Implementation of tritium in the General Circulation Model MIROC to investigate the dynamics of the hydrological cycle

在大气环流模型 MIROC 中使用氚来研究水文循环的动态

• 批准号: 22K20379
• 负责人: CAUQUOIN ALEXANDREPHILIPPE
• 金额: $ 1.83万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Research Activity Start-up
• 财政年份: 2022
• 资助国家: 日本
• 起止时间: 2022-08-31 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22K20379/
• 关键词: tritium; MIROC; solar activity; water cycle; stratosphere; water isotopes; GCM

General circulation models (GCMs) are used to study the Earth's climate system and project its future changes. However, the representation of the water cycle in these models remains a challenge. So, this project provides the incorporation of the tracer tritium into the MIROC Earth system model to improve the modeling of the hydrological cycle. Tritium is a very valuable tracer of the water cycle because it is a strong marker of the involved reservoirs such as the stratosphere, the troposphere and the oceans.This tracer has been successfully implemented in the isotopic version of the atmospheric GCM MIROC5, MIROC5-iso. Next, I used for the first time the natural tritium production modulated by solar activity to run a simulation over the period 1979-2018 to study the impact of solar activity on the water cycle and climate.Anthropogenic tritium production by nuclear bombs in the 1960s is coded and will be tested very soon.This work will be presented in July 2023 at the Hydrology Symposium of the IAEA in Vienna, Austria.

大气环流模式（GCM）用于研究地球的气候系统和预测其未来的变化。然而，在这些模型中的水循环的代表性仍然是一个挑战。因此，该项目提供了将示踪剂氚纳入MIROC地球系统模型，以改善水文循环的建模。氚是一种非常有价值的水循环示踪剂，因为它是平流层、对流层和海洋等相关储层的强标记物。接下来，我首次使用太阳活动调制的天然氚产生量来模拟1979-2018年期间太阳活动对水循环和气候的影响。20世纪60年代核弹造成的人为氚产生量已编码，并将很快进行测试。这项工作将于2023年7月在维也纳举行的国际原子能机构水文研讨会上发表，奥地利.

项目成果

Effects of LGM sea surface temperature and sea ice extent on the isotope-temperature slope at polar ice core sites

末次盛冰期海面温度和海冰范围对极地冰芯位点同位素温度斜率的影响

• 发表时间: 2023
• 作者: Tomoya Naito;Gianluca Colo;Haozhao Liang;Xavier Roca-Maza;and Hiroyuki Sagawa;内藤智也;Tomoya Naito;辻直希;Tomoya Naito;Keita Mizukoshi;辻直希;Tomoya Naito;辻直希;Tomoya Naito;Naoki Tsuji;内藤智也;Alexandre Cauquoin
• 通讯作者: Alexandre Cauquoin

Implementation of tritium in the Atmospheric General Circulation Model MIROC5-iso to investigate the dynamics of the hydrological cycle

在大气环流模型 MIROC5-iso 中使用氚来研究水文循环的动态

• 发表时间: 2023
• 作者: Tomoya Naito;Gianluca Colo;Haozhao Liang;Xavier Roca-Maza;and Hiroyuki Sagawa;内藤智也;Tomoya Naito;辻直希;Tomoya Naito;Keita Mizukoshi;辻直希;Tomoya Naito;辻直希;Tomoya Naito;Naoki Tsuji;内藤智也;Alexandre Cauquoin;Alexandre Cauquoin;Alexandre Cauquoin
• 通讯作者: Alexandre Cauquoin