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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >EFFECTS OF LONGWAVE CLOUD RADIATIVE FORCING ANOMALIES ON THE ATMOSPHERIC RESPONSE TO EQUATORIAL PACIFIC SEA SURFACE TEMPERATURE ANOMALIES
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EFFECTS OF LONGWAVE CLOUD RADIATIVE FORCING ANOMALIES ON THE ATMOSPHERIC RESPONSE TO EQUATORIAL PACIFIC SEA SURFACE TEMPERATURE ANOMALIES

机译：龙湾云辐射强迫异常对赤道太平洋海平面温度异常的大气响应的影响

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摘要

The latest version of the National Center for Atmospheric Research community climate model (CCM2) has been used to investigate cloud radiative forcing (CRF) anomalies associated with equatorial Pacific sea surface temperature (SST) anomalies and the effects of the longwave CRF (LWCRF) anomalies on the atmospheric response to the SST anomalies. The SST anomalies cause large CRF anomalies, both longwave and shortwave, as well as latent heat anomalies at low latitudes on a global scale. The relative magnitude of the simulated longwave and shortwave CRF anomalies is consistent with the result of the Earth Radiation Budget Experiment (ERBE), implying that cloud height and cloud radiative properties such as emissivity and reflectivity are well simulated by the model. The LWCRF anomaly strongly enhances the precipitation anomaly in the whole tropical belt. The positive (negative) LWCRF anomaly warms (cools) the troposphere and destabilizes (stabilizes) the upper troposphere. The LWCRF anomaly enhances the Southern Oscillation and the related Walker circulation anomaly. The effects of the LWCRF anomaly are essential to the northern hemispheric extratropical circulation anomaly, the Pacific/North American pattern. [References: 41]
机译：国家大气研究中心社区气候模型（CCM2）的最新版本已用于调查与赤道太平洋海表温度（SST）异常有关的云辐射强迫（CRF）异常以及长波CRF（LWCRF）异常的影响大气对海表温度异常的响应。 SST异常会导致大的CRF异常，包括长波和短波，以及全球范围内低纬度的潜热异常。模拟的长波和短波CRF异常的相对大小与地球辐射预算实验（ERBE）的结果一致，这表明该模型可以很好地模拟云的高度和云的辐射特性，例如发射率和反射率。 LWCRF异常强烈增强了整个热带带的降水异常。正（负）LWCRF异常会使对流层变暖（冷却）并使上对流层不稳定（稳定）。 LWCRF异常增强了南方涛动和相关的沃克环流异常。 LWCRF异常的影响对于北半球温带环流异常，太平洋/北美模式至关重要。 [参考：41]

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