Dmitry Divine
A5085584803- Arctic and Antarctic ice dynamics
- Cryospheric studies and observations
- Climate change and permafrost
- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Climate variability and models
- Isotope Analysis in Ecology
- Tree-ring climate responses
- Geological Studies and Exploration
- Atmospheric and Environmental Gas Dynamics
- Marine and environmental studies
- Winter Sports Injuries and Performance
- Oceanographic and Atmospheric Processes
- Polar Research and Ecology
- Landslides and related hazards
- Arctic and Russian Policy Studies
- Soil Moisture and Remote Sensing
- Freezing and Crystallization Processes
- Hydrocarbon exploration and reservoir analysis
- Archaeology and ancient environmental studies
- Tropical and Extratropical Cyclones Research
- Meteorological Phenomena and Simulations
- Marine animal studies overview
- Groundwater and Isotope Geochemistry
- Geological formations and processes
Norwegian Polar Institute
2016-2025
UiT The Arctic University of Norway
2011-2021
Technische Universität Berlin
2021
University of Bremen
2021
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
2021
GFZ Helmholtz Centre for Geosciences
2021
The FRAM Centre
2012-2019
Abstract Reproducible climate reconstructions of the Common Era (1 CE to present) are key placing industrial-era warming into context natural climatic variability. Here we present a community-sourced database temperature-sensitive proxy records from PAGES2k initiative. The gathers 692 648 locations, including all continental regions and major ocean basins. trees, ice, sediment, corals, speleothems, documentary evidence, other archives. They range in length 50 2000 years, with median 547...
Year-round observations of the physical snow and ice properties processes that govern pack evolution its interaction with atmosphere ocean were conducted during Multidisciplinary drifting Observatory for Study Arctic Climate (MOSAiC) expedition research vessel Polarstern in Ocean from October 2019 to September 2020. This work was embedded into interdisciplinary design 5 MOSAiC teams, studying atmosphere, sea ice, ocean, ecosystem, biogeochemical processes. The overall aim characterize cover...
Abstract. Climate trends in the Antarctic region remain poorly characterized, owing to brevity and scarcity of direct climate observations large magnitude interannual decadal-scale variability. Here, within framework PAGES Antarctica2k working group, we build an enlarged database ice core water stable isotope records from Antarctica, consisting 112 records. We produce both unweighted weighted isotopic (δ18O) composites temperature reconstructions since 0 CE, binned at 5- 10-year resolution,...
Arctic Ocean properties and processes are highly relevant to the regional global coupled climate system, yet still scarcely observed, especially in winter. Team OCEAN conducted a full year of physical oceanography observations as part Multidisciplinary drifting Observatory for Study Climate (MOSAiC), drift with sea ice from October 2019 September 2020. An international team designed implemented program characterize system unprecedented detail, seafloor air-sea ice-ocean interface,...
Abstract Manifestations of climate change are often shown as gradual changes in physical or biogeochemical properties 1 . Components the system, however, can show stepwise shifts from one regime to another, a nonlinear response system changing forcing 2 Here we that Arctic sea ice shifted 2007 thicker and deformed thinner more uniform cover. Continuous monitoring Fram Strait over last three decades revealed shift. After shift, fraction thick dropped by half has not recovered date. The timing...
Historical ice observations in the Nordic Seas from April through August are used to construct time series of edge position anomalies spanning period 1750–2002. While analysis showed that interannual variability remained almost constant throughout this period, evidence was found oscillations cover with periods about 60 80 years and 20 30 years, superimposed on a continuous negative trend. The lower frequency more prominent Greenland Sea, while higher dominant Barents. suggests recent...
A high‐resolution sediment core from the Vøring Plateau has been studied to document centennial millennial variability of surface water conditions during Holocene Climate Optimum (HCO) and late period (LHP) in order evaluate effects solar insolation on ocean climatology. Quantitative August summer sea temperatures (SSSTs) with a time resolution 2–40 years are reconstructed by using three different diatom transfer function methods. Spectral‐ scale‐space methods applied records explore present...
Abstract Satellite data suggest an Arctic sea ice‐climate system in rapid transformation, yet its long‐term natural modes of variability are poorly known. Here we integrate and synthesize a set multicentury historical records Atlantic ice, supplemented with high‐resolution paleoproxy records, each reflecting primarily winter/spring ice conditions. We establish signal pervasive persistent multidecadal (~60–90 year) fluctuations that is most pronounced the Greenland Sea weakens further away....
A large retreat of sea-ice in the 'stormy' Atlantic Sector Arctic Ocean has become evident through a series record minima for winter maximum extent since 2015. Results from Norwegian young sea ICE (N-ICE2015) expedition, five-month-long (Jan-Jun) drifting ice station first and second year pack-ice north Svalbard, showcase how this region is frequently affected by passing storms. Here we synthesise interdisciplinary N-ICE2015 dataset, including independent observations atmosphere, snow,...
Abstract The salinity and water oxygen isotope composition (δ 18 O) of 29 first‐year (FYI) second‐year (SYI) Arctic sea ice cores (total length 32.0 m) from the drifting pack north Svalbard were examined to quantify contribution snow mass. Five 6.4 analyzed for their structural composition, showing variable 10–30% by granular ice. In these cores, had been entrained in 6–28% total thickness. We found evidence about three quarters when surface layers very low δ O values. Snow contributed...
