@article{zhang_tang_zhang_walsh_roesler_hillman_ballinger_weijer_2023, title={Arctic cyclones have become more intense and longer-lived over the past seven decades}, volume={4}, ISSN={["2662-4435"]}, DOI={10.1038/s43247-023-01003-0}, abstractNote={Abstract Intense cyclones driving extreme Arctic weather and climate events have been more frequently observed during recent years, causing dramatic environmental and socioeconomic impacts. However, inconsistencies have emerged about long-term changes in Arctic cyclone activity. Here we analyze multiple reanalysis datasets covering a multidecadal period with improvements to the cyclone tracking algorithm and the integrated cyclone activity metric. The results indicate an intensification of Arctic cyclone activity over the last seven decades. There has been a long-term shift of the maximum cyclone counts from weaker to stronger cyclones and a pronounced lengthening of the duration of strong cyclones. Spatial analysis shows increased strong cyclone frequency over the Arctic, driven by enhanced lower troposphere baroclinicity, amplified winter jet stream waves over the subpolar North Atlantic, and a strengthened summer tropospheric vortex over the central Arctic. The stratospheric vortex has also intensified the tropospheric waves and vortex with distinct dynamics between winter and summer. Recently enhanced baroclinicity over large areas of the Arctic and midlatitudes suggests more complicated atmospheric dynamics than what is hypothesized with Arctic-amplification-induced decrease in meridional temperature gradients.}, number={1}, journal={COMMUNICATIONS EARTH & ENVIRONMENT}, author={Zhang, Xiangdong and Tang, Han and Zhang, Jing and Walsh, John E. and Roesler, Erika L. and Hillman, Benjamin and Ballinger, Thomas J. and Weijer, Wilbert}, year={2023}, month={Oct} }
 @article{ma_huang_zhang_luo_ding_wen_jin_qiao_yin_2023, title={Newly reconstructed Arctic surface air temperatures for 1979-2021 with deep learning method}, volume={10}, ISSN={["2052-4463"]}, DOI={10.1038/s41597-023-02059-5}, abstractNote={A precise Arctic surface air temperature (SAT) dataset, that is regularly updated, has more complete spatial and temporal coverage, and is based on instrumental observations, is critically important for timely monitoring and improving understanding of the rapid change in the Arctic climate. In this study, a new monthly gridded Arctic SAT dataset dated back to 1979 was reconstructed with a deep learning method by combining surface air temperatures from multiple data sources. The source data include the observations from land station of GHCN (Global Historical Climatology Network), ICOADS (International Comprehensive Ocean-Atmosphere Data Set) over the oceans, drifting ice station of Russian NP (North Pole), and buoys of IABP (International Arctic Buoy Programme). The last two are crucial for improving the representation of the in-situ observed temperatures within the Arctic. The newly reconstructed dataset includes monthly Arctic SAT beginning in 1979 and daily Arctic SAT beginning in 2011. This dataset would represent a new improvement in developing observational temperature datasets and can be used for a variety of applications.}, number={1}, journal={SCIENTIFIC DATA}, author={Ma, Ziqi and Huang, Jianbin and Zhang, Xiangdong and Luo, Yong and Ding, Minghu and Wen, Jun and Jin, Weixin and Qiao, Chen and Yin, Yifu}, year={2023}, month={Mar} }
 @article{rabe_martin_solomon_assmann_biddle_haine_hattermann_haumann_jahn_karpouzoglou_et al._2023, title={Polar Fresh Water in a Changing Global Climate Linking Arctic and Southern Ocean Processes}, volume={104}, ISSN={["1520-0477"]}, DOI={10.1175/BAMS-D-23-0046.1}, abstractNote={© 2023 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses). This article is licensed under a Creative Commons Attribution 4.0 license (http://creativecommons.org/licenses/by/4.0/). Corresponding authors: Benjamin Rabe, benjamin.rabe@awi.de; Torge Martin, tomartin@geomar.de}, number={5}, journal={BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY}, author={Rabe, Benjamin and Martin, Torge and Solomon, Amy and Assmann, Karen M. and Biddle, Louise C. and Haine, Thomas and Hattermann, Tore and Haumann, F. Alexander and Jahn, Alexandra and Karpouzoglou, Theodoros and et al.}, year={2023}, month={May}, pages={E970–E979} }
 @article{zhang_chen_orr_overland_vihma_wang_yang_zhang_2023, title={Preface to the Special Issue on Changing Arctic Climate and Low/Mid-latitudes Connections}, volume={40}, ISSN={["1861-9533"]}, DOI={10.1007/s00376-023-3015-8}, number={12}, journal={ADVANCES IN ATMOSPHERIC SCIENCES}, author={Zhang, Xiangdong and Chen, Xianyao and Orr, Andrew and Overland, James E. and Vihma, Timo and Wang, Muyin and Yang, Qinghua and Zhang, Renhe}, year={2023}, month={Dec}, pages={2135–2137} }