Application of Airborne Hype Rspectral and Thermal Images to Analyse Urban Microclimate

Jung, András

doi:10.15666/aeer/0501_165175

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…There is a very interesting possibility to increase the spatial resolution of these images (Jung et al, 2007). Its base is the fact that the NDVI indices highly correlate with the temperature values in some certain regions.…”

Section: Methodsmentioning

confidence: 99%

The Possibilities of Decreasing the Urban Heat Island

Oláh¹

2012

Appl Ecol Env Res

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Abstract. The urban heat island phenomenon is one of the greatest challenges of the present days regarding the sustainability of our cities and settlements. A great amount of research has already been completed considering the urban heat island, with a significant part of them based on the utilization of remote sensing. The results show that in the case of the densely built-up areas of Hungary the maximal intensity of the urban heat island can be experienced in the industrial areas and in the extremely densely built-up zones, while water bodies and surfaces covered by vegetation proved to be the coolest zones under all circumstances. Thus, according to the results only water and green surfaces are capable of effectively reducing the urban heat island. Firstly, urban green surfaces and water bodies must be created to become capable of decreasing the urban heat island to the maximal extent. Secondly, it is possible to maximize the rate of green and water coverage within settlements only with the tools of urban planning. Thus it is essential in the case of urban planning to implement the existing regulation tools to prevent or minimize the further intensifying of the urban heat island.

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Section: Methodsmentioning

confidence: 99%

The Possibilities of Decreasing the Urban Heat Island

Oláh¹

2012

Appl Ecol Env Res

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“…While the authors demonstrated the potential to drive temperature‐emissivity separation algorithms using hyperspectral imagery; they also suggested that the results would have been more accurate if done at pixel sizes coarser than the ≈5 m typically associated with airborne hyperspectral data. In another project using airborne hyperspectral data, Jung et al. (2005, 2007) were able to quantify the oasis effect of green space on the summer heat island of Gyöngyös, Hungary.…”

Section: Selected Applicationsmentioning

confidence: 99%

Hyperspectral Remote Sensing of Urban Areas

Hardin¹,

Hardin

2013

Geography Compass

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The use of airborne hyperspectral sensors for urban analysis represents a significant advance in remote sensing. The greatest challenges to effectively using urban hyperspectral imagery include (i) managing the natural spectral complexity of urban fabrics, (ii) selecting optimal feature sets from an enormous number of candidate features, (iii) designing classifiers that are minimally affected by the curse of dimensionality, and (iv) reducing the computational burden of hyperspectral algorithms on large images. To address these challenges, there have been several promising methodological advances in urban hyperspectral analysis. Examples include multiclassifier systems, decision fusion processes, support vector machine algorithms, object oriented approaches to classification, and discrimination via morphological profiles. Unfortunately, few of these advances are leveraged in commercial software packages, thus limiting their practical utility to the practitioner.

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“…In addition to the location and orientation of the different urban objects, urban surface materials have significant influence on the urban micro climate [93]. Among others, Xu et al and Jung et al [63,94] focus on urban micro climate, by combining thermal airborne remote sensing data with hyperspectral data for land cover mapping. Heldens et al [95] used a detailed surface material map derived from airborne hyperspectral data as input for a micro climate model with which information on temperature, humidity, wind speed, etc.…”

Section: Urban Climatementioning

confidence: 99%

Can the Future EnMAP Mission Contribute to Urban Applications? A Literature Survey

et al. 2011

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With urban populations and their footprints growing globally, the need to assess the dynamics of the urban environment increases. Remote sensing is one approach that can analyze these developments quantitatively with respect to spatially and temporally large scale changes. With the 2015 launch of the spaceborne EnMAP mission, a new hyperspectral sensor with high signal-to-noise ratio at medium spatial resolution, and a 21 day global revisit capability will become available. This paper presents the results of a literature survey on existing applications and image analysis techniques in the context of urban remote sensing in order to identify and outline potential contributions of the future EnMAP mission. Regarding urban applications, four frequently addressed topics have been identified: urban development and planning, urban growth assessment, risk and vulnerability assessment and urban climate. The requirements of four application fields and associated image processing techniques used to retrieve desired parameters and create geo-information products have been reviewed. As a result, we identified promising research directions enabling the use of EnMAP for urban studies. First and foremost, research is required to analyze the spectral information content of an EnMAP pixel used to support material-based land cover mapping approaches. This information can subsequently be used to improve urban indicators, such as imperviousness. Second, we identified the global monitoring of urban areas as a promising field of investigation taking advantage of EnMAP's spatial coverage and revisit capability.Remote Sens. 2011, 3 1818However, owing to the limitations of EnMAPs spatial resolution for urban applications, research should also focus on hyperspectral resolution enhancement to enable retrieving material information on sub-pixel level.

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Application of Airborne Hype Rspectral and Thermal Images to Analyse Urban Microclimate

Abstract: Jung-Tőkei-Kardeván: Application of airborne hyperspectral and thermal images to analyse urban microclimate APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH 5(

Cited by 5 publications

References 12 publications

The Possibilities of Decreasing the Urban Heat Island

The Possibilities of Decreasing the Urban Heat Island

Hyperspectral Remote Sensing of Urban Areas

Can the Future EnMAP Mission Contribute to Urban Applications? A Literature Survey

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