ANÁLISE DO CONFORTO TÉRMICO HUMANO NO MUNICÍPIO DE ARAPIRACA – ALAGOAS, UTILIZANDO SOFTWARE MATLAB (ANALYSIS OF THE HUMAN THERMAL COMFORT THE CITY OF ARAPIRACA - ALAGOAS USING SOFTWARE MATLAB)

Foram obtidas medidas das variáveis meteorológicas temperatura do ar, umidade relativa do ar e velocidade do vento através da estação automática instalada em Arapiraca com a finalidade de monitorar as condições de tempo no município em diferentes períodos (época chuvosa e seca). Sendo utilizado o índice de desconforto (ID), o índice de desconforto de Kawamura (IDK), índice da temperatura efetiva (TE) e o índice de temperatura efetiva em função do vento (TEV). Os valores mais elevados dos índices que foram registrados para o período chuvoso, foram do índice id com aproximadamente 2,5 °C acima dos valores observados da temperatura do ar (em média 26,5 °C), caracterizando crescente desconforto para os indivíduos locais. Para o período seco não houve registros de grandes variações entre os respectivos índices. E assim como no período chuvoso, os valores mais elevados no período seco foram do índice id, indicando nesse período também forte desconforto. Os valores obtidos estiveram condizentes com a literatura, sendo a sensação térmica mais preponderante durante o inverno. E, de acordo com as variações, em todo período de estudo (05 de maio de 2008 a 05 de maio de 2011) a população foi submetida aos alertas de atenção e muito cuidado, situação esta que pôde provocar fadiga ou cãibras, esgotamento e insolação nos casos de exposição prolongada e atividade física. A B S T R A C T Measurements of meteorological variables air temperature, relative humidity and wind speed by automatic station installed in Arapiraca in order to monitor the weather conditions in the city in different periods (dry and rainy season) were obtained. Being used the discomfort index (ID), the discomfort index of Kawamura (IDK), index of effective temperature (TE) and the index of effective temperature as a function of wind (TEv). Higher index values that were recorded for the rainy season, the index id were approximately 2.5 ° C above the observed values of air temperature (average 26.5 ° C), indicating increasing discomfort for local individuals . For the dry period there were no reports of large variations between the respective indices. And just as the rainy season, the highest values in the dry season were the index id, indicating that period also strong discomfort. The values obtained were consistent with the literature, the most predominant wind chill during the winter. And, according to the variations in the study period (May 5, 2008 to 05 maio 2011) the population was subjected to warnings of attention and care, a situation that could cause fatigue or cramps, exhaustion and heat stroke in cases of prolonged exposure and physical activity. Key-Words: Urban climate. Thermal comfort Human. Bioclimatic

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Análise de Microclimas na Cidade de Viçosa do Ceará: Abordagem na Perspectiva do Conforto Térmico (Analysis of the Microclimate in Viçosa Ceará: Approach in View of Thermal Comfort)

Revista Brasileira de Geografia Física ◽

10.26848/rbgf.v5i1.232753 ◽

2012 ◽

Vol 5 (1) ◽

pp. 47 ◽

Cited By ~ 1

Author(s):

Filipe Da Silva Peixoto ◽

Marta Celina Linhares Sales

Keyword(s):

