Japan Geoscience Union Meeting 2025

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[E] Oral

A (Atmospheric and Hydrospheric Sciences ) » A-CG Complex & General

[A-CG36] Extratropical oceans and atmosphere

Mon. May 26, 2025 10:45 AM - 12:15 PM 101 (International Conference Hall, Makuhari Messe)

convener:Yuta Ando(Department of Earth and Planetary Sciences, Kyushu University), Tong Wang(Japan Agency for Marine-Earth Science and Technology), Kenta Tamura(National Research Institute for Earth Science and Disaster Resilience), Shota Katsura(Department of Geophysics, Graduate School of Science, Tohoku University), Chairperson:Tong Wang(Japan Agency for Marine-Earth Science and Technology), Shota Katsura(Department of Geophysics, Graduate School of Science, Tohoku University)


10:45 AM - 11:00 AM

[ACG36-01] Intensifying Seasonality of the Global Water Cycle as Indicated by Sea Surface Salinity

★Invited Papers

*Frederick Bingham1,2, Eric Bayler (1.University of North Carolina at Wilmington, 2.Global Science & Technology)

Keywords:sea surface salinity, salinity, evaporation, precipitation, water cycle, remote sensing

Sea surface salinity (SSS), an essential climate variable that is sensitive to changes in the global water cycle, varies seasonally in many places due to annual variations in rainfall and evaporation, as well as vertical mixing and advection. The seasonal variability of global mean SSS, with maximum/minimum SSS in March/September has been increasing in amplitude since the start of the satellite observation era in 2010. This variability, with a range of 0.04, is equivalent to approximately 3.0 cm of water leaving from and returning to the surface of the ocean over the course of the year, with its 0.015 increase in range since 2011, roughly equating to an additional 1.0 cm of water cycling out and returning to the ocean. This trend is consistent with predictions of an accelerating global water cycle on a warming planet.