ANÁLISE DA TEMPERATURA DE SUPERFÍCIE E A RELAÇÃO COM O NDVI DA ZONA URBANA DO MUNICÍPIO DO CRATO/CEARÁ 2017

2019 ◽  
Vol 21 (2) ◽  
pp. 334-347
Author(s):  
Mayra Alves Pinheiro ◽  
Juliana Maria Oliveira Silva
Keyword(s):  
Surface Temperature ◽  
Vegetation Index ◽  
Plant Density ◽  
Vegetation Indexes ◽  
Higher Temperature ◽  
Lower Temperature ◽  
The Relationship ◽  
The City ◽  
Surface Temperature Variation ◽  
Chapada Do Araripe

O objetivo do trabalho é analisar a relação existente entre os dados de temperatura de superfície com o índice de vegetação (NDVI) na zona urbana do Município do Crato para o mês de agosto de 2017. A distribuição da temperatura de superfície na cidade do Crato apresentou uma variação entre 22.1°C a 35.4°C. Os bairros com maiores valores de temperatura entre 32.4°C e 35.8°C, configuram-se em locais com baixa densidade vegetal, referente aos bairros do Centro, Vila Alta, Seminário, Barro Branco, Mirandão e Santa Luzia, diferente da área com menores temperaturas, entre 22.1°C a 25°C. Os valores de NDVI apresentam uma relação com a temperatura, quanto menor o índice de vegetação, maior será a temperatura. Com isso, os bairros que apresentaram menores índice de vegetação (entre 0.03 a 0.24) foram o Centro, Vila Alta, Seminário e Santa Luzia. Os bairros que tem os maiores índices de vegetação (calculado entre 0.64 a 0.85) estão os bairros mais próximos a encosta da Chapada do Araripe, como o Granjeiro, Coqueiro, Lameiro e São Gonçalo. Com relação aos resultados encontrados nos mapas de Temperatura e NDVI, pode-se dizer que área centrais da cidade do Crato apresentaram maiores valores de temperatura de superfície e menores índices de vegetação.Palavras-chave: sensoriamento remoto; NDVI e temperatura de superfície.  ABSTRACTThe objective of this work is to analyze the relationship between the surface temperature data and the NDVI vegetation index of the urban area of the Municipality of Crato / Ceará for the month of August 2017. The surface temperature distribution in the city of Crato, has a surface temperature variation between 22.1 ° C and 35.4 ° C. The neighborhoods with thighs surface temperature values between 32.4 ° C and 35.8 ° C, are located in places with low plant density, referring to the neighborhoods of Vila Alta, Seminary, Barro Branco, Mirandão and Santa Luzia, different from the area with lower temperature, between 22.1 ° C to 25 ° C. The NDVI values influence the temperature increase, the lower the vegetation index, the higher the temperature. Thus, the neighborhoods with the lowest vegetation index were between 0.03 and 0.24 were the Center, Vila Alta, Pimenta and Santa Luzia. The neighborhoods that have the highest vegetation indexes (calculated from 0.64 to 0.85) are the neighborhoods closest to the hillside of Chapada do Araripe, such as Granjeiro, Coqueiro, Lameiro and São Gonçalo. With respect to the results found in the maps of Temperature and NDVI, it can be said that the most central areas of the city of Crato presented higher temperature values.Keywords: remote sensing, NDVI and surface temperature.RESUMENEl objetivo de este trabajo es analizar la relación entre los datos de temperatura de la superficie y el índice de vegetación NDVI del área urbana del Municipio de Crato / Ceará para el mes de agosto de 2017. La distribución de la temperatura de la superficie en la ciudad de Crato, tiene un variación de la temperatura de la superficie entre 22.1 ° C y 35.4 ° C. Los barrios con valores de temperatura de la superficie de los muslos entre 32.4 ° C y 35.8 ° C, se encuentran en lugares con baja densidad de plantas, en referencia a los barrios de Vila Alta, Seminario, Barro Branco, Mirandão y Santa Luzia, diferentes del área con temperatura más baja, entre 22.1 ° C a 25 ° C. Los valores de NDVI influyen en el aumento de la temperatura, cuanto menor es el índice de vegetación, mayor es la temperatura. Así, los barrios con el índice de vegetación más bajo estuvieron entre 0.03 y 0.24 fueron el Centro, Vila Alta, Pimenta y Santa Luzia. Los barrios que tienen los índices de vegetación más altos (calculados de 0,64 a 0,85) son los más cercanos a la ladera de Chapada do Araripe, como Granjeiro, Coqueiro, Lameiro y São Gonçalo. Con respecto a los resultados encontrados en los mapas de Temperatura y NDVI, se puede decir que las áreas más céntricas de la ciudad de Crato presentaron valores de temperatura más altos.Palabras clave: teledetección, NDVI y temperatura superficial.

