Article
Geosciences, Multidisciplinary
Rudong Zhang, Hailong Wang, Qiang Fu, Philip J. Rasch, Mingxuan Wu, Wieslaw Maslowski
Summary: The Arctic amplification (AA) is still an open question whether sea-ice loss or lapse-rate feedback dominates. Analysis suggests that changes in clear-sky downward longwave radiation contribute the most to the surface warming trend during the cold season, while a reduction in lower-tropospheric inversions plays a unique role in the downward longwave radiation reduction.
GEOPHYSICAL RESEARCH LETTERS
(2021)
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
Eui-Seok Chung, Kyung-Ja Ha, Axel Timmermann, Malte F. Stuecker, Tamas Bodai, Sang-Ki Lee
Summary: Research suggests that the Arctic amplification is primarily due to the lapse-rate feedback and sea-ice albedo feedback. The Arctic Ocean acts as a heat capacitor, storing heat during summer and releasing it back into the atmosphere in fall and winter, intensifying surface warming and moistening. This process enhances longwave feedback and explains the predominance of Arctic amplification in fall and winter.
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
Environmental Sciences
Jian Liu, Liyang Zhan, Qingkai Wang, Man Wu, Wangwang Ye, Jiexia Zhang, Yuhong Li, Jianwen Wen, Liqi Chen
Summary: Nitrous oxide (N2O) is an important greenhouse gas in the atmosphere, and the ocean is a significant source of N2O. The melting of ice in the Arctic Ocean due to global warming has a significant impact on the N2O pattern in the Arctic environment. The study found that N2O concentration is higher at the bottom and surface of melting ice, while lower inside the ice. Underlying seawater acts as a sink for N2O, but the observed concentrations are higher than expected, indicating the need for further understanding of the mechanisms in the Arctic Ocean.
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
Geosciences, Multidisciplinary
Jingwen Zeng, Qinghua Yang, Xuewei Li, Xiaojun Yuan, Mitchell Bushuk, Dake Chen
Summary: This study investigates the potential influence of surface heat flux, cloud, and water vapor anomalies on the monthly to seasonal predictions of Arctic sea ice concentration (SIC) anomalies. The results show that models using surface fluxes, clouds, or water vapor in combination with SIC and surface sea temperature as predictors can enhance the skill in predicting Arctic September SIC when initialized in spring. This suggests that including the surface heat budget has the potential to reduce the spring barrier for Arctic SIC predictions.
GEOPHYSICAL RESEARCH LETTERS
(2023)
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
Environmental Sciences
Haili Li, Chang-Qing Ke, Qinghui Zhu, Mengmeng Li, Xiaoyi Shen
Summary: Snowpack on sea ice plays a vital role in the Earth's climate system. This study proposes a regression analysis model for estimating snow depth and compares it with a deep learning model and a neural network model. The results show that the regression analysis-five variable long short-term memory model performs well in estimating snow depth.
REMOTE SENSING OF ENVIRONMENT
(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
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
Meteorology & Atmospheric Sciences
Yu-Chiao Liang, Claude Frankignoul, Young-Oh Kwon, Guillaume Gastineau, Elisa Manzini, Gokhan Danabasoglu, Lingling Suo, Stephen Yeager, Yongqi Gao, Jisk J. Attema, Annalisa Cherchi, Rohit Ghosh, Daniela Matei, Jennifer Mecking, Tian Tian, Ying Zhang
Summary: This study investigates the atmospheric responses to Arctic sea ice variability using large-ensemble experiments of atmospheric circulation models. The results suggest that Arctic sea ice loss plays a significant role in explaining the Arctic warming trends and weakening of the wintertime Arctic Oscillation. The interannual covariability between sea ice extent and atmospheric circulation observed in the Barents-Kara Seas is consistent with model simulations, but caution is needed in interpreting these results due to potential effects of internal atmospheric variability.
JOURNAL OF CLIMATE
(2021)
Article
Geosciences, Multidisciplinary
Lars Aue, Annette Rinke
Summary: We explore changes in sea ice concentration associated with synoptic cyclones in the Greenland, Barents and Kara Seas for each month of the year from 1979 to 2018. The findings reveal that these changes are significant throughout the year, but their strength and sign differ depending on the region, month, and time scale. The research also demonstrates significant alterations in cyclone impacts on sea ice over the past four decades, with the most pronounced changes occurring in October and November.
GEOPHYSICAL RESEARCH LETTERS
(2023)
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
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
Environmental Sciences
David G. Ainley, Grant Ballard, Joseph T. Eastman, Clive W. Evans, Nadav Nur, Claire L. Parkinson
Article
Environmental Sciences
Claire L. Parkinson, Nicolo E. DiGirolamo
REMOTE SENSING OF ENVIRONMENT
(2016)
Article
Meteorology & Atmospheric Sciences
Stacy E. Porter, Claire L. Parkinson, Ellen Mosley-Thompson
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2016)
Article
Fisheries
David G. Ainley, Nadav Nur, Joseph T. Eastman, Grant Ballard, Claire L. Parkinson, Clive W. Evans, Arthur L. DeVries
FISH AND FISHERIES
(2013)
Article
Geosciences, Multidisciplinary
Claire L. Parkinson, Josefino C. Comiso
GEOPHYSICAL RESEARCH LETTERS
(2013)
Article
Geochemistry & Geophysics
Donald J. Cavalieri, Claire L. Parkinson, Nicolo DiGirolamo, Alvaro Ivanoff
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
(2012)
Article
Engineering, Electrical & Electronic
Claire L. Parkinson
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
(2013)
Article
Meteorology & Atmospheric Sciences
Claire L. Parkinson
JOURNAL OF CLIMATE
(2014)
Article
Meteorology & Atmospheric Sciences
Linette N. Boisvert, Thorsten Markus, Claire L. Parkinson, Timo Vihma
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2012)
Article
Multidisciplinary Sciences
Claire L. Parkinson
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2019)
Review
Geochemistry & Geophysics
Bryan N. Duncan, Lesley E. Ott, James B. Abshire, Ludovic Brucker, Mark L. Carroll, James Carton, Josefino C. Comiso, Emmanuel P. Dinnat, Bruce C. Forbes, Alemu Gonsamo, Watson W. Gregg, Dorothy K. Hall, Iolanda Ialongo, Randi Jandt, Ralph A. Kahn, Alexey Karpechko, Stephan R. Kawa, Seiji Kato, Timo Kumpula, Erkki Kyrola, Tatiana V. Loboda, Kyle C. McDonald, Paul M. Montesano, Ray Nassar, Christopher S. R. Neigh, Claire L. Parkinson, Benjamin Poulter, Jouni Pulliainen, Kimmo Rautiainen, Brendan M. Rogers, Cecile S. Rousseaux, Amber J. Soja, Nicholas Steiner, Johanna Tamminen, Patrick C. Taylor, Maria A. Tzortziou, Henrik Virta, James S. Wang, Jennifer D. Watts, David M. Winker, Dong L. Wu
REVIEWS OF GEOPHYSICS
(2020)
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
Humanities, Multidisciplinary
Claire L. Parkinson
PROCEEDINGS OF THE AMERICAN PHILOSOPHICAL SOCIETY
(2017)
Article
Geography, Physical
D. J. Cavalieri, C. L. Parkinson