Abstract The Fram Strait sea ice volume export 1992–2014 is derived by combining thickness from upward looking sonars (ULS) with satellite observations of drift and area. the main gate for Arctic. average yearly 2,400 ± 640 km 3 . mean modal ULS in decreased 15% 21% per decade, respectively, during 1990–2014. Combined area this leads to a decrease Arctic 27 2% decade between 1992 2014. Thus, given time period, changes do not drive Basin. However, individual years like 2007 2012 likely has...
Abstract. Reconstructions of global hydroclimate during the Common Era (CE; past ∼2000 years) are important for providing context current and future environmental change. Stable isotope ratios in water quantitative indicators on regional to scales, these signals encoded a wide range natural geologic archives. Here we present Iso2k database, compilation previously published datasets from variety archives that record stable oxygen (δ18O) or hydrogen (δ2H) isotopic compositions waters, which...
Repeated transects have become the backbone of spatially distributed ice and snow thickness measurements crucial for understanding mass balance. Here we detail at Multidisciplinary drifting Observatory Study Arctic Climate (MOSAiC) 2019–2020, which represent first such collected across an entire season. Compared with similar historical transects, MOSAiC was thin (mean depths approximately 0.1–0.3 m), while sea relatively thick first-year (FYI) second-year (SYI). SYI two distinct types: level...
The Barents Sea is one of the Polar regions where current climate and ecosystem change most pronounced. Here we review state knowledge physical, chemical biological systems in Sea. Physical conditions this area are characterized by large seasonal contrasts between partial sea-ice cover winter spring versus predominantly open water summer autumn. Observations over recent decades show that surface air ocean temperatures have increased, extent has decreased, stratification weakened, chemistry...
Low-salinity meltwater from Arctic sea ice and its snow cover accumulates creates under-ice layers below ice. These can result in the formation of new layers, or false bottoms, at interface this low-salinity colder seawater. As part Multidisciplinary drifting Observatory for Study Climate (MOSAiC), we used a combination coring, temperature profiles thermistor strings underwater multibeam sonar surveys with remotely operated vehicle (ROV) to study areal coverage temporal evolution bottoms...
Two isotopic ice core records from western Svalbard are calibrated to reconstruct more than 1000 years of past winter surface air temperature variations in Longyearbyen, Svalbard, and Vardø, northern Norway. Analysis the derived reconstructions suggests that climate evolution last millennium these study areas comprises three major sub-periods. The cooling stage (ca. 800-1800) is characterized by a progressive approximately 0.9°C century-1 (0.3°C for Vardø) lack distinct signs abrupt...
Abstract In recent years, sea‐ice conditions in the Arctic Ocean changed substantially toward a younger and thinner cover. To capture scope of these changes identify differences between individual regions, situ observations from expeditions are valuable data source. We present continuous time series measurements N‐ICE2015 expedition January to June 2015 Basin north Svalbard, comprising snow buoy ice mass balance local regional gained electromagnetic induction (EM) surveys probe four distinct...
Abstract. We evaluate an inverse approach to reconstruct distributed bedrock topography and simultaneously initialize ice flow model. The method involves iterative procedure in which dynamical model (PISM) is run multiple times over a prescribed period, while being forced with space- time-dependent climate input. After every iteration bed heights are adjusted using information of the remaining misfit between observed modeled surface topography. first applied synthetic experiments constant...
Abstract. Reanalysis data show an increasing trend in Arctic precipitation over the 20th century, but changes are not homogenous across seasons or space. The observed hydroclimate expected to continue and possibly accelerate coming only affecting pan-Arctic natural ecosystems human activities, also lower latitudes through atmospheric ocean circulations. However, a lack of spatiotemporal observational makes reliable quantification change difficult, especially long-term context. To understand...
Fram Strait is the major gateway connecting Arctic Ocean and North Atlantic Ocean, where nearly 90% of sea ice export from takes place. The exported a large source freshwater to Nordic Seas Subpolar Atlantic, thereby preconditioning European climate deep water formation in Ocean. Here we show that 2018, through showed an unprecedented decline since early 1990s. 2018 was reduced less than 40% relative between 2000 2017. minimum attributed regional ice-ocean processes driven by anomalous...
The increased fraction of first year ice (FYI) at the expense old (second-year (SYI) and multi-year (MYI)) likely affects permeability Arctic cover. This in turn influences pathways gases circulating therein exchange interfaces with atmosphere ocean. We present sea temperature salinity time series from different types relevant to temporal development brine drainage efficiency freeze-up October onset spring warming May. Our study is based on a dataset collected during Multidisciplinary...
Sea-ice ridges constitute a large fraction of the ice volume in Arctic Ocean, yet we know little about evolution these masses. Here examine thermal and morphological an first-year sea-ice ridge, from its formation to advanced melt. Initially mean keel depth was 5.6 m sail height 0.7 m. The initial rubble macroporosity (fraction seawater filled voids) estimated at 29% drilling 43%–46% buoy temperature. From January until mid-April, ridge consolidated slowly by heat loss atmosphere total layer...
Abstract. The Svalbard archipelago is particularly sensitive to climate change due the relatively low altitude of its main ice fields and geographical location in higher North Atlantic, where effect Arctic amplification more significant. largest temperature increases have been observed during winter, but increasing summer temperatures, above melting point, led increased glacier melt. Here, we evaluate impact this melt on preservation oxygen isotope (δ18O) signal firn records. δ18O commonly...