Potential impacts of aerosol–land–atmosphere interactions on the Indian monsoonal rainfall characteristics

Niyogi, Dev; Chang, Hsin I.; Chen, Fei; Gu, Lianhong; Kumar, Anil; Menon, Surabi; Pielke, Roger A.

doi:10.1007/s11069-006-9085-y

Cited by 64 publications

(30 citation statements)

References 29 publications

(46 reference statements)

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“…These values need to be treated with caution as the aerosol issue is complex and can cause both warming and cooling depending on the single scattering albedo and aerosol speciation [ Menon et al , 2002]. Niyogi et al [2007a] reviewed the Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depths and the Aerosol Robotics Network (AERONET) optical depth data over Kanpur, India. Their results indicate that the aerosol plumes are transitory with optical depths ranging around 0.5 for majority of the period and going in excess of 2 for few occasions.…”

Section: Discussion and Concluding Remarksmentioning

confidence: 99%

Impacts of the agricultural Green Revolution–induced land use changes on air temperatures in India

et al. 2007

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[1] India has one of the most intensive and spatially extensive irrigation systems in the world developed during the1960s under the agricultural Green Revolution (GR). Irrigated landscapes can alter the regional surface energy balance and its associated temperature, humidity, and climate features. The main objective of this study is to determine the impacts of increased irrigation on long-term temperature trends. An analysis of the monthly climatological surface data sets at the regional level over India showed that agriculture and irrigation can substantially reduce the air temperature over different regions during the growing season. The processes associated with agriculture and irrigation-induced feedback are further diagnosed using a column radiation-boundary layer model coupled to a detailed land surface/hydrology scheme, and 3-D simulations using a Regional Atmospheric Modeling System. Both the modeling and observational analysis provide evidence that during the growing season, irrigation and agricultural activity are significantly modulating the surface temperatures over the Indian subcontinent. Therefore irrigation and agricultural impacts, along with land use change, and aerosol feedbacks need to be considered in regional and global modeling studies for climate change assessments.

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Section: Discussion and Concluding Remarksmentioning

confidence: 99%

Impacts of the agricultural Green Revolution–induced land use changes on air temperatures in India

et al. 2007

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“…Interestingly, all of these hypotheses are supported by different models, but none of the models considers the recent changes in LULC over India. Land surface feedback to the atmosphere plays a major role in climate systems, as reported in various studies1213141516 . Niyogi et al 17 indicated possible reductions to the Indian monsoon from changes in land surface.…”

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confidence: 94%

Weakening of Indian Summer Monsoon Rainfall due to Changes in Land Use Land Cover

Paul

Ghosh

Oglesby

et al. 2016

Sci Rep

183

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Weakening of Indian summer monsoon rainfall (ISMR) is traditionally linked with large-scale perturbations and circulations. However, the impacts of local changes in land use and land cover (LULC) on ISMR have yet to be explored. Here, we analyzed this topic using the regional Weather Research and Forecasting model with European Center for Medium range Weather Forecast (ECMWF) reanalysis data for the years 2000–2010 as a boundary condition and with LULC data from 1987 and 2005. The differences in LULC between 1987 and 2005 showed deforestation with conversion of forest land to crop land, though the magnitude of such conversion is uncertain because of the coarse resolution of satellite images and use of differential sources and methods for data extraction. We performed a sensitivity analysis to understand the impacts of large-scale deforestation in India on monsoon precipitation and found such impacts are similar to the observed changes in terms of spatial patterns and magnitude. We found that deforestation results in weakening of the ISMR because of the decrease in evapotranspiration and subsequent decrease in the recycled component of precipitation.

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“…Global warming has altered spatial patterns of precipitation and cloudiness on a global scale (Rind et al, 1990;Kirschbaum and Fischlin, 1995). Meanwhile, volcanic eruptions and air pollution have changed atmospheric aerosol content (Niyogi et al, 2007;Farquhar and Roderick, 2008). These changes in cloudiness and atmospheric aerosol content will likely affect the carbon sink function of terrestrial ecosystems in the future.…”

Section: Introductionmentioning

confidence: 99%

Impact of cloudiness on net ecosystem exchange of carbon dioxide in different types of forest ecosystems in China

Zhang

et al. 2010

Biogeosciences

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Abstract. Clouds can significantly affect carbon exchange process between forest ecosystems and the atmosphere by influencing the quantity and quality of solar radiation received by ecosystem's surface and other environmental factors. In this study, we analyzed the effects of cloudiness on net ecosystem exchange of carbon dioxide (NEE) in a temperate broad-leaved Korean pine mixed forest at Changbaishan (CBS) and a subtropical evergreen broad-leaved forest at Dinghushan (DHS), based on the flux data obtained during June-August from 2003 to 2006. The results showed that the response of NEE of forest ecosystems to photosynthetically active radiation (PAR) differed under clear skies and cloudy skies. Compared with clear skies, the light-saturated maximum photosynthetic rate (P ec,max ) at CBS under cloudy skies during mid-growing season (from June to August) increased by 34%, 25%, 4% and 11% in 2003, 2004, 2005 and 2006, respectively. In contrast, P ec,max of the forest ecosystem at DHS was higher under clear skies than under cloudy skies from 2004 to 2006. When the clearness index (k t ) ranged between 0.4 and 0.6, the NEE reached its maximum at both CBS and DHS. However, the NEE decreased more dramatically at CBS than at DHS when k t exceeded 0.6. The results indicate that cloudy sky conditions are beneficial to net carbon uptake in the temperate forest ecosystem and the subtropical forest ecosystem. Under clear skies, vapor pressure deficit (VPD) and air temperature increased due to strong light. These environmental conditions led to greater decrease in gross ecosystem photosynthesis (GEP) and greater increase in ecosystem respiration (R e ) at CBS than at DHS. As a result, clear sky conditions caused more reduction of NEE in the temperate forest ecosystem than in the subtropical forest ecosystem. The response of NEE of Correspondence to: G.-R. Yu (yugr@igsnrr.ac.cn) different forest ecosystems to the changes in cloudiness is an important factor that should be included in evaluating regional carbon budgets under climate change conditions.

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Potential impacts of aerosol–land–atmosphere interactions on the Indian monsoonal rainfall characteristics

Cited by 64 publications

References 29 publications

Impacts of the agricultural Green Revolution–induced land use changes on air temperatures in India

Impacts of the agricultural Green Revolution–induced land use changes on air temperatures in India

Weakening of Indian Summer Monsoon Rainfall due to Changes in Land Use Land Cover

Impact of cloudiness on net ecosystem exchange of carbon dioxide in different types of forest ecosystems in China

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