scholarly journals Seasonal Variations of Daytime Land Surface Temperature and Their Underlying Drivers over Wuhan, China

2021 ◽  
Vol 13 (2) ◽  
pp. 323
Author(s):  
Liang Chen ◽  
Xuelei Wang ◽  
Xiaobin Cai ◽  
Chao Yang ◽  
Xiaorong Lu
Keyword(s):  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Maximum Temperature ◽  
Maximum Temperature Difference ◽  
Rapid Urbanization ◽  
The Impact ◽  
The City

Rapid urbanization greatly alters land surface vegetation cover and heat distribution, leading to the development of the urban heat island (UHI) effect and seriously affecting the healthy development of cities and the comfort of living. As an indicator of urban health and livability, monitoring the distribution of land surface temperature (LST) and discovering its main impacting factors are receiving increasing attention in the effort to develop cities more sustainably. In this study, we analyzed the spatial distribution patterns of LST of the city of Wuhan, China, from 2013 to 2019. We detected hot and cold poles in four seasons through clustering and outlier analysis (based on Anselin local Moran’s I) of LST. Furthermore, we introduced the geographical detector model to quantify the impact of six physical and socio-economic factors, including the digital elevation model (DEM), index-based built-up index (IBI), modified normalized difference water index (MNDWI), normalized difference vegetation index (NDVI), population, and Gross Domestic Product (GDP) on the LST distribution of Wuhan. Finally, to identify the influence of land cover on temperature, the LST of croplands, woodlands, grasslands, and built-up areas was analyzed. The results showed that low temperatures are mainly distributed over water and woodland areas, followed by grasslands; high temperatures are mainly concentrated over built-up areas. The maximum temperature difference between land covers occurs in spring and summer, while this difference can be ignored in winter. MNDWI, IBI, and NDVI are the key driving factors of the thermal values change in Wuhan, especially of their interaction. We found that the temperature of water area and urban green space (woodlands and grasslands) tends to be 5.4 °C and 2.6 °C lower than that of built-up areas. Our research results can contribute to the urban planning and urban greening of Wuhan and promote the healthy and sustainable development of the city.

Effect of Aging Treatment on Damping Capacity in Mncunife Alloy

2012 ◽  
Vol 246-247 ◽  
pp. 1158-1162
Author(s):  
Xu Fu ◽  
Ning Li ◽  
Yu Hua Wen ◽  
Jing Teng ◽  
Ying Zhang
Keyword(s):  
Electron Microscope ◽  
Aging Treatment ◽  
Damping Capacity ◽  
Torsion Pendulum ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Higher Temperature ◽  
Lower Temperature ◽  
The Relationship

M2052 alloys with various aging treatments are obtained in order to investigate the relationship between aging treatment and damping capacity by the torsion pendulum, X-Ray Diffraction (XRD) and Transmission Electron Microscope (TEM) methods. The results show that M2052 can obtain high damping capacity (δ>0.2) when aged at a range from 400°C to 450°C, and the damping capacity after aged at a lower temperature is higher than that aged at a higher temperature for the maximum values. TEM and XRD results show that fcc-fct transformation occurs after aging treatment. The volumes of fct structures are one of reason to affect the damping capacity in M2052 alloy. The better understanding aging treatment could promote the applications of M2052 alloy.

