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The impact of urban morphology and land cover on the sensible heat flux retrieved by simultaneous satellite and in-situ observations

机译：城市形态和土地覆盖对同时进行卫星和实地观测获得的感热通量的影响

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摘要

Retrieval of sensible heat flux requires the input of, among others, temperature gradient and wind speed. The lower level of temperature measurement is commonly replaced by remotely-sensed radiative surface temperature. Studies that utilize simultaneous satellite and in-situ retrievals of sensible heat flux are scarce. In this paper, we present preliminary results of the analyses of the impact of urban morphology and land cover on the sensible heat flux. It was calculated by two approaches, the first was based on satellite observations of radiative surface temperature and the second utilized in-situ measurements of road kinetic temperature. Except for the surface temperature, for both approaches we used the same input parameters. Road kinetic temperature and wind speed were measured by automatic road weather network. Nine stations were located across the city of Warsaw outside the city centre in low-rise urban structure. A time series of MODIS thermal data for the period 2005-2014 was utilized.
机译：显热通量的检索需要输入温度梯度和风速等。较低的温度测量值通常由遥感辐射表面温度代替。很少有利用卫星和原位同时获取显热通量的研究。在本文中，我们提供了分析城市形态和土地覆盖对显热通量的影响的初步结果。它是通过两种方法计算的，第一种是基于卫星对辐射表面温度的观测，第二种是利用道路动力学温度的原位测量。除了表面温度，对于这两种方法，我们都使用相同的输入参数。道路动力学温度和风速通过自动道路气象网络进行测量。在市中心以外的低层城市结构中，华沙市有9个车站。利用了2005年至2014年期间MODIS热数据的时间序列。

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