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Title: The residence times of trace elements determined in the surface Arctic Ocean during the 2015 US Arctic GEOTRACES expedition
Award ID(s):
1713677 1434493
Author(s) / Creator(s):
; ; ; ; ; ; ; ; ; ; ;
Date Published:
Journal Name:
Marine Chemistry
Medium: X
Sponsoring Org:
National Science Foundation
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  2. In 2016, the National Science Foundation (NSF) identified 10 “Big Ideas” for advancing science and engineering research and guiding long-term US research investments. Navigating the New Arctic (NNA) was one of those big ideas, highlighting NSF’s continued commitment to funding research to help societies respond to a warming Arctic. NNA focuses on convergence—collaborations formed from deep integration across disciplines and knowledge systems to address vexing and complex research challenges that are pivotal for meeting societal needs (Wilson, 2019). The NNA initiative has funded over 100 individual and collaborative research projects since 2017, addressing topics ranging from thawing permafrost, to shifting weather patterns, increasing shipping, and adapting food systems. Research teams funded by NNA to work across the Arctic are composed of scientists from diverse disciplines, Indigenous knowledge holders, practitioners, planners, and engineers. 
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  3. Abstract

    The Pacific oceanic input to the Arctic via the Bering Strait (important for western Arctic ice retreat, water properties, and nutrient supply) has been increasing for three decades. Using satellite Ocean Bottom Pressure (OBP) and Dynamic Ocean Topography (DOT) data, we show that long‐term trends in mooring data for a well‐sampled sub‐period (2003–2014) relate to summer OBP and DOT drop in the Arctic's East Siberian Sea (ESS), in turn caused by stronger westward ESS winds, and increased fall westward winds in the Bering Sea. OBP/DOT differences imply strong (0.17 psu/year) ESS salinization, likely caused by hitherto unappreciated increased Pacific inflow to that region. We find ESS OBP trends are (erroneously) reversed in older data versions, and estimate that ESS salinization may significantly mediate Bering Strait flow increase. These facts may explain why models assimilating older OBP data, or with erroneous Bering Strait salinities, fail to simulate observed Bering Strait flow increase.

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