کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6697673 | 1428357 | 2018 | 50 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Remote estimation of complete urban surface temperature using only directional radiometric temperatures
ترجمه فارسی عنوان
برآورد از راه دور دمای سطح شهری تنها با استفاده از دمای رادیومتری هدایت شده
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کلمات کلیدی
سطح شهری، دمای سطح زمین، سنجش از راه دور حرارتی، دمای سطح شهری کامل، آنیزوتروپیک حرارتی شهری، مدل کرنل محور
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Complete urban surface temperature (Tc) is a key variable for quantifying the urban surface - atmosphere interactions. The estimation of Tc usually requires detailed knowledge of surface geometry and facet temperatures, which are difficult to obtain by remote sensing. Therefore, simple but efficient strategies for the remote estimation of Tc are currently lacking. Facing this challenge, we proposed a comprehensive solution to estimate Tc remotely using only the directional radiometric temperatures (DRTs) without the assistance of ground-based information. By comparing Tc with the nadir temperature (T0), DRTs within the entire hemisphere, and solid-angle integral temperature (SIT), we obtain the following results: (1) The optimal viewing azimuth and zenith angles at which the DRTs are the closest to Tc are Ïs±90° (Ïs is the solar azimuth angle) and 45-60°, respectively. (2) The estimation of Tc could be further improved once the DRTs from all-direction are available, and the MAE for the SIT that most closely approximated Tc is only 0.87â¯K. (3) The MAE of the SIT that best approximates Tc by combining only four DRTs and a kernel-driven model is only slightly higher than that of the specific SIT based on the original DRTs, indicating that the remote estimation of Tc using limited DRTs is plausible. These proposed strategies are generally simple and effective, and can help facilitate the estimation of Tc and therefore help advance the thermal remote sensing of urban climate and environment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Building and Environment - Volume 135, 1 May 2018, Pages 224-236
Journal: Building and Environment - Volume 135, 1 May 2018, Pages 224-236
نویسندگان
Lu Jiang, Wenfeng Zhan, James Voogt, Limin Zhao, Lun Gao, Fan Huang, Zhe Cai, Weimin Ju,