Intercomparison of radiative forcing calculations of stratospheric water vapour and contrails Intercomparison of radiative forcing calculations of stratospheric water vapour and contrails
Intercomparison of radiative forcing calculations of stratospheric water vapour and contrails Intercomparison of radiative forcing calculations of stratospheric water vapour and contrails
复制标题
平流层水汽和凝结尾辐射强迫计算的对比 平流层水汽和凝结尾辐射强迫计算的对比
DOI：
10.1127/0941-2948/2009/0411
复制
发表时间：
2009
影响因子：
1.2
通讯作者：
Myhre G
中科院分区：
文献类型：
--
作者：
Myhre G
7个小组参与了一项对平流层水汽（SWV）和尾迹造成的辐射强迫（RF）计算的相互比较研究。详细的辐射传输方案和全球尺度计算代码的结合，以及理想模拟和平流层水汽和尾迹的更现实的全球尺度变化的结合，已经被使用。详细的逐行代码在长波（LW）和短波（SW）射频的15%范围内一致，但有一种情况下差异为30%。由于尾迹和SWV变化引起的LW和SW RF是相反的符号，因此在单个LW和SW分量中看到的模式之间的差异可以在净RF中得到补偿或加强。因此，相对而言，净RF的不确定性要大得多。一些用于全球尺度SWV和尾迹变化模拟的模式在RF上与更详细的辐射传输方案有很大不同。对于全球尺度的计算，我们使用一种加权结果的方法来计算基于它们与理想模拟中更详细的辐射传输方案的性能的最佳估计。(源自)。
Seven groups have participated in an intercomparison study of calculations of radiative forcing (RF) due to stratospheric water vapour (SWV) and contrails. a combination of detailed radiative transfer schemes and codes for global-scale calculations have been used, as well as a combination of idealized simulations and more realistic global-scale changes in stratospheric water vapour and contrails. Detailed line-by-line codes agree within about 15% for longwave (LW) and shortwave (SW) RF, except in one case where the difference is 30%. Since the LW and SW RF due to contrails and SWV changes are of opposite sign, the differences between the models seen in the individual LW and SW components can be either compensated or strengthened in the net RF. and thus in relative terms uncertainties are much larger for the net RF. Some of the models used for global-scale simulations of changes in SWV and contrails differ substantially in RF from the more detailed radiative transfer schemes. For the global-scale calculations we use a method of weighting the results to calculate a best estimate based on their performance compared to the more detailed radiative transfer schemes in the idealized simulations. (orig.)