Inter-Basin SST Contrasts during a North Pacific Marine Heatwave: Co-occurring Mid-Latitude Pacific Cooling and North Atlantic Cold Anomaly
Year: 2025
Type: article
Abstract: This preliminary discussion paper synthesizes global observational datasets and recent 2025 literature to document and interpret simultaneous ocean–atmosphere anomalies across three key regions: a persistent North Pacific marine heatwave affecting waters around Japan and the Sea of Okhotsk, a subpolar North Atlantic cold anomaly (“cold blob”), and exceptional Arctic warming north of Siberia with 2-m air-temperature anomalies locally exceeding +10 °C. Using operational products (NOAA OISST v2.1, Copernicus ERA5, Mercator Ocean International marine-heatwave bulletins, NSIDC Arctic sea-ice analyses) and peer-reviewed studies—including Yamagami et al. 2025, which identifies a Gulf-Stream-to-Kuroshio atmospheric bridge—the paper highlights inter-basin coupling mechanisms that explain the coherence of extratropical SST anomalies observed in 2025. The text includes plain-text references with stable URLs for all datasets and sources to facilitate reproducibility and citation.
Author: Kirchner, Marcus Thomas
Language: English
Subfield: Global and Planetary Change
Field: Environmental Science
Domain: Physical Sciences
SDG: Climate action
Open Access status: green
OpenAlex ID: W7083018485
FWCI:
Cites:
Cited by:
Related to: