Impact of global warming on the conditions of the Siberian rivers discharge formation

2020 ◽  
Author(s):  
Anastasia Vyazilova ◽  
Alekseev Genrikh ◽  
Kharlanenkova Natalya ◽  
Glok Natalya
Keyword(s):  
Global Warming ◽  
Water Vapor ◽  
Moisture Content ◽  
Arctic Ocean ◽  
Air Temperature ◽  
The Arctic ◽  
Wave Radiation ◽  
Catchment Areas ◽  
Low Latitudes ◽  
The Arctic Ocean

<p> <span>The modern Arctic is becoming warmer and more humid, and the Arctic Ocean is increasingly free of ice in summer. One of the feedbacks of global warming in the arctic part of the climate system is an increase of downward long-wave radiation inflow to the surface of snow and ice due to an increase of the content of water vapor in the atmosphere of the Arctic. The source of the increase of the water vapor content in the arctic atmosphere is the atmospheric branch of the freshwater cycle, including moisture transport from low latitudes and inflow from the ocean surface. Moisture from low latitudes is transferred not only to the Arctic, but also to the adjacent continent of Eurasia, from where its excess is transferred by river flow to the Arctic Ocean. Strengthening of zonal transports of heat and moisture from oceanic regions to continents and meridional transports from low latitudes of the World Ocean to temperate and high latitudes is shown using the proposed indices of the zonal and meridional circulation. The indices were calculated according to the NCEP, ERA-Interim reanalysis data. It has been established that the increase in transports is manifested, in particular, in an increase of air temperature, in an increase of the total moisture content in the atmosphere over the area of Siberian rivers flow formation, in an increase of precipitation and, as a result, in an increase of the run-off of rivers flowing into the Arctic Ocean. <span>The </span><span>connection</span><span> between the indices and surface air temperature, precipitation, atmospheric moisture content in the regions of catchment areas </span><span>of three main Siberian rivers, Ob, Lena and Yenisei,</span><span> confirmed the influence of atmospheric transport</span><span>s</span><span> in the cold part of the year. Assessment of the relationship between changes of climatic conditions in the catchment areas and interannual changes of river runoff parameters indicated that annual runoff increases and mostly is affected by increase of average annual precipitation. </span>The study was carried out with the support of the Russian Foundation for Basic Research (Project 18-05-60107).</span></p>

The simulated response of dimethylsulfide production in the Arctic Ocean to global warming

Tellus B ◽  
2005 ◽  
Vol 57 (5) ◽  
pp. 391-403 ◽  
Author(s):  
Albert J. Gabric ◽  
Bo Qu ◽  
Patricia Matrai ◽  
Anthony C. Hirst
Keyword(s):  
Global Warming ◽  
Arctic Ocean ◽  
The Arctic ◽  
The Arctic Ocean

scholarly journals Algal Export in the Arctic Ocean in Times of Global Warming

2019 ◽  
Vol 46 (11) ◽  
pp. 5959-5967 ◽  
Author(s):  
Catherine Lalande ◽  
Eva‐Maria Nöthig ◽  
Louis Fortier
Keyword(s):  
Global Warming ◽  
Arctic Ocean ◽  
The Arctic ◽  
The Arctic Ocean

Surface Arctic Amplification Factors in CMIP5 Models: Land and Oceanic Surfaces and Seasonality

2016 ◽  
Vol 29 (9) ◽  
pp. 3297-3316 ◽  
Author(s):  
Alexandre Laîné ◽  
Masakazu Yoshimori ◽  
Ayako Abe-Ouchi
Keyword(s):  
Global Warming ◽  
Arctic Ocean ◽  
Kernel Method ◽  
The Arctic ◽  
Cmip5 Models ◽  
Primary Role ◽  
Arctic Amplification ◽  
Surface Warming ◽  
The Arctic Ocean ◽  
The Tropics

Abstract Arctic amplification (AA) is a major characteristic of observed global warming, yet the different mechanisms responsible for it and their quantification are still under investigation. In this study, the roles of different factors contributing to local surface warming are quantified using the radiative kernel method applied at the surface after 100 years of global warming under a representative concentration pathway 4.5 (RCP4.5) scenario simulated by 32 climate models from phase 5 of the Coupled Model Intercomparison Project. The warming factors and their seasonality for land and oceanic surfaces were investigated separately and for different domains within each surface type where mechanisms differ. Common factors contribute to both land and oceanic surface warming: tropospheric-mean atmospheric warming and greenhouse gas increases (mostly through water vapor feedback) for both tropical and Arctic regions, nonbarotropic warming and surface warming sensitivity effects (negative in the tropics, positive in the Arctic), and warming cloud feedback in the Arctic in winter. Some mechanisms differ between land and oceanic surfaces: sensible and latent heat flux in the tropics, albedo feedback peaking at different times of the year in the Arctic due to different mean latitudes, a very large summer energy uptake and winter release by the Arctic Ocean, and a large evaporation enhancement in winter over the Arctic Ocean, whereas the peak occurs in summer over the ice-free Arctic land. The oceanic anomalous energy uptake and release is further studied, suggesting the primary role of seasonal variation of oceanic mixed layer temperature changes.

