Article
Oceanography
D. G. Babb, R. J. Galley, S. Kirillov, J. C. Landy, S. E. L. Howell, J. C. Stroeve, W. Meier, J. K. Ehn, D. G. Barber
Summary: The loss of multiyear sea ice in the Arctic Ocean has occurred primarily through two stepwise reductions: in 1989 and in 2006-2008. The first reduction was due to high export of multiyear ice, while the second reduction was a result of both high export and melt, as well as limited replenishment of multiyear ice. Although currently stable, reduced retention of older multiyear ice has led to a younger and thinner multiyear ice pack, potentially setting the stage for another reduction.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2023)
Article
Environmental Sciences
Seungmok Paik, Daehyun Kim, Soon-Il An, Yoo-Geun Ham
Summary: This study evaluates the projections of September sea ice area (SIA) in the Arctic using CMIP6 model simulations and taking into account Arctic sub-regions. Findings show that the models overestimate the historical SIA decreasing trend in the central Arctic but underestimate it in the surrounding shelf seas. The central Arctic, which is expected to retain sea ice for the longest period, is of particular significance in predicting the first ice-free September. Observationally-constrained projections suggest a delay of 12 years compared to raw/unconstrained projections, highlighting the importance of considering model biases in central Arctic SIA.
Article
Oceanography
Victoria Hill, Bonnie Light, Michael Steele, Andrew Lowy Sybrandy
Summary: Novel observations were collected on the seasonal evolution of an ice algal bloom on the Chukchi shelf using two autonomous buoys. The differences in ice algae biomass under each buoy were driven by variations in snow thickness, with nutrients being limiting at the low snow site and light being limiting at the high snow site.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Environmental Sciences
Claire L. Parkinson, Nicolo E. DiGirolamo
Summary: The satellite dataset spanning 42 years from 1979 to 2020 reveals recent losses in sea ice coverage in both the Arctic and Antarctic, with the Arctic experiencing record low sea ice extents while the Antarctic has seen record lows since 2015. The data also shows that globally, every calendar month has recorded a new monthly record low within the past 5 years, indicating a rapid decline in global sea ice coverage.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Environmental Sciences
Jong -Min Kim, Sang -Woo Kim, Byung-Ju Sohn, Hyun-Cheol Kim, Sang-Moo Lee, Young-Joo Kwon, Hoyeon Shi, Andrey V. Pnyushkov
Summary: A method was developed to estimate pan-Arctic ice draft using spaceborne passive microwave measured brightness temperatures. The method was validated using upward-looking sonar measurements and ice mass balance buoy measurements. The results showed good agreement between the estimated ice draft and the measurements, suggesting the robustness of the estimation method.
REMOTE SENSING OF ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Arttu Jutila, Joshua King, John Paden, Robert Ricker, Stefan Hendricks, Chris Polashenski, Veit Helm, Tobias Binder, Christian Haas
Summary: This study presents a new method for measuring high-resolution snow depth on Arctic sea ice using airborne microwave radar measurements. The method improves the accuracy of radar-derived snow depth data through calibration and data processing. The results show that the method is capable of accurately measuring snow depth on Arctic sea ice.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Meteorology & Atmospheric Sciences
Yunhe Wang, Xiaojun Yuan, Haibo Bi, Yibin Ren, Yu Liang, Cuihua Li, Xiaofeng Li
Summary: The study developed a linear Markov model for the seasonal prediction of sea ice thickness (SIT). The model performed better in the cold season and up to 12 months in advance in the Arctic basin. The model skill remained high even after removing trends and the upper-ocean heat content (OHC) was found to contribute more to SIT prediction skill than other variables.