scholarly journals Reproductive seasonality and environmental effects in green turtle (Chelonia mydas) nesting at Penang Island, Malaysia

2020 ◽  
Vol 100 (4) ◽  
pp. 645-650
Author(s):  
Sarahaizad Mohd Salleh ◽  
Hideaki Nishizawa ◽  
Shahrul Anuar Mohd Sah ◽  
Ahmed Jalal Khan Chowdhury
Keyword(s):  
Green Turtle ◽  
Annual Variation ◽  
Temporal Distribution ◽  
Chelonia Mydas ◽  
Monthly Basis ◽  
Fundamental Information ◽  
Higher Temperature ◽  
Lower Temperature ◽  
Response To Environmental Change ◽  
The Relationship

AbstractFor species with environmental sex determination, understanding the relationship between reproduction and environmental factors is important for predicting their reproductive output. Here, we study intra-annual variation in green turtle nesting during the 2010–2016 seasons at Penang Island (5°16′28″–5°28′15″N 100°10′52″–100°11′55″E), Malaysia. The additive modelling on a monthly-basis number of nests shows that fluctuation in the number of nests relates to temperature in addition to month of year, rather than precipitation. The number of nests tended to be higher in response to higher temperature during March–July, whereas the lower temperature during August–February also tended to result in a relatively higher number of nests. Concentration of nests during March–July resulted from a shorter inter-nesting interval during warm temperatures, whereas relatively low temperatures may homogenize the temporal distribution of the number of nests. This study provides fundamental information for green turtle nesting seasonality in response to environmental change.

scholarly journals ANÁLISE DA GESTÃO OCUPACIONAL EM MONTES CLAROS – MG: Impactos do uso do solo e suas consequências na temperatura de superfície

2020 ◽  
Vol 15 (01) ◽  
pp. 285-311
Author(s):  
Bruna Reis Pereira ◽  
Mariana Barreto Mees ◽  
Manoel Reinaldo Leite ◽  
Raul de Magalhães Filho
Keyword(s):  
Surface Temperature ◽  
Urban Space ◽  
Temperature Increase ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Urban Centers ◽  
Human Needs ◽  
Significant Temperature ◽  
Landsat 5 Tm ◽  
The City

O uso do solo é a atividade de uma sociedade por sobre uma superfície, este caracteriza-se conforme as individualidades conjugada aos padrões de necessidades humanas. Um dos impactos ambientais que deve ser considerado neste processo de apropriação é o comportamento térmico de superfície. Neste sentido, o presente trabalho, tendo como área de estudo o perímetro urbano de Montes Claros – MG, teve como objetivo analisar a ocupação do espaço urbano na cidade sob uma condição cronológica: 1990 a 2010. Por meio da análise de imagens de sensoriamento remoto (Landsat 5 TM) procurou-se verificar se o modelo de ocupação provocou problemas urbanos de natureza térmica. Os resultados mostraram, a partir da metodologia adotada, que regiões com decréscimo de NDVI (Índice de Vegetação por Diferença Normalizada) e grande adensamento de edificações tiveram significativos aumento de temperatura no período considerado, ratificando o problema de aumento de temperatura de superfície nos centros urbanos. Palavras-chave: Urbanização; temperatura de superfície; desenvolvimento urbano; Montes Claros.   ANALYSIS OF OCCUPATIONAL MANAGEMENT IN MONTES CLAROS - MG: Impacts of land use and its consequences on surface temperature Abstract The use of the soil is the activity of a society above a surface, this is characterized according to the individualities combined with the patterns of human needs. One of the environmental impacts that must be considered in this appropriation process is the surface thermal behavior. In this sense, the present study, having as its study area the urban perimeter of Montes Claros - MG, aimed to analyze the occupation of urban space in the city under a chronological condition: 1990 to 2010. Through the analysis of remote sensing images (Landsat 5 TM), it was verified that the occupation model caused urban problems of a thermal nature. The results showed that the regions with decreasing NDVI (Normalized Difference Vegetation Index) and high density of buildings had significant temperature increase in the period considered, confirming the problem of surface temperature increase in urban centers . Keywords: Urbanization; Surface temperature; urban Development; Montes Claros.   ANALYSE DES PROFESSIONNELLES GESTION MONTES CLAROS - MG: impacts de l'utilisation des terres et les conséquences de la température de surface Resumen Uso de la tierra es la actividad de una corporación sobre una superficie, este se caracteriza como individualidades combinados a los estándares de las necesidades humanas. Un impactos ambientales que deben ser considerados en este proceso de solución es la superficie comportamiento térmico. En este sentido, el presente trabajo, con el área de estudio del área urbana de Montes Claros - MG, tuvo como objetivo analizar la ocupación del espacio urbano en la ciudad bajo una condición cronológico: 1990 a 2010. Por medio del análisis de imágenes de teledetección (Landsat 5 TM) trató de verificar que el modelo de ocupación provocó problemas urbanos de la naturaleza térmica. Los resultados mostraron que a partir de la metodología utilizada, las regiones con la disminución de NDVI (índice de vegetación de diferencia normalizada) y de alta densidad de edificios tenían aumento significativo de la temperatura durante el periodo considerado, lo que confirma el problema aumento de la temperatura de superficie en los centros urbanos . Palavras chave: urbanización; temperatura de la superficie; desarrollo Urbano; Montes Claros.

