Title

Development and application of artificial neural network models to estimate values of a complex human thermal comfort index associated with urban heat and cool island patterns using air temperature data from a standard meteorological station

Document Type

Article

Source of Publication

International Journal of Biometeorology

Publication Date

7-1-2018

Abstract

© 2018, ISB. The present study deals with the development and application of artificial neural network models (ANNs) to estimate the values of a complex human thermal comfort-discomfort index associated with urban heat and cool island conditions inside various urban clusters using as only inputs air temperature data from a standard meteorological station. The index used in the study is the Physiologically Equivalent Temperature (PET) index which requires as inputs, among others, air temperature, relative humidity, wind speed, and radiation (short- and long-wave components). For the estimation of PET hourly values, ANN models were developed, appropriately trained, and tested. Model results are compared to values calculated by the PET index based on field monitoring data for various urban clusters (street, square, park, courtyard, and gallery) in the city of Athens (Greece) during an extreme hot weather summer period. For the evaluation of the predictive ability of the developed ANN models, several statistical evaluation indices were applied: the mean bias error, the root mean square error, the index of agreement, the coefficient of determination, the true predictive rate, the false alarm rate, and the Success Index. According to the results, it seems that ANNs present a remarkable ability to estimate hourly PET values within various urban clusters using only hourly values of air temperature. This is very important in cases where the human thermal comfort-discomfort conditions have to be analyzed and the only available parameter is air temperature.

ISSN

0020-7128

Publisher

Springer New York LLC

Volume

62

Issue

7

First Page

1265

Last Page

1274

Disciplines

Life Sciences

Keywords

Neural network architecture, Performance criteria, Physiologically Equivalent Temperature (PET) index, Thermal climate indices, Thermal sensation, Urban microclimate

Scopus ID

85049532112

Indexed in Scopus

yes

Open Access

no

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