A study on the effect of Eurasian snow on the summer monsoon circulation and rainfall using a spectral GCM

Dash, S. K.; Sarthi, P. Parth; Panda, Subrat Kumar

doi:10.1002/joc.1299

Cited by 28 publications

(17 citation statements)

References 14 publications

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“…3b). Because of this, winter and spring snow-depth anomalies tend to have similar features, as do the correlations of winter and spring snow depth with the summer rainfall (Kripalani and Kulkarni 1999;Dash et al 2005). Note, however, that the SWE anomalies have relatively low persistence in the region of western Siberia.…”

Section: B Persistence Of Snow Cover/-depth Anomaliesmentioning

confidence: 78%

“…For example, the correlation pattern of the snow depth with the Indian summer monsoon rainfall shows persistence from November to April (Kripalani and Kulkarni 1999). Composite snowdepth anomalies based on Indian summer rainfall display similar patterns in DJF and MAM (Dash et al 2005). Fasullo (2004) calculated the correlation of snow cover averaged in different regions between winter and spring.…”

Section: B Persistence Of Snow Cover/-depth Anomaliesmentioning

confidence: 99%

“…4). February is the month when the snow depth reaches the largest (Dash et al 2005) and the snow has the maximum coverage (Sankar-Rao et al 1996). April is the time when the snow is melting.…”

Section: Relationship Between Snow Cover and Snow Depthmentioning

confidence: 99%

“…There are numerous empirical studies on the impacts of winter-spring snow cover/mass over Eurasia and the Himalayas on the Indian summer monsoon (Blanford 1884;Walker 1910;Hahn and Shukla 1976;Dey and Bhanu Kumar 1983;Dickson 1984;Khandekar 1991;Parthasarathy and Yang 1995;Sankar-Rao et al 1996;Matsuyama and Masuda 1998;Kripalani et al 1996Kripalani et al , 2003Bamzai and Shukla 1999;Kripalani and Kulkarni 1999;Robock et al 2003;Fasullo 2004;Dash et al 2005;Singh and Oh 2005). Numerical modeling with different atmospheric general circulation models (AGCMs) has been performed to understand the influence of anomalous snow cover/mass on the Indian summer monsoon (Barnett et al 1989;Yasunari et al 1991;Zwiers 1993;Vernekar et al 1995;Douville and Royer 1996;Ose 1996;Yang and Lau 1998;Dong and Valdes 1998;Watanabe and Nitta 1998;Ferranti and Molteni 1999;Bamzai and Marx 2000;Corti et al 2000;Becker et al 2001;Dash et al 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Because the snow anomalies are often opposite over western and eastern Eurasia (Kripalani and Kulkarni 1999;Fasullo 2004;Dash et al 2005), it is not proper to use the whole Eurasian snow as an index. It is unknown which region of snow is most likely related to the East Asian monsoon rainfall.…”

Section: Introductionmentioning

confidence: 99%

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Observed Relationship of Spring and Summer East Asian Rainfall with Winter and Spring Eurasian Snow

2007

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This study investigates the relationship between spring and summer rainfall in East Asia and the preceding winter and spring snow cover/depth over Eurasia, using station rainfall observations, satelliteobserved snow cover, satellite-derived snow water equivalent, and station observations of the number of days of snow cover and snow depth. Correlation analysis shows that snow-depth anomalies can persist from winter to spring whereas snow cover anomalies cannot in most regions of Eurasia. Locally, snow cover and snow-depth anomalies in February are not related in most regions to the north of 50°N, but those anomalies in April display consistent year-to-year variations. The results suggest that the winter snow cover cannot properly represent all the effects of snow and it is necessary to separate the winter and spring snow cover in addressing the snow-monsoon relationship.Spring snow cover in western Siberia is positively correlated with spring rainfall in southern China. The circulation anomalies associated with the western Siberian spring snow cover variations show an apparent wave pattern over the eastern Atlantic through Europe and midlatitude Asia. Spring snow cover over the Tibetan Plateau shows a moderate positive correlation with spring rainfall in southern China. Analysis shows that this correlation includes El Niño-Southern Oscillation (ENSO) effects. In contrast to the Indian summer monsoon rainfall for which the ENSO interferes with the snow effects, the Tibetan Plateau snow cover and ENSO work cooperatively to enhance spring rainfall anomalies in southern China. In comparison, ENSO has larger impacts than the snow on spring rainfall in southern China.