Thermal Comfort ◽

Effective Temperature ◽

Urban Climate ◽

City Centre ◽

Heat Island ◽

Humid Climate ◽

Heat Islands ◽

Environmental Features ◽

Different Types ◽

The City

O estudo foi realizado na cidade de Viçosa do Ceará, cujas características geoambientais proporcionam um tipo climático de enclave úmido, ou seja, resulta em uma área de maior umidade e menor temperatura média isso devido ao efeito da altitude, em meio às áreas mais rebaixadas que configuram a depressão sertaneja, portanto, são áreas de condições geoambientais mais favoráveis ao conforto térmico. Buscou-se nos pontos de análise a distinção de diferentes tipos de uso e ocupação do solo, associado às características naturais que causam diferentes microclimas intraurbanos. Esses foram analisados através do levantamento de dados de temperatura do ar, temperatura efetiva, umidade do ar, e altitude. O levantamento foi realizado entre às 08 e 17 horas no dia 29 de outubro de 2009, período de primavera no hemisfério sul, correspondente ao período quente e seco no nordeste setentrional. Os dados foram tratados de forma a evidenciar os diferentes microclimas qualitativa e espacialmente, através de gráficos comparativos e mapa de isolinhas de temperatura efetiva. Foi observado que sob o efeito das ilhas de calor, identificadas nos pontos dois (Centro da Cidade) e três (Praça do Coreto), a atmosfera do local se comporta de maneiras distintas, e esses pontos caracterizaram-se pela conservação de temperatura efetiva de 26 ºC às 15 horas, quando em condições normais essa temperatura tenderia a um decréscimo maior, situação observada nos demais pontos ambos com 24,8 ºC às 15 horas. A atmosfera da cidade de Viçosa do Ceará sofre o fenômeno da ilha de calor, que se mostra no espaço onde o uso e ocupação do solo são mais intensificados. Palavras- chaves: Clima urbano. Viçosa do Ceará. Espaço Urbano. Analysis of the Microclimate in Viçosa Ceará: Approach in View of Thermal Comfort ABSTRACTThe study was conducted in Viçosa do Ceará, whose geo-environmental features provide a kind of enclave humid climate, which in the state of Ceará is configured as an area of geo-environmental conditions more favorable for thermal comfort. Sought on the points of analysis to distinguish different types of land use and land cover, associated with natural features that cause different microclimates in space city. These were analyzed using the survey data of air temperature, actual temperature, humidity, and altitude. The survey was conducted between at 08 and 17 hours on October 29, 2009, the data were treated to highlight the qualitatively different microclimates and spatially, through graphs and comparative map of isolines of effective temperature. We note that under the effect of heat islands, identified in section 2 (City Centre) and 3 (Square Bandstand), the atmosphere of the site behaves differently, and these points were characterized by the conservation of effective temperature of 26 C for 15 hours, when this temperature under normal conditions would tend to a larger decrease observed in the other two points to 24.8 º C at 15 hours. The atmosphere of the city of Viçosa do Ceará suffers the heat island phenomenon, which appears in the space where the use and occupation are more intensified. Keywords: Urban climate. Viçosa- Ce. Space Urban.

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Microclima e a arborização: o caso de duas áreas do Núcleo Marabá Pioneira, Marabá - Pará

Revista Ecologia e Nutrição Florestal - ENFLO ◽

10.5902/2316980x20965 ◽

2016 ◽

Vol 4 (2) ◽

pp. 54

Author(s):

Antônio Pereira Júnior ◽

Edmir Dos Santos Jesus ◽

Milka Beatriz Faval Bastos ◽

Rafael Victor Castro Santos

Keyword(s):

Quality Of Life ◽

Relative Humidity ◽

Thermal Comfort ◽

Air Temperature ◽

Thermal Sensation ◽

Urban Climate ◽

Air Humidity ◽

Discomfort Index ◽

Opposite Tendency

Studies of the urban climate involve numerous climatic variables, such as temperature, air humidity and vegetation. The objective of this research was to determine the trend of two meteorological variables (air temperature relative humidity), in relation to the arborization, sensation and thermal hygrometric perception of the population in the microclimate of two areas (A1 = Avenue Antônio Maia; A2 = Street 5 de Abril) Core Marabá Pioneira. For the measurement of temperature and humidity of the air, the methodology recommended by the Agronomic Institute of Campinas (IAC), adapted for the schedules and collection numbers, was applied. To obtain data on thermal comfort, seventy mixed forms were applied for two consecutive days at 12 hours. The thermal sensation was classified per the contained in the Predicted Mean Vote (PMV) and the discomfort, with the Thom Discomfort Index (ID). Twelve daily readings (6:00 a.m. to 5:00 p.m.) were carried out at each hour in the four meteorological shelters (two in each area) during 23 days of July 2015. The results indicated that the air temperature has tendencies to elevation, The relative humidity of the air, presents opposite tendency. The thermal sensation is very hot (+3), the satisfaction with shading was classified as good (A2 = 50%) and regular (A1 = 41.67%), thermal comfort (A1 = 28.76 °C; A2 = 27.70 ºC), ranges from uncomfortable to very uncomfortable. Therefore, there is a need to improve afforestation in the Marabá Pioneira Nucleus, in order to reduce the discomfort index and the quality of life of the population.

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The Street Air Warming Phenomenon in a High-Rise Compact City

Atmosphere ◽

10.3390/atmos9100402 ◽

2018 ◽

Vol 9 (10) ◽

pp. 402 ◽

Cited By ~ 4

Author(s):

Xiaoxue Wang ◽

Yuguo Li ◽

Xinyan Yang ◽

Pak Chan ◽

Janet Nichol ◽

...

