安德烈-达顿 地球化学家和古气候学家

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Andrea Dutton
Geochemist and Paleoclimatologist | Class of 2019
Furthering current understanding of sea level dynamics by reconstructing the extent and rate of sea level rise in the ancient past.


Portrait of Andrea Dutton

Title
Geochemist and Paleoclimatologist
Affiliation
Department of Geoscience, University of Wisconsin / Madison
Location
Madison, Wisconsin
Age
46 at time of award
Area of Focus
Oceanography, Atmospheric Sciences, and Meteorology, Earth Sciences
Website
University of Wisconsin: Andrea Dutton
Social
Twitter
Published September 25, 2019
ABOUT ANDREA'S WORK
Andrea Dutton is a geochemist and paleoclimatologist reconstructing sea levels and ice sheet changes during earlier periods of global warming on Earth. A robust understanding of the ancient interactions among global temperatures, ice volumes, and sea levels is critical for assessing the magnitude and rate of future sea level rise due to climate change. Dutton has developed a strategy for using the geological record of ancient shorelines to quantify the global sea level of the last interglacial period (approximately 125,000 years ago), when the global climate was similar to present day.

She undertakes fieldwork around the world to painstakingly collect fossilized corals that grew below sea level during this period but are now embedded in dry land. Leveraging tools from sedimentology, isotopic geochemistry, and paleoceanography, she is able to date the corals and establish critical features of past oceans, such as past sea level, as well as the rate of growth of the coral reefs—an indicator of how quickly the sea level rose. With her collaborators, Dutton combines these field data with modeling of topographic adjustments due to ice melt and ice-sheet gravitational effects to demonstrate convincingly that the sea level during the last interglacial period was at least several meters higher than present. This implies significant melting of the Greenland and Antarctic ice sheets and indicates that parts of the Antarctic ice sheet may be unstable under current greenhouse gas levels. Understanding how polar ice sheets lost mass and contributed to sea level rise during past warm periods provides insights into their sensitivity to climate changes and improves prognostic models for ice sheet response and sea level rise in the coming century. Dutton is working to further refine estimates of future sea level rise through her collaboration on the development of a publicly available dataset of standardized coral isotope-based data.

More recently, Dutton has broadened the scope of her work to include communication to the general public about the risks we face in the future due to sea level rise and climate change. Her deep understanding of the past enables her to visualize and authoritatively communicate the urgent need for coastal communities to plan today for a changing environment. Through both her research and public engagement, Dutton is improving predictions of sea level rise and providing society with the information it needs to mitigate and adapt to the effects of climate change.

BIOGRAPHY
Andrea Dutton received a B.A. (1995) from Amherst College and an M.S. (2000) and Ph.D. (2003) from the University of Michigan. Dutton was a postdoctoral fellow (2004–2005) and research fellow (2006–2010) at The Australian National University and a faculty member of the Department of Geological Sciences at the University of Florida from 2011 to 2019. In fall 2019, she joined the faculty of the University of Wisconsin-Madison, where she is a visiting associate professor in the Department of Geoscience. Her articles have been published in such scientific journals as Science, Nature Geoscience, Nature Communications, Geophysical Research Letters, and Geology, among others.



安德烈-达顿
地球化学家和古气候学家 | 2019级
通过重建古代海平面上升的程度和速度，进一步了解当前的海平面动态。


安德烈-达顿的画像

标题
地球化学家和古气候学家
工作单位
威斯康星大学/麦迪逊分校地球科学系
工作地点
麦迪逊，威斯康星州
年龄
获奖时46岁
重点领域
海洋学、大气科学和气象学、地球科学
网站
威斯康辛大学。Andrea Dutton
社会
推特
2019年9月25日出版
关于安德里亚的工作
安德烈-达顿是一位地球化学家和古气候学家，他正在重建地球上早期全球变暖时期的海平面和冰原变化。对全球温度、冰量和海平面之间的古代互动关系的有力理解，对于评估气候变化导致的未来海平面上升的规模和速度至关重要。达顿开发了一种策略，利用古代海岸线的地质记录来量化最后一个间冰期（大约12.5万年前）的全球海平面，当时的全球气候与今天相似。

她在世界各地进行实地考察，不辞辛劳地收集这一时期生长在海平面以下、但现在嵌入干燥土地的珊瑚化石。利用沉积学、同位素地球化学和古海洋学的工具，她能够确定这些珊瑚的日期，并确定过去海洋的关键特征，如过去的海平面，以及珊瑚礁的生长速度--这是海平面上升速度的指标。与她的合作者一起，达顿将这些实地数据与冰雪融化和冰层引力效应导致的地形调整的模型相结合，令人信服地证明了在最后一个冰期期间，海平面至少比现在高几米。这意味着格陵兰岛和南极洲冰盖的显著融化，并表明在目前的温室气体水平下，南极洲冰盖的部分可能是不稳定的。了解极地冰盖如何在过去的温暖时期失去质量并导致海平面上升，可以深入了解它们对气候变化的敏感性，并改善下个世纪冰盖反应和海平面上升的预言模型。达顿正在努力通过合作开发一个公开的基于标准化珊瑚同位素的数据集，进一步完善对未来海平面上升的估计。

最近，达顿扩大了她的工作范围，包括向公众宣传我们在未来因海平面上升和气候变化而面临的风险。她对过去的深刻理解使她能够直观和权威地传达沿海社区今天为不断变化的环境进行规划的迫切需求。通过她的研究和公众参与，达顿正在改善对海平面上升的预测，并为社会提供缓解和适应气候变化影响所需的信息。

个人简历
安德烈-达顿在阿默斯特学院获得学士学位（1995年），在密歇根大学获得硕士学位（2000年）和博士学位（2003年）。达顿曾在澳大利亚国立大学担任博士后（2004-2005年）和研究员（2006-2010年），2011年至2019年在佛罗里达大学地质科学系任教。2019年秋季，她加入了威斯康星大学麦迪逊分校的教师队伍，是该校地质科学系的客座副教授。她的文章发表在《科学》、《自然-地球科学》、《自然-通讯》、《地球物理研究通讯》和《地质学》等科学期刊上，等等。