Validation of an urban canyon radiation model for nocturnal long-wave fluxes
Validation of an urban canyon radiation model for nocturnal long-wave fluxes
复制标题
夜间长波通量的城市峡谷辐射模型验证
DOI：
10.1007/bf00118866
复制
发表时间：
1991
影响因子：
4.3
通讯作者：
T. Oke
中科院分区：
文献类型：
--
作者：
J. Voogt;T. Oke
阿恩菲尔德的城市峡谷辐射模型（1976年，1982年）通过在由混凝土砌块构成的按比例缩小的城市峡谷内测量长波通量得到验证。定制设计的穿越系统允许微型辐射计在峡谷横截面的周长周围自动移动，从而提供单个模型网格点的验证。测量的辐射和模拟的辐射之间的一致性通常很好。两者在峡谷壁上的一些差异是由于难以实现精确的仪器定位。从测量的表面温度数据得出的模型结果与使用各种更可能在实际中使用的近似格式的结果进行了比较。基于峡谷表面温度的近似优于使用空气温度的近似。
The urban canyon radiation model of Arnfield (1976, 1982) is validated using measurements of long-wave fluxes taken within a scaled down urban canyon constructed from concrete building blocks. A custom-designed traversing system allowed miniature radiometers to be automatically moved around the perimeter of a canyon cross-section, thereby providing for the validation of individual model grid-points. The agreement between measured and modelled radiation is generally very good. Some differences between the two over the canyon walls are attributed to difficulties in achieving precise instrument orientation. Model results derived from the measured surface temperature data are compared to results using various approximation schemes more likely to be used in practice. Approximations based on canyon surface temperatures are superior to those using air temperature.