Keyword(s):

Thermal Comfort ◽

Air Temperature ◽

Thermal Environment ◽

Urban Climate ◽

Pollutant Dispersion ◽

Urban Morphology ◽

Air Temperatures ◽

Significant Difference ◽

Sensitivity Studies ◽

Weather Stations

The street thermal environment is important for thermal comfort, urban climate and pollutant dispersion. A 24-h vehicle traverse study was conducted over the Kowloon Peninsula of Hong Kong in summer, with each measurement period consisting of 2–3 full days. The data covered a total of 158 loops in 198 h along the route on sunny days. The measured data were averaged by three methods (direct average, FFT filter and interpolated by the piecewise cubic Hermite interpolation). The average street air temperatures were found to be 1–3 °C higher than those recorded at nearby fixed weather stations. The street warming phenomenon observed in the study has substantial implications as usually urban heat island (UHI) intensity is estimated from measurement at fixed weather stations, and therefore the UHI intensity in the built areas of the city may have been underestimated. This significant difference is of interest for studies on outdoor air temperature, thermal comfort, urban environment and pollutant dispersion. The differences were simulated by an improved one-dimensional temperature model (ZERO-CAT) using different urban morphology parameters. The model can correct the underestimation of street air temperature. Further sensitivity studies show that the building arrangement in the daytime and nighttime plays different roles for air temperature in the street. City designers can choose different parameters based on their purpose.

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Human Thermal Comfort Situation in the Goller (Lakes) District of Turkey

New Trends and Issues Proceedings on Advances Pure and Applied Sciences ◽

10.18844/gjpaas.v0i7.3172 ◽

2016 ◽

pp. 137-144

Author(s):

Yuksel Guclu

Keyword(s):

Relative Humidity ◽

Thermal Comfort ◽

Human Health ◽

Air Temperature ◽

Mediterranean Region ◽

Human Thermal Comfort ◽

Almost All ◽

Relative Humidity Data ◽

Recreation Activities

Abstract In this study, the determination of the human thermal comfort situation in the Goller District (in the Mediterranean Region) of Turkey has been aimed. In the direction of the aim, the air temperature and relative humidity data of total 11 meteorology stations have been examined according to The Thermo-hygrometric Index (THI) and the New Summer Simmer Index (SSI). According to this, it has been determined that the thermal comfort conditions are not appropriate in the period of October-May on average monthly. The months of June and September are the most appropriate to almost all kinds of tourism and recreation activities in the outdoor in terms of thermal comfort. When THI and SSI indices’ values are evaluated together, the periods between 5th – 25th June and 29th August-16th September are the most appropriate periods in the study area on average in terms of the thermal comfort for the tourism and recreation activities in the outdoor. Keywords: Thermal comfort, human health, The Thermo-Hygrometric Index, The Summer Simmer Index, Goller District, Turkey.

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Empirical Model of Human Thermal Comfort in Subtropical Climates: A First Approach to the Brazilian Subtropical Index (BSI)

Atmosphere ◽

10.3390/atmos9100391 ◽

2018 ◽

Vol 9 (10) ◽

pp. 391 ◽

Cited By ~ 4

Author(s):

João Gobo ◽

Marlon Faria ◽

Emerson Galvani ◽

Fabio Goncalves ◽

Leonardo Monteiro

Keyword(s):

Thermal Comfort ◽

Empirical Model ◽

Thermal Sensation ◽

Meteorological Data ◽

Well Being ◽

Global Solar Radiation ◽

Coefficient Of Determination ◽

Subtropical Climate ◽

Human Thermal Comfort ◽

The City

The bioclimatic well-being of individuals is associated with the environmental characteristics of where they live. Knowing the relationships between local and regional climatic variables as well as the physical characteristics of a given region and their implications on thermal comfort is important for identifying aspects of thermal sensation in the population. The aim of this study is to develop an empirical model of human thermal comfort based on subjective and individual environmental patterns observed in the city of Santa Maria, located in the state of Rio Grande do Sul, Brazil (Subtropical climate). Meteorological data were collected by means of an automatic meteorological station installed in the city center, which contained sensors measuring global solar radiation, air temperature, globe temperature (via a grey globe thermometer), relative humidity and wind speed and direction. A total of 1720 people were also interviewed using a questionnaire adapted from the model recommended by ISO 10551. Linear regressions were performed to obtain the predictive model. The observed results proposed a new empirical model for subtropical climate, the Brazilian Subtropical Index (BSI), which was verified to be more than 79% accurate, with a coefficient of determination of 0.926 and an adjusted R2 value of 0.924.

