تقرير
State-dependence of CO2 Forcing and its Implications for Climate Sensitivity
| العنوان: | State-dependence of CO2 Forcing and its Implications for Climate Sensitivity |
|---|---|
| المؤلفون: | He, Haozhe, Kramer, Ryan J., Soden, Brian J., Jeevanjee, Nadir |
| سنة النشر: | 2022 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Atmospheric and Oceanic Physics |
| الوصف: | When evaluating the effect of CO2 changes on the earth's climate, it is widely assumed that instantaneous radiative forcing from a doubling of a given CO2 concentration (IRF2xCO2) is constant and that variances in climate sensitivity arise from differences in radiative feedbacks, or a dependence of these feedbacks on the climatological base-state. In this paper, we show that the IRF2xCO2 is not constant, but also depends on the climatological base-state, increasing by ~25% for every doubling of CO2, and has increased by ~10% since the pre-industrial era primarily due to stratospheric cooling, implying a proportionate increase in climate sensitivity. This base-state dependence also explains about half of the inter-model spread in IRF2xCO2, a problem that has persisted among climate models for nearly three decades. Comment: 17 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2210.12244 |
| رقم الأكسشن: | edsarx.2210.12244 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |