Russian Climate Research in 2015–2018

Мохов, И. И.

doi:10.1134/s0001433820040064

Cited by 22 publications

(1 citation statement)

References 208 publications

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“…With the ongoing global warming, climatic changes in the Arctic are attracting special attention [1,2]. The increase in the average annual near-surface temperature in the Arctic latitudes during last decades is several times higher than the average temperature rise over the planet (so called Arctic amplification) [3,4]. An additional factor contributing to the heating of the Arctic system under global warming is the BC content in the air, which is a component of the submicron aerosol of the atmosphere, which effectively absorbs solar radiation [5].…”

Section: Introductionmentioning

confidence: 99%

Transport of biomass burning products from Siberian wildfires into the Arctic

Ситнов

Мохов²

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The study of the long-range transport of biomass burning products from Siberian wildfires into the Arctic atmosphere during the period of 2000-2019 is presented. An analysis of the characteristics of forest fires over the past 20 years revealed an increase in radiation power of an average Siberian wildfire, which is characterized by a statistically significant linear trend of 1.7 ± 1.0% / year. A joint analysis of fire activity in Siberian forests, as well as the contents of the black carbon (BC) and carbon monoxide (CO) contents in the Arctic atmosphere, indicates that extreme fire events force the development of regional anomalies in BC and CO. Correlation between the anomalies of BC (CO) over the Russian segment of the Arctic and the number of Siberian wildfires is found to be statistically significant at the α = 0.05 level and reach the value r = 0.77 (0.48) during the summer months. Using a linear regression model, an estimate of the sensitivity of changes in the total BC content and in the volume mixing ratio of CO at the 700-hPa level in the 1.910-8 kg⋅m-2 per 1000 fires and 0.4 ppbv per 1000 fires, respectively. The results of a detailed analysis of the long-range BC transport into the Arctic during catastrophic Siberian wildfires in the summer of 2019 are presented. It is shown that the considered episode was conditioned by the features of the large-scale atmospheric circulation characteristic for the atmospheric blocking event.

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Section: Introductionmentioning

confidence: 99%

Transport of biomass burning products from Siberian wildfires into the Arctic

Ситнов

Мохов²

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Estimates of the accuracy and rate of convergence of short-term meteorological forecasts using the regional climate model RegCM4

Tertychnaya,

Khoperskov

2023

E3S Web Conf.

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We use the regional climate model RegCM 4.9 for the territory of Southern Russia to estimate the accuracy of meteorological forecasts. The errors of meteorological and climatic forecasts is due to complex non-equilibrium physicochemical processes in the components of the Earth's geosystem, which are characterized by gasdynamic and thermal instabilities at various spatial scales. A method for assessing the convergence of forecasts based on time series analysis is discussed for various localities. The reliability of forecasts for temperatures up to 1 degree can lie within 5-10 days for the south of the European part of Russia, depending on the predominance of cyclonic or anticyclonic atmospheric movements. The interval of acceptable precipitation forecast, as a rule, does not exceed 2-4 days for an area of about 104km2 and greatly decreases with decreasing area of the region under consideration. The annual volume of precipitation correlates in the cities of Rostov-on-Don and Volgograd at the level of 70 percent with each other. The correlation between the Rostov-on-Don City or the Volgograd City on the one hand, and the cities Astrakhan, Stavropol, Elista on the other hand, turns out to be significantly less, ranging from 30 to 40 percent.

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Changes of the sea ice and snow cover extent associated with temperature changes in the Northern and Southern Hemispheres in recent decades

Мохов

Парфенова²

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Changes in snow cover and sea ice extents associated with temperature changes in the Northern and Southern Hemispheres for the period 1979-2020 are analysed using monthly-mean satellite and reanalysis data. Quantitative estimates of the relationship between the Antarctic and Arctic sea ice and changes in the surface air temperature were obtained. Overall increase of the Antarctic sea ice extent is associated with the regional manifestation of natural multidecadal climate modes with periods of up to several decades (against the background of global warming and a rapid decrease in the extent of sea ice in the Arctic). The results of correlation and cross-wavelet analyses show significant coherence and negative correlation of the surface air temperature in both Arctic and Antarctic with the respective sea ice extent in recent decades. Seasonal and regional features of the snow cover sensitivity to changes in the temperature regime in the Northern Hemisphere for the past four decades are noted. The features of snow cover variability in Eurasia and North America are presented.

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Russian Climate Research in 2015–2018

Cited by 22 publications

References 208 publications

Transport of biomass burning products from Siberian wildfires into the Arctic

Transport of biomass burning products from Siberian wildfires into the Arctic

Estimates of the accuracy and rate of convergence of short-term meteorological forecasts using the regional climate model RegCM4

Changes of the sea ice and snow cover extent associated with temperature changes in the Northern and Southern Hemispheres in recent decades

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