Atmosfera最新文献_第9页

Economic disparities in pollution-related mortality in three municipalities of the Metropolitan Area of the Valley of Mexico 墨西哥河谷大都会区三个市镇与污染相关死亡率的经济差异

IF 1.4 4区地球科学

Atmosfera Pub Date : 2021-03-15 DOI: 10.20937/ATM.52962

Alejandro Camargo, A. Bohara, José Mario Herrera Ramos

{"title":"Economic disparities in pollution-related mortality in three municipalities of the Metropolitan Area of the Valley of Mexico","authors":"Alejandro Camargo, A. Bohara, José Mario Herrera Ramos","doi":"10.20937/ATM.52962","DOIUrl":"https://doi.org/10.20937/ATM.52962","url":null,"abstract":"This study explored the nature of the health risk in the population of three municipalities of the Metropolitan Area of the Valley of Mexico (MAVM) by means of an empirical analysis of the health effects of air pollution and temperature variation. Based on the environmental justice theory, we asked whether, in unequal socioeconomic municipalities of the MAVM, the association between concentration and mortality depends on socioeconomic disparities. We differ from what has usually been done on these studies to establish the relationship between and mortality, by using a state-space model, instead of the Poisson regression model. The state-space model allows us to estimate the size of the unobserved at-risk population, its hazard rate, the life expectancy of individuals in that population, and the effect of changes in environmental conditions on that life expectancy. Our results show a lower hazard rate in the wealthy municipality, as compared to the higher hazard rate in the poor one. The lower hazard rate of the wealthy municipality extends life expectancy and enhances the likelihood of inhabitants staying long-lasting within the population at risk, thus increasing the size of that population, as compared to the population at risk in the poor municipality, whose members show a lower life expectancy. Thus, the smaller the at-risk population, the sicker its average member and, therefore, the smaller the impact on long-term mortality. Our study examines how health disparities play out regionally could provide information to propose public health policy initiatives that might improve living conditions among different communities.","PeriodicalId":55576,"journal":{"name":"Atmosfera","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48959358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of network theory to study spatio-temporal evolution in the weekend effect in urban areas 基于网络理论的城市周末效应时空演化研究

IF 1.4 4区地球科学

Atmosfera Pub Date : 2021-02-22 DOI: 10.20937/ATM.52993

I. Hernández-Paniagua, Rodrigo Lopez Farias, J. Corpus

{"title":"Application of network theory to study spatio-temporal evolution in the weekend effect in urban areas","authors":"I. Hernández-Paniagua, Rodrigo Lopez Farias, J. Corpus","doi":"10.20937/ATM.52993","DOIUrl":"https://doi.org/10.20937/ATM.52993","url":null,"abstract":"The occurrence of higher ground-level O 3 concentrations on weekends rather than on weekdays, despite reduced anthropogenic activity in urban areas, is known as the O 3 weekend effect (OWE). Here, we present an approach to analyse OWE spatio-temporal variations in urban areas, integrated by the trend, prediction and network representation. We used data from ten monitoring sites geographically distributed within the Mexico City Metropolitan Area (MCMA) recorded during 1994-2018. The OWE occurrence within the MCMA ranged typically between 40 and 60 % of the total weeks per year. The annual differences between weekday and weekend O 3 peaks (magnitudes) showed were most significant on Sundays. Naive, Linear and Auto-regressive Integrated Moving Average models were tested for predicting the OWE annual occurrences and magnitudes. There was no single model that outperformed significantly for predicting OWE at all sites. The proposed concept of generalised OWE ( GOWE ) implies that at least half of the sites under study exhibited simultaneous OWE occurrence. GOWE is represented as a network and its integration with prediction models is useful to determinate the OWE spread over the MCMA in the following years. The GOWE occurrence showed an increasing trend interpreted as the spread of VOC-limited conditions over most of the MCMA. Predicted data suggest that, with the current emission control policies, the GOWE will continue occurring. The integrated methodology presented permits the acquisition of valuable insights into the design of potential air quality control strategies.","PeriodicalId":55576,"journal":{"name":"Atmosfera","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89311629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Negative Impact of Biomass Burning and the Orinoco Low-Level Jet on the Air Quality of the Orinoco River Basin 生物质燃烧和奥里诺科河低空急流对奥里诺科江流域空气质量的负面影响

