Assessment of two intense dust storm characteristics over Indo – Gangetic basin and their radiative impacts: A case study

Tiwari, S.; Kumar, Akhilesh; Pratap, Vineet; Singh, Abhay Kumar

doi:10.1016/j.atmosres.2019.05.011

Cited by 54 publications

(32 citation statements)

References 123 publications

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“…Positive ARF ATM values, ranging from +20.24 W·m −2 on a non‐dust day (7 May) to +125.55 W·m −2 on a dust day (4 May), indicate the significant absorption of solar radiation that causes a net warming effect in the period of the dust event. Generally, similar results were obtained in the earlier studies since ARF ATM over the Indo‐Gangetic Basin (India) during dust‐storms of 1–7 May and 14 June 2018 was +124 and +84 W·m −2 (Tiwari et al ., 2019). In Beijing, the ARF BOA values during days of dust ranged between −166.66 and −236.02 W·m −2 , ARF TOA between −65.88 and −115.65 W·m −2 , and ARF ATM between +86.72 and +133.67 W·m −2 (Yu et al ., 2016).…”

Section: Resultsmentioning

confidence: 99%

“…Similar HRs were registered in earlier studies during major dust days in Beijing and were 2.44–3.76 K·day −1 (Yu et al ., 2016). In Kanpur, in the period of sandstorms in May and June 2018, HRs were 1.51–3.88 and 0.9–1.88 K·day −1 (Tiwari et al ., 2019). It was proven that the atmospheric heating due to absorbing aerosols may lead to the decrease of cloud cover and planetary albedo that may cause net warming on the surface (Ackerman et al ., 2000).…”

Section: Resultsmentioning

confidence: 99%

“…Aerosol particles, including natural and anthropogenic aerosols, have a significant impact on global and regional climate change (Ginzburg et al ., 2009; Li et al ., 2019). Aerosol particles directly interact with solar and terrestrial radiation by means of scattering and absorption and may also indirectly affect the dynamics and microstructure of clouds (Ackerman et al ., 2000; Kim and Ramanathan, 2008; Tiwari et al ., 2019). In addition, aerosols can have a significant impact on air quality, atmospheric visibility and human health, thus affecting social and economic activity (Wan et al ., 2011; Hao and Liu, 2016; Guo et al ., 2019; Kaskaoutis et al ., 2019; Biswas et al, 2020; Filonchyk et al ., 2020a).…”

Section: Introductionmentioning

confidence: 99%

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Air pollution in the Gobi Desert region: Analysis of dust‐storm events

Filonchyk

Peterson

Hurynovich

2021

Quart J Royal Meteoro Soc

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Air pollutants in nine cities of the Gobi Desert region are examined in this study. Mean concentrations of PM2.5 and PM10, retrieved from ground‐based air quality monitoring stations, were 36.2 ± 23.7 and 97.3 ± 84.5 μg·m−3, respectively. The highest concentrations of pollutants were in spring and winter. This can be explained by wind‐borne dust in the spring and emissions from domestic sources during the winter heating season. The highest PM2.5 and PM10 concentrations were registered in a period of dust‐storm activity with values of 343 μg·m−3 and 1,642 μg·m−3. Generally, clean continental (CC) was the dominant aerosol type (73.9%), followed by mixed (MX) aerosol type (20.4%) with insignificant contribution of clean marine (CM) (2.1%), urban/industrial and biomass burning (UI/BB) (0.9%) and desert dust (DD) (2.7%) aerosol types. The various measures of pollution retrieved from AERONET stations, including aerosol optical depth (AOD), Ångström exponent (AE), asymmetry parameter (AP), single scattering albedo (SSA) and aerosol volume size distribution (AVSD), specify the content of coarse aerosol fractions in the period of dust activity. The aerosol radiative forcing at the bottom of the atmosphere (ARFBOA) and the top of the atmosphere (ARFTOA) during dust days were estimated to be −115.76 and −241.31 W·m−2, with a corresponding heating rate of 3.52 K·day−1. According to the backward and forward trajectories of air masses, the dust cloud moved to the east and southeast from the epicentre, affecting the eastern and the central parts of the country. This study may advise environmental policy, as it showed how controlling causes of pollution can improve air quality.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Air pollution in the Gobi Desert region: Analysis of dust‐storm events

