Search

Showing total 2 results
2 results

1. Mean Daily Temperature Estimations and the Impact on Climatological Applications.

Author

Kolyvas, Charalampos, Missiakoulis, Spyros, and Gofa, Flora

Subjects
CLIMATE change, SEASONAL temperature variations, TEMPERATURE measurements, CLIMATOLOGY
Abstract

Climate variation in temperature describes the fluctuations that occur above or below the average temperature over time. This study focuses on the analysis of various approaches for calculating the average temperature to better capture and represent the true average temperature over the course of a day. As the conventional approach often fails to integrate significant behaviors of temperature variations, nine mathematical formulas are employed with a different number of daily observations. Specifically, this study inserts the geometric and harmonic mean and their variations for the estimation of the average temperature. Furthermore, the application of the formulas to the time series of temperature recordings for three station locations in Greece is analyzed. For the evaluation of the results, six widely used statistical indices for quantifying errors are applied, and their relative effects are also discussed. Finally, as a practical application of the impact of the formula used for the averaging of daily temperature, the various approaches are introduced on the same observation dataset for the estimation of the heating degree-days, an index that can have significant climatological and economic implications over a region. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

2. Urban surface temperature and microclimate measurements in Thessaloniki

Author

Kantzioura, A., Kosmopoulos, P., and Zoras, S.

Subjects
*URBAN temperature, *URBANIZATION, *URBAN heat islands, *TEMPERATURE measurements, *CLIMATE change
Abstract

Abstract: The urbanization and the deficiencies in proper development control have as consequence the environment''s degradation in urban centres and the change of microclimatic conditions. So, the urban microclimate of densely built areas is characterized by higher temperatures than the temperature of the suburbs and surrounding areas. Heating of the atmosphere and surfaces in urban areas compared to their surroundings is the phenomenon which is called urban heat island (UHI). The effect of building''s volume is considered as one of the main reasons for the urban heat island effect. Buildings, roads and paved surfaces, store the heat during the day and then release it slowly during the evening keeping the air temperature of the city hotter than surrounding areas. In other words, urban heat island cause thermal discomfort and it is responsible for the increase of energy demand in the buildings. This paper presents a study that aims at investigating the influence of urban morphology in microclimatic conditions. The investigation is carried out in Thessaloniki, Greece. The purpose of the research project is to measure how the temperature of building''s surfaces vary and interact during the day and according to the microclimatic parameters. There is a daily measurement of the examinated factors. Street orientation and configuration of the building blocks (height of buildings, width of road) are also important factors for the analysis of the measurements. [Copyright &y& Elsevier]

Published
2012
Full Text
View/download PDF