of environmental processes. However, the commonly
sparse meteorological networks in complex terrains are unable to provide the
information needed for many applications. Therefore, downscaling local
precipitation is necessary. To this end, a new machine learning method, LASSO
algorithm (least a... hiện toàn bộ
Accumulated Mixed Precipitation Estimation Using Measurements from Multiple Microwave Links Tập 2015 - Trang 1-9 - 2015
Jonatan Ostrometzky, Dani Cherkassky, H. Messer
Recently, microwave communication networks have been shown to be valuable tools
for rainfall monitoring, based on the well-known Power-Law which relates
rain-rate to attenuation in microwave frequencies. However, once precipitation
other than pure rain exists (e.g., snow), the Power-Law relation is no longer
accurate. In this paper we propose a model which relates the induced attenuation
to rain, ... hiện toàn bộ
Pedestrian Exposure to Air Pollution in Cities: Modeling the Effect of Roadside Trees Tập 2013 - Trang 1-7 - 2013
Jorge H. Amorim, Joana Valente, P. Cascão, Vera Rodrigues, Cláudia Pimentel, Ana Isabel Miranda, C. Borrego
The exposure of students to traffic-emitted carbon monoxide (CO) in their daily
walk to school is evaluated, with a particular emphasis on the effect of trees
and route choice. The study is focused on the city centre of Aveiro, in central
Portugal. Time evolution of the georeferenced location of an individual is
tracked with a GPS for different alternative walking routes to a school. Spatial
distr... hiện toàn bộ
Annual Patterns of Atmospheric Pollutions and Episodes over Cairo Egypt Tập 2013 - Trang 1-11 - 2013
Y. AboEl Fetouh, Hesham El‐Askary, M. El Raey, Mohamed Allali, William A. Sprigg, M. Kafatos
The Nile Delta major cities, particularly Cairo, experienced stagnant air
pollution episodes, known as Black Cloud, every year over the past decade during
autumn. Low-elevated thermal inversion layers play a crucial role in
intensifying pollution impacts. Carbon monoxide, ozone, atmospheric temperature,
water vapor, and methane measurements from the tropospheric emission
spectrometer (TES) on boar... hiện toàn bộ
Climate Change Impacts on Winter Wheat Yield in Northern China Tập 2019 - Trang 1-12 - 2019
Xiu Geng, Fang Wang, Wei Ren, Zhixin Hao
Exploring the impacts of climate change on agriculture is one of important
topics with respect to climate change. We quantitatively examined the impacts of
climate change on winter wheat yield in Northern China using the Cobb–Douglas
production function. Utilizing time-series data of agricultural production and
meteorological observations from 1981 to 2016, the impacts of climatic factors
on wheat... hiện toàn bộ