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Experimental study on coupling effect of indoor air temperature and radiant temperature on human thermal comfort in non-uniform thermal environment

Building and Environment ◽

10.1016/j.buildenv.2019.106387 ◽

2019 ◽

Vol 165 ◽

pp. 106387 ◽

Cited By ~ 3

Author(s):

Dengjia Wang ◽

Guixia Chen ◽

Cong Song ◽

Yanfeng Liu ◽

Wenfang He ◽

...

Keyword(s):

Experimental Study ◽

Thermal Comfort ◽

Air Temperature ◽

Indoor Air ◽

Thermal Environment ◽

Coupling Effect ◽

Human Thermal Comfort ◽

Radiant Temperature

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Evaluating the Cooling Potential of Urban Green Spaces to Tackle Urban Climate Change in Lisbon

Sustainability ◽

10.3390/su11092480 ◽

2019 ◽

Vol 11 (9) ◽

pp. 2480 ◽

Cited By ~ 15

Author(s):

Cláudia Reis ◽

António Lopes

Keyword(s):

Climate Change ◽

Air Temperature ◽

Urban Climate ◽

Green Spaces ◽

Reference Station ◽

Future Climate Change ◽

Measuring Point ◽

Urban Green ◽

Urban Green Spaces ◽

Human Thermal Comfort

The increase and optimization of urban vegetation has been considered an effective mitigation measure of an urban heat island (UHI), with positive effects on human thermal comfort. In this study, the cooling potential of all green spaces in Lisbon was estimated. For that, several mobile measurements of air temperature data were made in a single park (Gulbenkian’s Garden). These measurements were used for the interpolation of air temperature. Furthermore, urban biomass was estimated using remote sensing products, namely Landsat satellite images. Ultimately, a linear regression model was built from the relation between vegetation density and air temperature. Results regarding the estimation of biomass (AGB) in the city of Lisbon were higher in winter than in summer. The urban green spaces cooling potential model showed that for every decrease of 1 °C in air temperature between a measuring point and a reference station we need to increase the area covered by vegetation by 50 m2 (planar measure). This methodology can be applied in other urban areas for the quantification of the cooling effect provided by vegetation in order to improve urban climate thermal conditions and human well-being and, consequently, to mitigate some consequences of future climate change.

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Experimental study on dynamic thermal environment of passenger compartment based on thermal evaluation indexes

Science Progress ◽

10.1177/0036850420942991 ◽

2020 ◽

Vol 103 (3) ◽

pp. 003685042094299

Author(s):

Liang Zhang ◽

Liangkui Qi ◽

Jianhua Liu ◽

Qingqing Wu

Keyword(s):

Thermal Comfort ◽

Air Temperature ◽

Prediction Accuracy ◽

Thermal Environment ◽

Temperature Model ◽

Equivalent Temperature ◽

Vote Model ◽

Evaluation Indexes ◽

Human Thermal Comfort ◽

Experimental Values

In this article, the thermal environment and the human thermal comfort of car cabin under different driving states in summer were studied experimentally. The weighted predictive mean vote model and the weighted equivalent temperature model were used for calculation and compared with the experimental values. The experimental results show that the air temperature and relative humidity distribution in cabin are affected by the space position and driving state. The temperature of the cabin seat, which is affected by solar radiation and crew, in the heating stage is slightly higher than the air temperature, while the cooling rate in the cooling stage is much lower than the air temperature. The predictive mean vote model and the equivalent temperature model are basically consistent with the actual thermal comfort of human body under the idle and driving conditions with the change of time. The prediction accuracy of the two models under the idle condition is higher than that under the driving condition, and the overall prediction accuracy of the equivalent temperature model is higher than that of the predictive mean vote model.

