Results 21 to 30 of about 147,084 (156)

Comparative Analysis of Ozone Pollution Characteristics between Urban Area and Southern Mountainous Area of Urumqi, China

open access: yesAtmosphere, 2023
The difference in ozone (O3) concentration between stations in the urban and southern mountainous areas of Urumqi was explored based on mathematical statistics and comparative analysis of pollutant concentrations.
Cuiyun Zhu   +4 more
doaj   +1 more source

Grain Size Characteristics and Transport Pathways of Surface Sediments in Eastern Pamir Plateau

open access: yesShuitu baochi tongbao, 2022
[Objective] The grain size characteristics and sources of surface sediments in the Eastern Pamir Plateau were analyzed in order to provide a scientific basis for improving the understanding of the sedimentary environment and ecological environment ...
Li Hanlin   +3 more
doaj   +1 more source

A Novel Algorithm for Estimating the Sand Dune Density of the Taklimakan Desert Based on Remote Sensing Data

open access: yesRemote Sensing
The dune density is an important parameter for representing the characteristics of desert geomorphology, providing a precise depiction of the undulating topography of the desert.
Mingyu Wang   +5 more
doaj   +2 more sources

Quantifying the provenance of dune sediments in the Taklimakan Desert using machine learning, multidimensional scaling and sediment source fingerprinting

open access: yes, 2021
Study of windborne sediments in the Taklimakan Desert is of great significance in the context of global change. Much effort has gone into characterizing the Taklimakan dune sediments, but quantitative understanding of the source contributions from the ...
Fan, Y.   +4 more
core   +2 more sources

Factors controlling and variations of CO2 fluxes during the growing season in Gurbantunggut Desert

open access: yesEcological Indicators, 2023
Although previous studies have illustrated the variation of CO2 fluxes in different terrestrial ecosystems, more needs to be reported on desert ecosystems.
Gulnur Amar   +9 more
doaj   +1 more source

Probabilistic 2-meter surface temperature forecasting over Xinjiang based on Bayesian model averaging

open access: yesFrontiers in Earth Science, 2022
Based on Bayesian model averaging (BMA), the suitability and characteristics of the BMA model for forecasting 2-m temperature in Xinjiang of China were analyzed by using the forecast results of the Desert Oasis Gobi Regional Analysis Forecast System ...
Ailiyaer Aihaiti   +8 more
doaj   +1 more source

Evolution law of atmospheric boundary layer in Gurbantünggüt Desert based on reanalysis dataset and in situ observation data

open access: yesHeliyon, 2023
As a special geographical unit on the earth, deserts have certain differences in planetary boundary layer (PBL) characteristics from other surface types.
Yu Wang   +11 more
doaj   +1 more source

Seasonal Variations of the Near-Surface Atmospheric Boundary Layer Structure in China’s Gurbantünggüt Desert

open access: yesAdvances in Meteorology, 2020
As the largest fixed and semifixed desert in China, the Gurbantünggüt Desert has a longperiod of snow in winter and the rapid growth of ephemeral plants in spring, presentingthe obvious seasonal changes in the underlying desert surface type, which could ...
Ali Mamtimin   +6 more
doaj   +1 more source

Unmanned Aerial Vehicle Observations of the Vertical Distribution of Particulate Matter in the Surface Layer of the Taklimakan Desert in China

open access: yesAtmosphere, 2020
Field observations made with unmanned aerial vehicles of the particulate matter (PM) concentration from the ground to a height of 500 m were conducted at Xiaotang and Tazhong in the Taklimakan Desert (TD), China, from 7 to 15 November 2019.
Lili Jin   +7 more
doaj   +1 more source

Impacts of Winter and Summer COVID-19 Lockdowns on Urban Air Quality in Urumqi, Northwest China

open access: yesFrontiers in Environmental Science, 2022
After the COVID-19 pandemic began in 2020, Urumqi, a remote area in northwest China, experienced two lockdowns, in January and July 2020. Based on ground and satellite observations, this study assessed the impacts of these lockdowns on the air quality in
Ali Mamtimin   +25 more
doaj   +1 more source

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