The dataset provided here is for manuscript Recent upper Arctic Ocean warming expedited by summertime atmospheric processes
by Li et al. that published in Nature Communications.
Abstract: The observed upper (0 – 50 m) Arctic Ocean warming since 1979 has been primarily attributed to anthropogenically driven changes in the high latitudes. Here, using both observational and modeling analyses, we demonstrate that a multiyear trend in the summertime large-scale atmospheric circulation, which we ascribe to internal variability, has played an important role in upper ocean warming in summer and fall over the past four decades due to sea ice-albedo effect induced by atmospheric dynamics. Nudging experiments in which the wind fields are constrained toward the observed state support this mechanism and suggest that the internal variability contribution to recent upper Arctic Ocean warming accounts for up to one quarter of warming over the past four decades and up to 60% of warming from 2000 to 2018. This suggests that climate models need to replicate this important internal process in order to realistically simulate Arctic Ocean temperature variability and trends.
Data source: All reanalysis data used in this study were obtained from publicly available sources. Simulated global circulation, temperature, sea ice, ocean temperature and currents under anthropogenic forcing were obtained from the LENS archives accessed through the Earth System Grid Federation data portal (http://esgf.llnl.gov). Sea Ice Concentration from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 1 is accessed from NSA DAAC at the National Snow and Ice Data Center at https://nsidc.org/data/nsidc-0051. The ECMWF ERA5 reanalysis product is available at https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era5. The ECMWF Ocean ReAnalysis System 5 (ORAS5) product is available at https://www.ecmwf.int/en/research/climate-reanalysis/ocean-reanalysis. The SODA3 product is available at https://www.soda.umd.edu/. The Word Ocean Atlas 2018 (WOA18) is available at https://www.ncei.noaa.gov/products/world-ocean-atlas. The GECCO3 ocean synthesis is available through Integrated Climate Data Center (ICDC) at https://icdc.cen.uni-hamburg.de/en/gecco3.html. The UpTempO buoy data is available at http://psc.apl.washington.edu/UpTempO/Data.php and https://arcticdata.io/catalog/view/doi%3A10.18739%2FA2D21RK2N.