JOURNAL OF CLIMATE
(2023)
Article
Engineering, Marine
Genrikh V. Alekseev, Natalia I. Glok, Anastasia E. Vyazilova, Natalia E. Kharlanenkova, Mikhail Yu. Kulakov
Summary: Studies have shown that an increase in sea surface temperature at low latitudes can affect the climate and sea ice extent in the Arctic, causing changes in the climate system. This paper utilized multivariate correlation analysis, calculation of spectra and coherence, and creation of correlation graphs to estimate for the first time the impact of heat transport from low latitudes on climate change and sea ice extent in the Arctic over the past 40 years.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Environmental Sciences
Xiao Zhou, Bin Wang, Fei Huang
Summary: The rapid decline of Arctic sea ice is a clear indication of global climate change. Existing evaluation metrics are insufficient, leading to the proposal of two new metrics based on sea ice thickness. Good models project the first ice-free year in the Arctic to be 2049.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Lars Aue, Timo Vihma, Petteri Uotila, Annette Rinke
Summary: Based on the ERA5 reanalysis, this study examines the impacts of transient cyclones on sea ice concentration (SIC) in the Atlantic sector of the Arctic Ocean under New Arctic conditions (2000-2020). The results show a pattern of reduced SIC prior to and during cyclones for the entire study area, with a regional difference of increased SIC in the Barents Sea and reduced SIC in the Greenland Sea from 3 days before to 5 days after the cyclone passage. The study suggests that both thermodynamic and dynamic effects contribute to the SIC changes, particularly in the Barents Sea, compared to the Old Arctic (1979-1999).
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
David G. Babb, Ryan J. Galley, Stephen E. L. Howell, Jack C. Landy, Julienne C. Stroeve, David G. Barber
Summary: Research shows that there has been an increasing loss of multiyear sea ice in the Arctic region in recent years. Data from 1997 to 2021 reveals that while the import of multiyear ice into the Beaufort Sea has increased, less of it now survives through the summer and is transported in the Gyre. The annual average loss of multiyear ice has quadrupled over the study period, accounting for about 33% of the annual Fram Strait multiyear ice export. The loss of multiyear ice is attributed to the ice-albedo feedback and the transition towards younger, thinner ice.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Jinlun Zhang
Summary: The model study indicates that the slowdown in the decline of Arctic sea ice volume during 2007-2020 is a result of decreased ice export exceeding the decrease in net ice production. Thinner ice grows faster than thicker ice under freezing conditions, and benefits from enhanced ice divergence and shear.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Shutong Song, Yue Chen, Xianyao Chen, Changshuo Chen, King-Fai Li, Ka-Kit Tung, Qiuli Shao, Yilin Liu, Xiaoyu Wang, Li Yi, Jinping Zhao
Summary: The rapid retreat of Arctic sea ice has created new trans-Arctic shipping routes. However, these projected routes may not be as cost-effective as expected due to the increased frequency of sea fog over areas with retreating sea ice. Our research shows that sea fog delays can be 1-4 days longer along the Northwest Passage (23%-27%) and 4%-11% longer along the Northern Sea Route than previously estimated. We have designed a new route based on projected sea-ice extent and sea fog frequency, which can reduce sailing time by 0.3-1 day by avoiding routes with heavier sea fog impacts. This new route also lowers the risk of accidents and saves costs from unscheduled port calls.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
David B. Bonan, Tapio Schneider, Ian Eisenman, Robert C. J. Wills
Summary: State-of-the-art climate models show a wide range in projected decline of Arctic sea-ice area over the 21st century, with present-day biases and differences in Arctic warming being the main contributors to the intermodel spread. Using observations to constrain the projections can delay the timeline for an ice-free Arctic, with a likelihood of an ice-free Arctic occurring between 2036 and 2056 under a high-emissions scenario.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Jun Ono, Masahiro Watanabe, Yoshiki Komuro, Hiroaki Tatebe, Manabu Abe
Summary: Research indicates that Arctic warming amplification is expected to be stronger in a low-emission scenario compared to a high-emission scenario. In the high-emission scenario, summer sea ice may completely melt away by around 2050, while in the low-emission scenario, the reduction of sea ice contributes to Arctic warming amplification.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