scholarly journals ASSESSMENT OF RELATIONSHIP BETWEEN LAND SURFACE TEMPERATURE AND NORMALIZED DIFFERENT VEGETATION INDEX USING LANDSAT IMAGES IN SOME REGIONS OF DIYALA GOVERNORATE

2021 ◽  
Vol 52 (4) ◽  
pp. 793-801
Author(s):  
Al-Jbouri & Al-Timimi
Keyword(s):  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Climatic Conditions ◽  
Landsat 8 ◽  
Landsat Images ◽  
Remote Sensing Techniques ◽  
The Relationship

Agriculture is the most important and most dependent economic activity and influenced by climatic conditions as the climate elements represented by solar radiation, temperature, wind and relative humidity. Therefore, is necessary that analyze and understand the relationship between climate and agriculture. The aim of this study to assessment the relationship between land surface temperature (LST) and normalized difference vegetation index (NDVI) for three regions of Diyala Governorate in Iraq (Al Muqdadya, Baladrooz, and Baquba) by through using of remote sensing techniques and geographic information system (GIS).The Normalized difference vegetation index NDVI and land surface temperature (LST) were used in two of the Landsat-5 ETM + and Landsat-8 OLI satellite imagery during the years 1999 and 2019.  The results showed that increased in NDVI and decreased in LST for 2019, while for 1999 increased in LST and decreased in NDVI for the three regions. Finally, the regression was used to obtain that correlation between LST and NDVI. It was concluded that the correlation coefficient between NDVI and LST is negative, where the strongest correlation was 0.76 for Baquba and weakest correlation was 0.55 for Muqdadyia.

Evaluation of CO2 Absorbent/De-Absorbent by AAO/CaO Membrane

2013 ◽  
Vol 690-693 ◽  
pp. 1856-1859
Author(s):  
Chien Chon Chen ◽  
Yen Po Wang
Keyword(s):  
Anodic Aluminum Oxide ◽  
Sol Gel ◽  
Core Shell ◽  
Anodic Aluminum ◽  
Temperature Ranges ◽  
Higher Temperature ◽  
Co2 Absorbent ◽  
Lower Temperature ◽  
The Relationship ◽  
Fuel Material

