A5013360971- Arctic and Antarctic ice dynamics
- Meteorological Phenomena and Simulations
- Climate variability and models
- Atmospheric and Environmental Gas Dynamics
- Cryospheric studies and observations
- Atmospheric aerosols and clouds
- Atmospheric chemistry and aerosols
- Methane Hydrates and Related Phenomena
- Climate change and permafrost
- Wind and Air Flow Studies
- Ocean Waves and Remote Sensing
- Oceanographic and Atmospheric Processes
- Icing and De-icing Technologies
- Atmospheric Ozone and Climate
- Tropical and Extratropical Cyclones Research
- Spacecraft Design and Technology
- Fluid Dynamics and Turbulent Flows
- Geological Studies and Exploration
- Aerospace and Aviation Technology
- Geochemistry and Geologic Mapping
- Scientific Research and Discoveries
- Geophysics and Gravity Measurements
- Flow Measurement and Analysis
- Calibration and Measurement Techniques
- Ocean Acidification Effects and Responses
Moscow Center For Continuous Mathematical Education
2021-2025
A.M. Obukhov Institute of Atmospheric Physics
2014-2025
Lomonosov Moscow State University
2024
Institute of Mathematical Problems of Biology
2024
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2018-2023
Russian Academy of Sciences
2015-2022
Moscow Institute of Physics and Technology
2020-2021
Russian State Hydrometeorological University
2013
Abstract Clouds play an important role in Arctic amplification. This term represents the recently observed enhanced warming of relative to global increase near-surface air temperature. However, there are still knowledge gaps regarding interplay between clouds and aerosol particles, surface properties, as well turbulent radiative fluxes that inhibit accurate model simulations climate system. In attempt resolve this so-called cloud puzzle, two comprehensive closely coordinated field studies...
Abstract. The Arctic CLoud Observations Using airborne measurements during polar Day (ACLOUD) campaign was carried out north-west of Svalbard (Norway) between 23 May and 6 June 2017. objective ACLOUD to study boundary layer mid-level clouds their role in amplification. Two research aircraft (Polar 5 6) jointly performed 22 flights over the transition zone open ocean closed sea ice. Both were equipped with identical instrumentation for basic meteorological parameters, as well turbulent...
Two airborne field campaigns focusing on observations of Arctic mixed-phase clouds and boundary layer processes their role with respect to amplification have been carried out in spring 2019 late summer 2020 over the Fram Strait northwest Svalbard. The latter campaign was closely connected Multidisciplinary drifting Observatory for Study Climate (MOSAiC) expedition. Comprehensive datasets cloudy atmosphere collected by operating remote sensing instruments, in-situ probes, instruments...
A nonhydrostatic model (NH3D) is used for idealized dry quasi 2‐D simulations of Arctic cold‐air outbreaks using horizontal grid spacings between 1.25 and 60 km. Despite the setup, results agree well with observations over Fram Strait. It shown that an important characteristic flow regime during ice‐breeze jet (IBJ) a maximum wind speed exceeding often large‐scale geostrophic speed. According to present simulations, which very those another mesoscale (METRAS), occurrence, strength, extent L...
Abstract A simple analytical model of the atmospheric boundary layer (ABL) coupled to sea ice is presented. It describes clear-sky cooling over during polar night in presence leads. The solutions show that concentration and wind speed have a strong impact on thermal regime ice. Leads cause both warming ABL an increase stability sharp transition from weakly stable state strongly decoupled when decreasing. threshold value function concentration. characterized by large air–surface temperature...
The summer of 2022 was notable for the Svalbard archipelago due to occurrence several longstanding heatwaves, making it one warmest summers on regional record. This study used an energy balance model forced with in situ weather observations investigate influence extreme events surface low-elevation Aldegondabreen glacier (5.2 km2), located near Barentsburg town, a focus turbulent heat exchange. annual mass (−2.13 m w.e.) most negative record since 2002/2003 when glaciological monitoring...
Abstract. This article presents a comprehensive analysis of the foehn episode which occurred over Svalbard on 30–31 May 2017. is well documented by multiplatform measurements carried out during Arctic CLoud Observations Using airborne polar Day (ACLOUD) and Physical feedbacks PBL, Sea ice, Cloud And AerosoL (PASCAL) campaigns. Both orographic wind modification warming are considered here. The latter found to be primarily produced isentropic drawdown, evident from observations mesoscale...
Abstract. Clouds are assumed to play an important role in the Arctic amplification process. This motivated a detailed investigation of cloud processes, including radiative and turbulent fluxes. Data from aircraft campaign ACLOUD were analyzed with focus on mean structure cloudy boundary layer over Fram Strait marginal sea ice zone late spring early summer 2017. Vertical profiles turbulence moments presented contrasting atmospheric layers (ABLs) 4 d. They differ by magnitude wind speed,...
CORRESPONDING AUTHOR: Helge F. Goessling, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bussestrasse 24, D-27570 Bremerhaven, Germany, E-mail: helge.goessling@awi.de
Abstract The modeling of the atmospheric boundary layer over sea ice is still challenging because complex interaction between clouds, radiation and turbulence often inhomogeneous cover. There much uncertainty concerning roughness, near‐surface thermal stability related processes, their accurate parameterization. Here, a regional Arctic climate model forced by ERA‐Interim data was used to test sensitivity simulations modified surface flux parameterization for wintertime conditions Arctic....
CORRESPONDING AUTHOR: Thomas Spengler, Geophysical Institute, University of Bergen, Postboks 7803, 5020 Norway, E-mail: thomas.spengler@gfi.uib.no
The study presents the first results from multi-platform observational campaign carried out at Mukhrino peatland in June 2022. focus of is quantification spatial contrasts surface heat budget terms and methane emissions across peatland, which arise due to presence microlandscape heterogeneities. It found that temperature exceeded 10 °C for clear-sky conditions both during day night. Diurnal variation was strongest over ridges drier hollows smallest waterlogged shallow lakes. This resulted...
Abstract In this study, we evaluated the climatology and interannual variability of marine cold-air outbreaks (MCAOs) in Russian Arctic marginal seas (from Barents to Chukchi seas). We used a simple index for identifying MCAOs based on vertical potential temperature gradient between sea surface 800 hPa level. calculated using 6-hourly Era-Interim data 1979–2018 period. Given index, spatial temporal weak, medium, strong frequency as well their dependence sea-ice concentration non-parametric...
Abstract. Springtime Arctic mixed-phase convection over open water in the Fram Strait as observed during recent ACLOUD (Arctic CLoud Observations Using airborne measurements polar Day) field campaign is simulated at turbulence-resolving resolutions. The first objective to assess skill of large-eddy simulation (LES) reproducing convection. second goal then use model investigate how aerosol modulates way which turbulent mixing and clouds transform low-level air mass. focus lies on thermal...