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Investigation on Airport Landscape Cooling Associated with Irrigation: A Case Study of Adelaide Airport, Australia

Sustainability ◽

10.3390/su12198123 ◽

2020 ◽

Vol 12 (19) ◽

pp. 8123

Author(s):

Jingming Qian ◽

Shujiang Miao ◽

Nigel Tapper ◽

Jianguang Xie ◽

Greg Ingleton

Keyword(s):

Global Warming ◽

Thermal Comfort ◽

Air Temperature ◽

Trial Period ◽

Land Utilization ◽

Irrigation Area ◽

Human Thermal Comfort ◽

Loading And Unloading ◽

Maximum Air Temperature

Extreme summertime heat is becoming a major issue for aircraft operations. As global temperatures continue to rise, some of the heaviest planes on the longest flights may eventually be unable to depart during the hottest part of summer days. During summer days, some airports have to reduce the payload of aircraft, including cargo and/or passengers in the hotter days of summer. Nonetheless, there is no existing body of research on the potential for airport cooling. Furthermore, extreme heat on the ground also affects airport workers; loading and unloading luggage and servicing platforms between flights could become more arduous. With global warming proceeding, it is becoming increasingly urgent to find a suitable strategy to cool airport environments, perhaps by irrigation of a vegetated landscape. All airports have large enclosed areas (usually of grass) acting as a buffer between airport activities and the adjacent industrial, commercial and residential land utilization. This paper describes the trial of irrigating the buffer area of Adelaide airport and analyzes the performance of irrigation cooling for Adelaide airport, examining whether this can benefit human thermal comfort. Results indicate that irrigation provides cooling, and the cooling effect reduces along with the increasing instance from the middle of the irrigation area. At 15:00, the average air temperature was 1.8 °C cooler in the middle of the irrigation area than in the non-irrigation area, and the relative humidity was 5.8% higher during the trial period. On an extremely hot day (the maximum air temperature was 45.4 °C), it was 1.5 °C cooler in the middle of the irrigation area than upwind the of irrigation area, and 0.8 °C cooler than downwind of the irrigation area at 13:00. Human thermal comfort (HTC) is unfavorable in the runway, but greater improvements can be made through promotion of irrigation.

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15 year re-analysis of the urban climate of Amsterdam using WRF

10.5194/egusphere-egu2020-11560 ◽

2020 ◽

Author(s):

Sytse Koopmans ◽

Gert-Jan Steeneveld ◽

Ronald van Haren ◽

Albert Holtslag

Keyword(s):

Data Assimilation ◽

The Netherlands ◽

Thermal Comfort ◽

Prediction Models ◽

Weather Prediction ◽

Urban Climate ◽

Urban Canopy ◽

Human Thermal Comfort ◽

Weather Observations ◽

Simulated Precipitation

15 year re-analysis of the urban climate of Amsterdam using WRF &#160;Sytse Koopmans1 ([email protected]), Gert-Jan Steeneveld1, Ronald van Haren2, Albert A.M. Holtslag1.&#160;1 Wageningen University and Research, the Netherlands:2 Netherlands eScience Center, the Netherlands:&#160;&#160;Ongoing world-wide climate change and urbanization illustrate the need to understand urban hydrometeorology and its implications for human thermal comfort and water management. Numerical weather prediction models can assist to understand these issues, as they progress increasingly towards finer scales. With high model resolutions (grid spacing of 100m), effective representation of cities becomes crucial. The complex structures of cities, configuration of buildings, streets and scattered vegetation, require a different modelling approach than the homogeneous rural surroundings. The current urban canopy-layer schemes account for these city specific characteristics, but differ substantially amongst each other due to uncertainty in land use parameters and incomplete physical understanding. Therefore, the hindcasting of the urban environment needs improvement.In this study, we improve the WRF (Weather Research and Forecasting) mesoscale model performance by incorporating observations of a variety of sources using data assimilation (WRF-3DVAR) and nudging techniques on a resolution up to 167 meter. Data assimilation aims to accurately describe the most probable atmospheric state by steering the model fields in the direction of the observations. Specific to urban boundary layers, a novel approach has been developed to nudge modelled urban canyon temperatures with quality controlled urban weather observations. Adjusting the urban fabric accordingly is crucial, because of the large heat storage within urban canopies. The road and wall layers of the urban canopy are adjusted depending on the bulk heat transfer coefficient and urban geometry. Other data assimilation sources consists of WMO synoptic weather observations and volume radar data.The results of the 15-year climatological urban re-analysis are here presented and it is subdivided in three key questions. First, we attempt to answer how large the trends are in human thermal comfort over the 15 year period. Second, we investigate if there are seasonality&#8217;s detected in maximum urban heat island intensities. Earlier found hysteresis-like curves were reproduced to a large extent for for pedestrian level air temperatures. Lastly, we analyse trends in extreme precipitation using simulated precipitation data on one second interval.

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