Microscale Warming due to Poor Ventilation at Surface Observation Stations
Microscale Warming due to Poor Ventilation at Surface Observation Stations
复制标题
地面观测站通风不良导致小规模变暖
DOI：
10.1175/jtech-d-18-0176.1
复制
发表时间：
2019
影响因子：
2.2
通讯作者：
Kondo Junsei
中科院分区：
文献类型：
--
作者：
Sugawara Hirofumi;Kondo Junsei
地面观测站的屏幕水平气温测量受到当地尺度因素的影响。这些当地影响可能会影响全球范围的气候变化研究。这项研究调查了日本气候观测站表面障碍物对屏幕水平气温测量的影响。在两个相邻地点（相距 <100 m）同时测量屏幕水平空气温度，这两个地点的开放程度不同。较窄地点白天气温升高 0°–1°C，理论分析表明，这种变暖是由于通风不良造成的。实验和理论分析都证明了夜间狭窄场地通风不良导致气温降低0°~0.2°C。本研究中显示的由于场地缩小而导致的温度变化范围在气候变化研究中是不可忽视的。因此，从站点开放性的角度提出了站点维护和元数据重新编码的指导方针。
Screen-level air temperature measurements at surface observation stations are influenced by local-site-scale factors. These local influences may affect global-scale climate change studies. This study investigated the influence of surface obstacles on air temperature measurements at the screen level at climate observation stations in Japan. Screen-level air temperature was measured simultaneously at two neighboring sites (<100 m apart) that differed in terms of their openness. Daytime air temperature was 0°–1°C higher at the narrower site, and theoretical analysis revealed that this warming was caused by poor ventilation. At night, poor ventilation at the narrower site caused the air temperature to be 0°–0.2°C lower, which was demonstrated experimentally and by theoretical analysis. The range of temperature changes due to site narrowing shown in this study is not negligible in climate change studies. Guidelines for site maintenance and metadata recoding were consequently proposed in terms of site openness.