A new Geoengineering Model Intercomparison Project (GeoMIP) experiment designed for climate and chemistry models
A new Geoengineering Model Intercomparison Project (GeoMIP) experiment designed for climate and chemistry models
复制标题
专为气候和化学模型设计的新地球工程模型比对项目 (GeoMIP) 实验
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
J. M. English
中科院分区：
文献类型：
--
作者：
S. Tilmes;M. Mills;U. Niemeier;H. Schmidt;A. Robock;B. Kravitz;J. Lamarque;G. Pitari;J. M. English
摘要。为了研究平流层气溶胶地球工程对大气、化学、动力学、气候和环境的影响，提出了一项新的地球工程模式比对计划（GeoMIP）实验“G4指定平流层气溶胶”（简称G4SSA）。与早期的G4 GeoMIP实验不同，该实验要求将二氧化硫（SO2）排放到模式中，而向社区提供了一个规定的气溶胶强迫文件，以便在2020年至2100年之间持续应用于未来的模式实验。该平流层气溶胶分布的总负荷约为2 Tg S，是使用ECHAM5-HAM微物理模型，基于连续的热带年排放8 Tg SO2 yr−1得出的。分布中包括在2年内2020年地球工程的增加和2070年的减少，而本底气溶胶负担应用于实验的最后30年。在多模型比较框架中使用气候和化学模型的实验性能将使我们能够更好地理解地球工程的影响及其在变化的环境中50年后的突然终止。纬向和月平均平流层气溶胶输入数据集可在https://www2.acd.ucar.edu/gcm/geomip-g4-specified-stratospheric-aerosol-data-set找到。
Abstract. A new Geoengineering Model Intercomparison Project (GeoMIP) experiment "G4 specified stratospheric aerosols" (short name: G4SSA) is proposed to investigate the impact of stratospheric aerosol geoengineering on atmosphere, chemistry, dynamics, climate, and the environment. In contrast to the earlier G4 GeoMIP experiment, which requires an emission of sulfur dioxide (SO2) into the model, a prescribed aerosol forcing file is provided to the community, to be consistently applied to future model experiments between 2020 and 2100. This stratospheric aerosol distribution, with a total burden of about 2 Tg S has been derived using the ECHAM5-HAM microphysical model, based on a continuous annual tropical emission of 8 Tg SO2 yr−1. A ramp-up of geoengineering in 2020 and a ramp-down in 2070 over a period of 2 years are included in the distribution, while a background aerosol burden should be used for the last 3 decades of the experiment. The performance of this experiment using climate and chemistry models in a multi-model comparison framework will allow us to better understand the impact of geoengineering and its abrupt termination after 50 years in a changing environment. The zonal and monthly mean stratospheric aerosol input data set is available at https://www2.acd.ucar.edu/gcm/geomip-g4-specified-stratospheric-aerosol-data-set .
影响因子：
4.4
作者：
Kravitz, Ben;Caldeira, Ken;Yoon, Jin-Ho
通讯作者：
Yoon, Jin-Ho