Radiative forcing since preindustrial times due to ozone change in the troposphere and the lower stratosphere
Radiative forcing since preindustrial times due to ozone change in the troposphere and the lower stratosphere
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DOI：
10.5194/acp-6-575-2006
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发表时间：
2005-08
影响因子：
6.3
通讯作者：
M. Gauss;G. Myhre;I. Isaksen;V. Grewe;G. Pitari;O. Wild;W. J. Collins;F. Dentener;K. Ellin
中科院分区：
文献类型：
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作者：
M. Gauss;G. Myhre;I. Isaksen;V. Grewe;G. Pitari;O. Wild;W. J. Collins;F. Dentener;K. Ellin
自工业化前时代以来，由于人为排放的增加，大气臭氧发生了变化。在ACCENT这一欧洲卓越网络内，通过七种化学气候模型和三种化学传输模型对1850年至2000年期间对流层和平流层下部（最高30公里）的臭氧变化进行了评估。模式化的臭氧变化被作为辐射强迫详细计算的输入。当只考虑化学变化时（气候不变），在10个参与模式中，模拟的自工业化前时期以来全球平均对流层臭氧柱的增加范围为7.9 DU至13.8 DU，而在考虑平流层化学的模式中，平流层臭氧柱的减少范围为14.1 DU至28.6 DU。由此产生的辐射强迫强烈地依赖于模拟的臭氧变化的位置和高度，并且由于对流层中的臭氧变化而在0.25 Wm2和0.45 Wm2之间变化，并且由于平流层臭氧变化而在0.123 Wm2和+0.066 Wm2之间变化。
Changes in atmospheric ozone have occurred since the preindustrial era as a result of increasing anthro- pogenic emissions. Within ACCENT, a European Network of Excellence, ozone changes between 1850 and 2000 are assessed for the troposphere and the lower stratosphere (up to 30 km) by a variety of seven chemistry-climate models and three chemical transport models. The modeled ozone changes are taken as input for detailed calculations of radia- tive forcing. When only changes in chemistry are considered (constant climate) the modeled global-mean tropospheric ozone col- umn increase since preindustrial times ranges from 7.9 DU to 13.8 DU among the ten participating models, while the stratospheric column reduction lies between 14.1 DU and 28.6 DU in the models considering stratospheric chemistry. The resulting radiative forcing is strongly dependent on the location and altitude of the modeled ozone change and varies between 0.25 Wm 2 and 0.45 Wm 2 due to ozone change in the troposphere and 0.123 Wm 2 and +0.066 Wm 2 due to the stratospheric ozone change.