Major boreal forest disturbance and associated carbon emissions have been reported in the coldest region of the Northern Hemisphere. Related biophysical feedbacks to climate remain highly uncertain but might reduce warming effects expected from carbon emissions. This study quantifies albedo change after disturbance, primarily fires, in larch‐dominated forests around Yakutsk as compared to undisturbed areas with natural albedo variability, using satellite‐based time series. The related annual mean shortwave radiative forcing was −6.015 W/m² for the 13 years following forest disturbance. It was highly negative during snow‐covered months (−3.738 to −13.638 W/m²), but positive (+5.441 W/m²) for the summer months in the first year after disturbance, decreasing afterward and also turning into a negative forcing after 5 years. Forcing by surface shortwave radiation must be considered to assess the impact of boreal forest disturbance on climate and additional feedbacks, such as increased permafrost thaw or transition to alternative ecosystem states.

中文翻译：

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西伯利亚东部北部森林扰动后的植被轨迹和短波辐射强迫

据报道，北半球最冷的地区出现了严重的北方森林扰动和相关的碳排放。对气候的相关生物物理反馈仍然高度不确定，但可能会减少碳排放预期的变暖影响。这项研究使用基于卫星的时间序列，对雅库茨克周围落叶松为主的森林与自然反射率可变的未扰动地区相比，扰动后主要是火灾造成的反射率变化进行了量化。森林扰动后的13年中，相关的年平均短波辐射强迫为−6.015 W / m ²。在大雪覆盖的月份（−3.738至−13.638 W / m ²），其高度为负，但为阳性（+5.441 W / m ^2）。）在扰乱后的第一年的夏季月份，此后逐渐减少，并在5年后变为负强迫。必须考虑表面短波辐射的强迫来评估北方森林干扰对气候和其他反馈的影响，例如增加的永冻土融化或过渡到其他生态系统状态。