scholarly journals Reservoirs of the Catchment Areas of the Arctic Seas of Russia

2019 ◽  
Vol 46 (2) ◽  
pp. 123-131
Author(s):  
E. A. Barabanova
Keyword(s):  
Arctic Ocean ◽  
Water Regime ◽  
Temporal Distribution ◽  
The Arctic ◽  
Arctic Seas ◽  
Catchment Areas ◽  
The Arctic Ocean ◽  
Irtysh Basin ◽  
The Russian Federation ◽  
Annual Discharge

The spatial-temporal distribution of reservoirs in the catchment areas of the seas of the Arctic Ocean within the Russian Federation and the main rivers flowing into them have been analyzed. Additionally, Ob River is considered as a whole together with the Kazakh part of the Irtysh Basin. The stages of hydrotechnical development of water resources have been identified and characterized. The influence of reservoirs on the water regime and the annual discharge of the main rivers flowing into the Arctic Ocean have been determined. The prospects for the creation of reservoirs are shown.

scholarly journals An energy budget approach to understand the Arctic warming during the Last Interglacial

2021 ◽  
Author(s):  
Marie Sicard ◽  
Masa Kageyama ◽  
Sylvie Charbit ◽  
Pascale Braconnot ◽  
Jean-Baptiste Madeleine
Keyword(s):  
Sea Ice ◽  
Arctic Ocean ◽  
Air Temperature ◽  
Energy Budget ◽  
Surface Air Temperature ◽  
The Arctic ◽  
Last Interglacial ◽  
Near Surface ◽  
Arctic Warming ◽  
The Arctic Ocean

Abstract. The Last Interglacial period (129–116 ka BP) is characterized by a strong orbital forcing which leads to a different seasonal and latitudinal distribution of insolation compared to the pre-industrial period. In particular, these changes amplify the seasonality of the insolation in the high latitudes of the northern hemisphere. Here, we investigate the Arctic climate response to this forcing by comparing the CMIP6 lig127k and pi-Control simulations performed with the IPSL-CM6A-LR model. Using an energy budget framework, we analyse the interactions between the atmosphere, ocean, sea ice and continents. In summer, the insolation anomaly reaches its maximum and causes a near-surface air temperature rise of 3.2 °C over the Arctic region. This warming is primarily due to a strong positive surface downwelling shortwave radiation anomaly over continental surfaces, followed by large heat transfers from the continents back to the atmosphere. The surface layers of the Arctic Ocean also receives more energy, but in smaller quantity than the continents due to a cloud negative feedback. Furthermore, while heat exchanges from the continental surfaces towards the atmosphere are strengthened, the ocean absorbs and stores the heat excess due to a decline in sea ice cover. However, the maximum near-surface air temperature anomaly does not peak in summer like insolation, but occurs in autumn with a temperature increase of 4.0 °C relative to the pre-industrial period. This strong warming is driven by a positive anomaly of longwave radiations over the Arctic ocean enhanced by a positive cloud feedback. It is also favoured by the summer and autumn Arctic sea ice retreat (−1.9 × 106 and −3.4 × 106 km2 respectively), which exposes the warm oceanic surface and allows heat stored by the ocean in summer and water vapour to be released. This study highlights the crucial role of the sea ice cover variations, the Arctic ocean, as well as changes in polar clouds optical properties on the Last Interglacial Arctic warming.

Water vapor feedback over the Arctic Ocean

1995 ◽  
Vol 100 (D7) ◽  
pp. 14223 ◽  
Author(s):  
J. A. Curry ◽  
J. L. Schramm ◽  
M. C. Serreze ◽  
E. E. Ebert
Keyword(s):  
Water Vapor ◽  
Arctic Ocean ◽  
The Arctic ◽  
Water Vapor Feedback ◽  
The Arctic Ocean

scholarly journals The simulated response of dimethylsulfide production in the Arctic Ocean to global warming

Tellus B ◽  
2005 ◽  
Vol 57 (5) ◽  
pp. 391-403 ◽  
Author(s):  
ALBERT J. GABRIC ◽  
BO QU ◽  
PATRICIA MATRAI ◽  
ANTHONY C. HIRST
Keyword(s):  
Global Warming ◽  
Arctic Ocean ◽  
The Arctic ◽  
The Arctic Ocean
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