IF 1.4 4区地球科学

Atmosfera Pub Date : 2021-02-12 DOI: 10.20937/ATM.52979

C. Rodriguez-Gomez, Ghisliane Echeverry, A. Jaramillo, L. Ladino

{"title":"The Negative Impact of Biomass Burning and the Orinoco Low-Level Jet on the Air Quality of the Orinoco River Basin","authors":"C. Rodriguez-Gomez, Ghisliane Echeverry, A. Jaramillo, L. Ladino","doi":"10.20937/ATM.52979","DOIUrl":"https://doi.org/10.20937/ATM.52979","url":null,"abstract":"Biomass burning (BB) is a common activity in developing countries and has been identified as a serious air pollution threat. The present work evaluates the air quality of the largest town in the extensive Colombian savannas (250,000 km2) for the first time, from measurements over three consecutive years (2017-2020). Although the air quality in Villavicencio is good in terms of PM10 and O3 for most of the year, the pollution levels for both pollutants exceed the World Health Organization recommended limits during the dry season (February to April). The combination of the Orinoco low-level jet (OLLJ) with the BB emissions from the Venezuelan and the Colombian savannas was identified as the main cause of the poor air quality episodes during the dry season in this city. Organic carbon derived from reanalysis was identified as the main component of the high PM10 concentrations during the dry season. However, mineral dust and sea salt particles were also found to play an important role in the poor air quality observed in Villavicencio and likely along the Orinoco river basin region. Finally, between November and March, the OLLJ was found to be an efficient mechanism for the transport of air pollutants from the Atlantic Ocean and the savannas regions in the Orinoco River Basin in Venezuela and Colombia towards southern regions of Colombia, and in some cases, Ecuador.","PeriodicalId":55576,"journal":{"name":"Atmosfera","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44010538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Evaluating the Rate of Atmospheric Dust Deposition in Isfahan Province 伊斯法罕省大气降尘率的评价

IF 1.4 4区地球科学

Atmosfera Pub Date : 2021-02-10 DOI: 10.20937/ATM.52932

F. Motamedi, M. A. Nadoushan, A. Jalalian

引用次数: 0

Domestic Electricity Consumption in Mexican Metropolitan Areas under Climate Change Scenarios 气候变化情景下墨西哥大都市地区的家庭用电量

IF 1.4 4区地球科学

Atmosfera Pub Date : 2021-02-10 DOI: 10.20937/ATM.52902

Adalberto Tejeda Martínez, Irving Rafael Méndez Pérez, D. Pastrana

引用次数: 0

Characteristics of dry-wet changes in Xinjiang based on SPEI index 基于SPEI指数的新疆干湿变化特征

IF 1.4 4区地球科学

Atmosfera Pub Date : 2021-02-10 DOI: 10.20937/ATM.52952

Hui Zhao, Xinguo Li, M. Eziz, Junqiang Yao

{"title":"Characteristics of dry-wet changes in Xinjiang based on SPEI index","authors":"Hui Zhao, Xinguo Li, M. Eziz, Junqiang Yao","doi":"10.20937/ATM.52952","DOIUrl":"https://doi.org/10.20937/ATM.52952","url":null,"abstract":"Based on the monthly observed temperature and precipitation data of 55 meteorological stations in Xinjiang from 1961 to 2015, using the standardized precipitation evapotranspiration index (SPEI) was adopted. The results show that: In recent 55 years, precipitation and temperature in Xinjiang have an increasing trend, with the change rates of 8.90mm/10a and 0.39℃/10a, respectively. The warming characteristics were obviously stronger than that of humidification, forming the spatial and temporal differences and complexity of dry and wet changes. From 1961 to 1987, it was in the alternate period of drought and drought alleviation, and 1987-1996 was in the drought relief period. Among them, 1997 and 2008 were the more serious drought years, and the proportion of drought stations was 82% and 78% respectively. EOF1 reflects that the overall dry and wet changes in the study area were weakening, and there was a drying trend; EOF2 was a reverse change in the northern and Southern Xinjiang; EOF3 shows that the East Tianshan had a drying trend, while the western part of Southern Xinjiang has the trend of drought alleviation. The spectra of wavelet coherence and cross wavelet transform showed that the SPEI values in Xinjiang have resonance periods of different time scales with the Atlantic multi-year intergenerational oscillation (AMO), El Nino Southern Oscillation (ENSO), North Atlantic Oscillation (NAO) and Pacific interdecadal oscillation (PDO), but in different time domain correlation has certain differences, illustrate the atmospheric circulation index was one of the factors influencing the region year SPEI.","PeriodicalId":55576,"journal":{"name":"Atmosfera","volume":"83 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80633519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seasonal variation of atmospheric bulk deposition along an urbanization gradient in Nuevo Leon, Mexico 墨西哥新莱昂市沿城市化梯度的大气整体沉积季节变化

IF 1.4 4区地球科学

Atmosfera Pub Date : 2021-02-10 DOI: 10.20937/ATM.52943

Darithsa Loya González, I. C. Silva, H. Rodŕıguez, Daniel López Serna, J. M. A. Barbosa

