Decadal Anthropogenic Carbon Storage Along P16 and P02

Brendan R Carter, University of Washington, JISAO, Seattle, WA, United States, Richard A Feely, NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States, Lynne D Talley, University of California San Diego, La Jolla, CA, United States, Jessica N Cross, University of Alaska Fairbanks, Fairbanks, AK, United States, Alison M Macdonald, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Sabine Mecking, University of Washington Seattle Campus, Seattle, WA, United States and Samantha A Siedlecki, Univ of Washington-JISAO, Seattle, WA, United States
Abstract:
The Pacific Ocean has the largest ocean basin anthropogenic carbon (Canth) inventory due to the large size of the basin. We estimate anthropogenic carbon (Canth) concentrations and decadal storages along the meridional P16 and zonal P02 lines since the mid 90s using a modified version of the extended multiple linear regression (EMLR) technique with data from the WOCE, CLIVAR, and GO-SHIP occupations of these lines. We present our estimates and map the aragonite saturation state (ΩA) decreases and saturation horizon shoaling resulting from continued Canth storage. The average storage rate was larger along both sections during the most recent decade (2000’s to 2010’s) than during the previous decade (1990’s to 2000’s), especially along P02. Significant decadal concentration increases were found in the mixed layers, shallow thermoclines, mode waters, and portions of the intermediate water masses.
Back to: From WOCE through CLIVAR to GO-SHIP: Results from Global Repeat Hydrographic Surveys I