Collaborative Research: Investigating Biogeochemical Fluxes and Linkages To Climate Change With Multi-Scale Observations In The Drake Passage

合作研究：通过德雷克海峡的多尺度观测研究生物地球化学通量及其与气候变化的联系

• 批准号: 1543457
• 负责人: David Munro
• 金额: $ 40.71万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1543457&HistoricalAwards=false
• 关键词: Collaborative; Research; Investigating; Biogeochemical; Fluxes

The Southern Ocean plays a key role in modulating the global carbon cycle, but the size and even the sign of the global ocean flux terms of the atmospheric burden of man-made CO2 are still uncertain. This is in part due to the lack of measurements in this remote region of the world ocean. This project continues a multi-year time series of shipboard chemical measurements in the Drake Passage to detect changes in the ocean carbon cycle and to improve the understanding of mechanisms driving natural variability and long-term change in the Southern Ocean.This project is a continuation of collection of upper ocean measurements of the underway surface partial pressure of carbon dioxide (pCO2), using frequent ferry crossings of the Drake Passage by the RV/AS LMGould, the USAP supply ship. Overall, more than 200 transects over the past decade (since 2002) have now been accumulated of pCO2 profiles, along with discrete samples for other parameters of interest in studying the ocean carbonate system such as total CO2 (TCO2) values, isotopic (13C/12C and 14C/12C) ratios in surface TCO2. The Drake Passage data are made readily available to the international science community and serve as both validation and constraints of remotely sensed observations and numerical coupled earth systems models.

南大洋在调节全球碳循环中起着关键作用，但全球海洋通量的大小甚至标志人造二氧化碳大气负荷的项仍然不确定。这在一定程度上是因为在这片世界海洋的偏远地区缺乏测量数据。该项目延续了德雷克海峡多年的船上化学测量时间序列，以探测海洋碳循环的变化，并提高对驱动南大洋自然变异性和长期变化的机制的理解。该项目是对上层海洋二氧化碳在航面分压(PCO2)测量的继续，使用USAP补给船RV/AS LMGould号频繁渡轮穿越德雷克海峡。总体而言，过去十年(自2002年以来)已经积累了200多个二氧化碳剖面，以及研究海洋碳酸盐系统感兴趣的其他参数的离散样本，如总二氧化碳(TCO2)值、表层TCO2的同位素(13C/12C和14C/12C)比值。国际科学界可以随时获得德雷克航道数据，作为对遥感观测和数值耦合地球系统模型的验证和约束。

项目成果

Global Carbon Budget 2022

• DOI: 10.5194/essd-14-4811-2022
• 发表时间: 2022-11-11
• 期刊: EARTH SYSTEM SCIENCE DATA
• 影响因子: 11.4
• 作者: Friedlingstein, Pierre;O'Sullivan, Michael;Zheng, Bo
• 通讯作者: Zheng, Bo

The Observed Seasonal Cycle of Macronutrients in Drake Passage: Relationship to Fronts and Utility as a Model Metric

观察到的德雷克海峡常量营养素的季节周期：与锋线和效用的关系作为模型指标

• DOI: 10.1029/2019jc015052
• 发表时间: 2019
• 期刊: Journal of Geophysical Research: Oceans
• 作者: Freeman, Natalie M.;Munro, David R.;Sprintall, Janet;Mazloff, Matthew R.;Purkey, Sarah;Rosso, Isabella;DeRanek, Carissa A.;Sweeney, Colm
• 通讯作者: Sweeney, Colm

Global Carbon Budget 2021

• DOI: 10.5194/essd-14-1917-2022
• 发表时间: 2022-04-26
• 期刊: EARTH SYSTEM SCIENCE DATA
• 影响因子: 11.4
• 作者: Friedlingstein, Pierre;Jones, Matthew W.;Zeng, Jiye
• 通讯作者: Zeng, Jiye

Global Carbon Budget 2019

• DOI: 10.5194/essd-11-1783-2019
• 发表时间: 2019-12-04
• 期刊: EARTH SYSTEM SCIENCE DATA
• 影响因子: 11.4
• 作者: Friedlingstein, Pierre;Jones, Matthew W.;Zaehle, Sonke
• 通讯作者: Zaehle, Sonke

The Variable and Changing Southern Ocean Silicate Front: Insights From the CESM Large Ensemble

变化无常的南大洋硅酸盐锋面：来自 CESM 大型系统的见解

• DOI: 10.1029/2017gb005816
• 发表时间: 2018
• 期刊: Global Biogeochemical Cycles
• 影响因子: 5.2
• 作者: Freeman, Natalie M.;Lovenduski, Nicole S.;Munro, David R.;Krumhardt, Kristen M.;Lindsay, Keith;Long, Matthew C.;Maclennan, Michelle
• 通讯作者: Maclennan, Michelle