This paper discussed the fabrication of anodic aluminum oxide (AAO)/CaO core-shell membrane by anodization and sol-gel processes and evaluated the relationship between the Al2O3/CaO and CO2 by thermodynamic calculation. According to thermodynamic property that CaO can reacts with CO2 forming calcium carbonate (CaCO3) in a lower temperature ranges, CaCO3 can also be decomposed to CaO in a higher temperature ranges. Because the reversible reaction property that CaO can be a CO2 absorbent/ de-absorbent. We address that AAO based on core-shell nanotubes structure to achieve such a demand. The captured CO2 can further convert to fuel material of hydrocarbons.

scholarly journals LAND SURFACE TEMPERATURE PROFILING AND ITS RELATIONSHIPS WITH LAND INDICES: A CASE STUDY ON LUCKNOW CITY

2019 ◽  
Vol IV-5/W2 ◽  
pp. 89-96
Author(s):  
M. O. Sarif ◽  
R. D. Gupta
Keyword(s):  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Vegetation Index ◽  
Spatial Dynamics ◽  
City Centre ◽  
Vegetation Growth ◽  
Natural Land ◽  
The City ◽  
Normal Difference

Abstract. Globally, 54.5% of the total population was living in urban settings in 2016 and a projection indicates that if the same trend goes, then this population will be 60% in 2030. Natural land has been converted to impervious space rapidly which is altering the climate change. The main focus of the present paper is the study of Land Surface Temperature (LST) dynamics and its relationship with Land Indices, viz., Normal Difference Vegetation Index (NDVI) which is found negative, Normal Difference Built-up Index (NDBI) which is found positive, Enhanced Built-up and Bareness Index (EBBI) which is found positive in Lucknow city on both time points of 1993 and 2019. This study also includes the effects of land indices on LST profiling in nine different parts and eight different directions to explore the spatial dynamics of city landscape. The NDVI is found higher in the southern side than any other parts of the city in 2019 because of high vegetation growth which resulted in reduction of LST by 4.42 °C to 5.76 °C as compared to parts of the city. The results of NDBI and EBBI exhibit high built-up growth in the landscape of the Lucknow city especially from city center to 13 kms (least growth in south-eastern side) from 1993 to 2019. The results indicate intensification of LST in the range of 0.26 °C to 2.24 °C between city centre and city periphery from 1993 to 2019. The findings of the present study will help urban planners and policy makers to adopt suitable measures for sustainable planning for Lucknow city landscape to reduce the adverse effects of LST.

scholarly journals SPATIAL-TEMPORAL PATTERN OF VEGETATION INDEX CHANGE AND THE RELATIONSHIP TO LAND SURFACE TEMPERATURE IN ZOIGE

2016 ◽  
Vol XLI-B3 ◽  
pp. 849-852 ◽  
Author(s):  
Z. Chen ◽  
W. G. Jiang ◽  
Z. H. Tang ◽  
K. Jia
Keyword(s):  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Vegetation Index ◽  
Wetland Degradation ◽  
Surface Temperature Change ◽  
Zoigê Plateau ◽  
Zoige Wetland ◽  
The Relationship ◽  
Zoige Plateau

The Zoige wetland is the largest alpine peat wetland in China, and it has been degrading since 1960s. MODIS Enhance Vegetation Index (EVI) and Land Surface Temperature (LST) products in late august from 2000 to 2014 were employed to explore vegetation index and land surface temperature change tendency and to perform Temperature Vegetation Dryness Index (TVDI). The correlation between the annual mean of EVI and annual mean of LST was also calculated at pixel scale. The main purpose of this study is to explore the relationship between wetland degradation and climate change. The main conclusions are as follows: (1) Average EVI in Zoige plateau tended to be decreasing from 2000 to 2014, especially after 2007. In wetland areas, the annual mean of EVI were negative, while the slope were positive. It showed that the water storage of wetlands in Zoige plateau had been decreasing in the past 15 years and will keep decreasing in the future. (2) Overall, LST in the whole Zoige plateau had been increasing since 2000. While the minimum TVDI increased from 2000 to 2008 and then decreased. The change of TVDI suggested that drought should be a main factor that lead to wetland degradation in Zoige. (3) The uneven distribution of the correlation between EVI and LST suggested that LST is also one of the main reasons of wetland degradation.

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