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Effects of radiative forcing on stable boundary layer development and diurnal temperature range over the central Heihe River Basin, China
Atmospheric Science Letters ( IF 2.0 ) Pub Date : 2020-09-14 , DOI: 10.1002/asl.1011 Bangjun Cao 1 , Lingzhi Zhu 1 , Yijing Zheng 1 , Bing Du 2 , Yuhui Kong 1 , Xi Sun 1 , Yao Wu 1 , Caili Chen 1 , Yu Zhang 1
Atmospheric Science Letters ( IF 2.0 ) Pub Date : 2020-09-14 , DOI: 10.1002/asl.1011 Bangjun Cao 1 , Lingzhi Zhu 1 , Yijing Zheng 1 , Bing Du 2 , Yuhui Kong 1 , Xi Sun 1 , Yao Wu 1 , Caili Chen 1 , Yu Zhang 1
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Using observations from the Heihe Watershed Allied Telemetry Experimental Research (HiWATER) datasets, the effect of radiative forcing on the development of the stable boundary layer (SBL) and diurnal temperature range (DTR) during summer over the central Heihe River Basin is investigated in this paper. Using a radiative temperature scale based on net longwave radiation (LWnet24), the DTR and the strength of SBL (δTS) are scaled, and the cycle and the year‐to‐year variability before and after scaling are analyzed. The results show that both DTR from air and surface temperatures have a significant correlation with LWnet24, and their correlation coefficients are different over different underlying surfaces. The cycle of DTR from 5‐m air temperature is similar with that of LWnet24. There is only a diurnal cycle in terms of 5‐m air temperature after scaling. Both the trends of the scaled DTR (DTRsc) and the scaled strength of SBL (δTSsc) increase with the growth time of the stable boundary layer (SBL) (τS). The period of τS is similar with that of DTRsc. τS is longer at the oasis site than at the Gobi site, which is related to the oasis effect. In addition, the greater the friction velocity, the smaller the DTRsc and δTSsc. The wind shear enables heat to disperse during SBL.
中文翻译：
黑河中部地区辐射强迫对稳定边界层发育和昼夜温度范围的影响
利用黑河流域联合遥测实验研究（HiWATER）数据集的观测资料，研究了辐射强迫对黑河流域中部夏季夏季稳定边界层（SBL）和昼夜温度范围（DTR）发育的影响。纸。使用基于净长波辐射（LW一辐射温标net24），DTR和SBL的强度（δ Ť小号缩放之前和之后）进行缩放，并且循环和年与年变化进行了分析。结果表明，空气中的DTR和地表温度都与LW net24显着相关。，并且它们的相关系数在不同的基础表面上是不同的。从5 m气温开始的DTR循环与LW net24相似。缩放后，只有5 m的气温昼夜周期。两个经缩放的DTR（DTR的趋势SC）和SBL的经缩放的强度（δ Ť SSC）增加与稳定边界层（SBL）的生长时间（τ小号）。的周期τ小号是与DTR的类似SC。τ小号是在现场绿洲比在戈壁网站，这是相关的绿洲效果长。另外，摩擦速度越大，DTR sc越小和δ Ť SSC。风切变使热量能够在SBL期间散布。
更新日期：2020-09-14
中文翻译：
黑河中部地区辐射强迫对稳定边界层发育和昼夜温度范围的影响
利用黑河流域联合遥测实验研究（HiWATER）数据集的观测资料，研究了辐射强迫对黑河流域中部夏季夏季稳定边界层（SBL）和昼夜温度范围（DTR）发育的影响。纸。使用基于净长波辐射（LW一辐射温标net24），DTR和SBL的强度（δ Ť小号缩放之前和之后）进行缩放，并且循环和年与年变化进行了分析。结果表明，空气中的DTR和地表温度都与LW net24显着相关。，并且它们的相关系数在不同的基础表面上是不同的。从5 m气温开始的DTR循环与LW net24相似。缩放后，只有5 m的气温昼夜周期。两个经缩放的DTR（DTR的趋势SC）和SBL的经缩放的强度（δ Ť SSC）增加与稳定边界层（SBL）的生长时间（τ小号）。的周期τ小号是与DTR的类似SC。τ小号是在现场绿洲比在戈壁网站，这是相关的绿洲效果长。另外，摩擦速度越大，DTR sc越小和δ Ť SSC。风切变使热量能够在SBL期间散布。
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