{"title":"Seasonal variation of atmospheric bulk deposition along an urbanization gradient in Nuevo Leon, Mexico","authors":"Darithsa Loya González, I. C. Silva, H. Rodŕıguez, Daniel López Serna, J. M. A. Barbosa","doi":"10.20937/ATM.52943","DOIUrl":"https://doi.org/10.20937/ATM.52943","url":null,"abstract":"Bulk deposition was studied along an urbanization gradient in the state of Nuevo Leon, Mexico. During a yearlong period seven sites within the Metropolitan Area of Monterrey (MAM) and two rural sites (Allende and Linares) were monitored, with the purpose of characterizing deposition and identifying possible patterns between sites. A total of 32 rainfall events were collected. An average pH of 7.15 ± 0.02 was found, which indicates the presence of neutralizing substances in rainwater, as well as an average Electrical Conductivity of 153.96 ± 6.83 μS/cm. The annual accumulated deposition follows the descending order Ca> K> Mg> Zn> Fe> Mn> Cu> Cd> Ni and does not show significant differences between urban and rural areas, with the exception of Ca (p = 0.017). The Principal Component Analysis shows that metals (Cu, Zn, Ni, Mn, and Cd) represent an important pathway in the deposition phenomena and this behavior is maintained through the urbanization gradient, which denotes that the rural areas could be connected to the air basin of the MAM. Seasonal deposition showed that Zn, Fe, Cd, Cu, Ni, Mn Ca, and Mg are higher during autumn and K during winter. Enrichment Factors shows that Zn and Cd were highly enriched, Cu and Ni were moderately enriched, and Ca, K, and Mn were not enriched. Finally, backward trajectories for rural sites showed that only for Allende site a possible carry-over of pollutants is observed during the summer, since the wind currents come preferably from the northern part of the MAM.","PeriodicalId":55576,"journal":{"name":"Atmosfera","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47129169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Stratospheric temperature features over Saudi Arabia and their relations with Atlantic SSTs and surface temperatures in winter 冬季沙特阿拉伯上空平流层温度特征及其与大西洋海温和地面温度的关系

IF 1.4 4区地球科学

Atmosfera Pub Date : 2021-01-01 DOI: 10.20937/atm.52937

H. Hasanean, A. Labban

{"title":"Stratospheric temperature features over Saudi Arabia and their relations with Atlantic SSTs and surface temperatures in winter","authors":"H. Hasanean, A. Labban","doi":"10.20937/atm.52937","DOIUrl":"https://doi.org/10.20937/atm.52937","url":null,"abstract":"Stratospheric weather and climate conditions are closely linked to tropospheric conditions. Stratospheric temperature is an important climatic factor regionally and globally. This paper studies temperature trends in the lower stratosphere at 50 hPa (T50), the mid-stratosphere at 30 hPa (T30) and the upper stratosphere at 10 hPa (T10) throughout winter and their impacts on Atlantic Ocean sea surface temperature and Saudi Arabian surface air temperature, SAT, in the period 1950-2019. The T50 trend over Saudi Arabia showed warming in 1959-1992 (first period) and cooling in 1993-2019 (second period). The T30 trend depicted progressive cooling throughout the overall period. The T10 trend revealed cooling overall with significant warming in the first period. Stratospheric temperatures influence climate change. The standard deviation outcomes showed relatively high inconsistencies in stratospheric-temperature time series. Analysis of the nonlinear trend in stratospheric temperature shows significant cooling for T30 and T10. A strong negative relationship exists between T10 and SST over the Atlantic Ocean. T50 indicates a strong negative relationship with the Atlantic multi-decadal oscillation (AMO) and the tropical southern Atlantic (TSA) indices. T30 relates more to the TSA and the northern tropical Atlantic (NTA) indices than T10 and T50. The lead-lag cross-correlation suggests that the SSTs of the Atlantic Ocean are linked to stratospheric temperatures at a zero lag for T10 and after three winter seasons for T50 and T30, with the exception of the TSA, which is linked at a zero lag. SSTs affect stratospheric temperatures as follows: 1) greenhouse gases from SSTs increase tropospheric temperatures while cooling the stratosphere, and 2) SSTs impact the vertical propagation of tropospheric waves entering the stratosphere. SAT/stratospheric temperature coupling occurs in winter, especially in the lower to mid-stratosphere layers.","PeriodicalId":55576,"journal":{"name":"Atmosfera","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67655240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the performance of SWAT and IHACRES in simulation streamflow under different climatic regions in Iran 研究了SWAT和ihaacres在伊朗不同气候区模拟水流中的性能

IF 1.4 4区地球科学

Atmosfera Pub Date : 2020-12-17 DOI: 10.20937/atm.52740

Abazar Esmali, M. Golshan, A. Kavian

引用次数: 7

Diurnal, seasonal and vertical distribution of carbon monoxide levels and their potential sources over a semi-arid region, India 印度半干旱地区一氧化碳水平的日、季节和垂直分布及其潜在来源

IF 1.4 4区地球科学

Atmosfera Pub Date : 2020-12-09 DOI: 10.20937/atm.52808

Rama Gopal Kotalo, E. Busa, Balakrishnaiah Gugamsetty, Raja Obul Reddy Kalluri, Chakradhar Rao Tandule, Lokeswara Reddy Thotli, Manjunatha Chakala, Surya Nagi Reddy Palle

引用次数: 0