Filonchyk

Peterson

Hurynovich

2021

Quart J Royal Meteoro Soc

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“…given in equation 2. The atmospheric heating rate is considered to be a sign of climate implication of aerosols and as calculated from RFatm (Singh et al, 2016;Tiwari et al, 2019;Tripathi et al, 2007)…”

Section: Changes In Radiative Forcing and Heating Ratementioning

confidence: 99%

Assessment of Recent Changes in Dust over South Asia Using RegCM

Acharya¹,

Sk²,

Vinoj³

2021

Preprint

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Pre-monsoon dust aerosols over Indian regions are closely linked to the monsoon dynamics and Indian summer monsoon rainfall. Past observational studies have shown a decline in dust loading over the Indian landmass potentially caused by changing rainfall patterns over the desert regions. Such changes are expected to have far reaching impact on regional energy balance and monsoon rainfall. Using a regional climate-chemistry model, RegCM4.5 with an updated land module, we have simulated the long-term (2001-2015) changes in dust over the arid and semi-arid dust source regions of the North-Western part of the sub-continent. It is found that the area-averaged dust aerosol optical depth (AOD) over the arid and semi-arid desert regions has declined by 17% since the start of this millennium. The rainfall over these regions exhibits a positive trend of 0.1 mm day-1year-1 and a net increase of > 50%. The wet deposition is found to be dominant and ~5 fold larger in magnitude over dry deposition and exhibits total changes of ~ 79 % and 48% in the trends in atmospheric dust. As a response, significant change in the surface (11%), top of the atmosphere radiative forcing (7%), and widespread atmospheric cooling are observed in short wave domain of radiation spectrum, over the Northern part of the Indian landmass. Such quantification and long term change studies are necessary for understanding the regional climate change and the water cycle.

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“…Além do impacto bioquímico, o impacto climático é um importante aspecto a ser investigado, seja nos efeitos diretos ou indiretos dos aerossóis. Diversos estudos já investigaram estes impactos (Li et al, 2004;Kedia et al, 2018;Tiwari et al 2019;Singh et al, 2016), e o presente estudo pretende contribuir para a compreensão deste fenômeno.…”

Section: Transporte De Aerossóis Dounclassified

Impactos do transporte de aerossóis do deserto do Saara sobre o balanço de radiação sobre o Atlântico tropical e a Amazônia

Correa¹

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Agradecimento especial à minha orientadora, Prof. Dra. Marcia Akemi Yamasoe, pela orientação, paciência, apoio, conselhos e todo conhecimento transmitido. A todos os professores do Departamento de Meteorologia, que contribuíram enormemente à minha formação. Aos meus pais Ana Cristina e Carlos Magno, e à minha avó Mercídia (em memória), que foram e ainda são minhas bases e maior apoio de todos. Tudo é por eles e graças a eles. Aos amigos que eu encontrei durante o mestrado, Humberto, Franciele, Marcos, Elen, Andressa, Erick, Paulo e todos os outros que me apoiaram, torceram por mim e são parte de boa parte das minhas melhores memórias desses anos. Aos meus amigos e colegas do Laboratório de Radiação e Aerossóis Atmosféricos, pelo apoio e colaboração durante esses anos. Aos meus amigos do time de flag football Politécnica Rats, onde eu encontrei uma família durante os anos de mestrado. Aos meus amigos e familiares que, mesmo do Amapá e do Pará, nunca me deixaram esquecer que eu nunca estive sozinho mesmo nos momentos mais difíceis. À Universidade de São Paulo, por me proporcionar uma experiência acadêmica e pessoal incrível durante o mestrado. À CAPES pelo apoio financeiro. discussões sobre a tradução dos impactos radiativos em impactos termodinâmicos e dinâmicos na atmosfera, que refletem no tempo e no clima. Palavras-chave: Aerossóis, deserto do Saara, Amazônia, balanço de radiação, forçamento radiativo.

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Assessment of two intense dust storm characteristics over Indo – Gangetic basin and their radiative impacts: A case study

Cited by 54 publications

References 123 publications

Air pollution in the Gobi Desert region: Analysis of dust‐storm events

Air pollution in the Gobi Desert region: Analysis of dust‐storm events

Assessment of Recent Changes in Dust over South Asia Using RegCM

Impactos do transporte de aerossóis do deserto do Saara sobre o balanço de radiação sobre o Atlântico tropical e a Amazônia

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