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Urban surface material composition from spaceborne imaging spectroscopy data

Jilge, Marianne and Feilhauer, Hannes and Ji, Chaonan and Neumann, Carsten and Heiden, Uta (2019) Urban surface material composition from spaceborne imaging spectroscopy data. Workshop on International Cooperation in Spaceborne Imaging Spectroscopy, 9.-11. July 2019, ESA-ESRIN, Frascati, Italy.

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The material composition of urban areas is important for urban climate modeling and urban canopy models. Since 2018, a few spaceborne imaging spectrometers have been launched such as the DESIS instrument on the ISS and the Italian PRISMA. The spatial resolution of these systems is around 30 m, which is in many cases not sufficient for urban applications. However, the spectral resolution ranges between few nanometers and thus, offers the potential to detect surface materials on a sub-pixel level. Common approaches for sub-pixel analyses such as spectral mixture analyses (SMA) mostly fail given the high spatial and spectral complexity of urban areas. A possible new way to interpret complex spectral mixtures in urban areas is to use the gradient concept, which so far has been applied to map species compositions in natural ecosystems. This study analyses whether the gradient concept offers a feasible solution for the analysis of urban data sets with a high amount of spectral mixtures. The presented strategy presumes that the composition of material mixtures changes gradually across urban spaces. This study focuses on 1) the adaptation of gradient analysis from vegetation ecology, 2) the mapping of these material gradients using simulated EnMAP data of Munich, Germany, to identify characteristic material compositions and 3) an initial test to transfer the gained results to areas without knowledge about material compositions. The achieved insights of this study build an important fundament for future analyses focusing on the transferability of the gradient concept to unknown urban areas.

Item URL in elib:https://elib.dlr.de/129179/
Document Type:Conference or Workshop Item (Speech)
Title:Urban surface material composition from spaceborne imaging spectroscopy data
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jilge, MarianneMarianne.Jilge (at) dlr.deUNSPECIFIED
Feilhauer, Hanneshannes.feilhauer (at) fu-berlin.dehttps://orcid.org/0000-0001-5758-6303
Ji, Chaonanji.chaonan (at) dlr.deUNSPECIFIED
Neumann, Carstencarsten.neumann (at) gfz-potsdam.deUNSPECIFIED
Heiden, Utauta.heiden (at) dlr.dehttps://orcid.org/0000-0002-3865-1912
Date:9 July 2019
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:EnMAP, imaging spectroscopy, urban, gradient analysis
Event Title:Workshop on International Cooperation in Spaceborne Imaging Spectroscopy
Event Location:ESA-ESRIN, Frascati, Italy
Event Type:Workshop
Event Dates:9.-11. July 2019
Organizer:ESA ESRIN
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Remote sensing and geoscience
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Land Surface Dynamics
Deposited By: Heiden, Dr.rer.nat. Uta
Deposited On:18 Sep 2019 11:28
Last Modified:18 Sep 2019 11:28

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