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Section: B Persistence Of Snow Cover/-depth Anomaliesmentioning

confidence: 78%

Section: B Persistence Of Snow Cover/-depth Anomaliesmentioning

confidence: 99%

Section: Relationship Between Snow Cover and Snow Depthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Observed Relationship of Spring and Summer East Asian Rainfall with Winter and Spring Eurasian Snow

2007

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Interdecadal change of Eurasian snow, surface temperature, and atmospheric circulation in the late 1980s

Liu

2015

JGR Atmospheres

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Boreal winter and spring snow cover extent and snow water equivalent over Eurasia experienced an obvious decrease in late 1980s. A concurrent surface warming is observed over the North Atlantic and Eurasia. The present study documents the relationship among the interdecadal changes in snow, surface air temperature, and wind and the plausible reason for this change. Analysis shows that the snow decrease contributes to the temperature increase only in some limited regions and that the surface warming is largely related to the change in atmospheric circulation. The effect of atmospheric circulation change on surface warming is manifested in wind-induced heat advection and cloud-radiation changes. The wind changes over the North Atlantic and Eurasia feature a wave train with an anomalous anticyclone over Europe and anomalous southerly winds over midlatitude east Europe and Asia. The anomalous southerly winds contribute to surface warming through advection of warmer air from lower latitudes. The anomalous anticyclone contributes to surface warming over Europe through anomalous warm advection by bringing warmer air from ocean and enhanced downward shortwave radiation by suppressing upward motion. The wave pattern appears to be connected to equatorial Atlantic warming. Warmer sea surface temperature (SST) in the equatorial Atlantic Ocean enhances convection and induces a lower level anomalous cyclone to the northwest of the SST warming. The role of equatorial North Atlantic SST increase in the formation of the wave train over Eurasia is supported by numerical experiments with an atmospheric general circulation model.

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Change in the spatiotemporal pattern of snowfall during the cold season under climate change in a snow‐dominated region of China

Bai

Shi²,

Shi

et al. 2019

Intl Journal of Climatology

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The spatiotemporal pattern of precipitation is significantly changing with global climate change. Snowfall is a solid phase of precipitation and an important water resource. With two gridded data sets of APHRO (Asia Precipitation‐Highly‐Resolved Observational Data Integration Towards Evaluation of Water Resources) and CN05.1, this study analyses the changes in the spatiotemporal pattern of snowfall in a snow‐dominant region of China from 1961 to 2015. The results indicate the significant increasing trend of winter snowfall in horizontal and altitude dimension in snow‐dominant regions, but the winter snowing season length shortened. For the frequency of snowfall intensity level, light, and heavy snowfall and snowstorms increased, but moderate snowfall showed no change. However, the intensity of extreme snowfall in once‐in‐a‐century was decreasing in all of the snow‐dominant regions. In the altitude dimension, the increasing trend in snow‐dominant conditions was not uniform, which may be related to change in air temperature and water vapour through the vertical atmospheric levels. The upwards trend in snowfall may be caused by the increase of atmospheric water content rather than the change of snowy weather conditions. In addition, the change values of climate indices can also contribute to snowfall increasing in snow‐dominant regions.

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A study on the effect of Eurasian snow on the summer monsoon circulation and rainfall using a spectral GCM

Cited by 28 publications

References 14 publications

Observed Relationship of Spring and Summer East Asian Rainfall with Winter and Spring Eurasian Snow

Observed Relationship of Spring and Summer East Asian Rainfall with Winter and Spring Eurasian Snow

Interdecadal change of Eurasian snow, surface temperature, and atmospheric circulation in the late 1980s

Change in the spatiotemporal pattern of snowfall during the cold season under climate change in a snow‐dominated region of China

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