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CESS Ph.D. Candidate Tong Dan published collaboratively a paper on Nature Geoscience revealing the impact of international trade on radiative forcing

  
 

On September 6th, Tsinghua University Center for Earth System Science Ph.D candidate Tong Dan published online a research article on Nature Geoscience as the first author, named "Global climate forcing of aerosol embodied in international trade". This article firstly revealed that aerosol pollution embodied in international economic trade will impact the direct radiative forcing. School of Physics, Peking University, Professor Lin Jintai is the collaborative first author. And Professor Lin Jintai from Peking University, Professor Zhang Qiang from Tsinghua University, and Professor Huang Yi from McGill University are collaborative corresponding authors.

 

It emits lots of pollutes and greenhouse gases during the producing progress of industrial products, leading to regional air pollution and climate change. Aerosols will change the energy balance and radiative forcing in climate system by absorbing and scattering solar radiation and the interaction with clouds and precipitation. Under the global economy background, international trade means the separation of consuming region producing region, which indicates that corresponding emitted pollutes will be transferred from consuming region to producing region. As a result the regional distribution of global pollutes emission and its environmental and climate effect will change. Therefore, international trade is of great significance to atmosphere and climate change.

 

 

Figure 1. net aerosol emissions embodied in trade in 2007.

 

This three-year collaborative research was conducted by research groups from Tsinghua University, Peking University and McGill University. This research qualified the aerosol emission induced by producing and consuming from 11 regions all over the world, revealing that the direct radiative forcing change led by aerosols emission is related to regional consuming activities. They found out that east asia (especially China) is the major net emission region (Figure 1). They also pointed out that global aerosol radiative forcing due to emissions produced in East Asia is 10-18% stronger than the forcing related to goods and services ultimately consumed in that region. And in some developed countries like western Europe, North America and Japan, their aerosol radiative forcing due to consuming is much more stronger. Due to the comparatively short time of aerosols staying in atmosphere, this difference of radiative forcing is important to climate system. Results showed that the impact of atmosphere pollutes on climate is not only related to global economic production, but also related to consumption. This is significant to figure out the relationship among economy-trade-emission-climate and help make effective global environment policy and collaborative emission reduction policy.

 

 

Figure 2. Tong Dan and her advisor Academician He Kebin(left) and Professor Zhang Qiang(right)

 

Tong Dan graduated from Beijing University of Aeronautics and Astronautics, and was recommended to CESS of Tsinghua University for Ph.D degree, and her advisor is Professor He Kebin. Her research field is mainly focus on quantification of atmosphere pollutes on global scale.

 

Article link: http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2798.html

 

(Translated by Mengmiao Yang)

 

 

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