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Title: A global record of annual urban dynamics (1992–2013) from nighttime lights

Abstract

The nighttime light (NTL) observations from Defense Meteorological Satellite Program/Operational Linescane System (DMSP/OLS) offer great potentials to study urban dynamics from regional to global scales for over two decades. In this paper, we presented a new approach to develop spatially and temporally consistent global urban maps from 1992 to 2013, using the DMSP/OLS NTL observations. First, potential urban clusters were delineated from the NTL data using a segmentation method. Then, a quantile based approach was proposed to remove rural and suburban areas sequentially in the potential urban cluster. Finally, the derived urban series (1992-2013) was improved for temporal consistency. This study found that the percentage of global urban areas to the world’s surface increased from 0.23% in 1992 to 0.53% in 2013. Meanwhile, Asia is the continent with the most significant urban growth over the world. The time series of global urban maps were evaluated for the spatial agreement and temporal consistency using a variety of widely used land cover products. The evaluation indicates that our approach is robust and performs well in deriving global urban dynamics across different spatial scales, i.e., cluster, province (or state), and countries. Moreover, different from many other studies, this quantile based approach is advantageousmore » because it does not require additional data for enhancement or calibration. The new time series of urban maps from this study offer a new dataset for studying global urbanization in the past two decades.« less

Authors:
ORCiD logo; ORCiD logo; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1490710
Report Number(s):
PNNL-SA-129683
Journal ID: ISSN 0034-4257
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Remote Sensing of Environment
Additional Journal Information:
Journal Volume: 219; Journal Issue: C; Journal ID: ISSN 0034-4257
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
Nighttime lights, Segmentation, Urban cluster, threshold, Quantile based approach, Global urban dynamics

Citation Formats

Zhou, Yuyu, Li, Xuecao, Asrar, Ghassem R., Smith, Steven J., and Imhoff, Marc. A global record of annual urban dynamics (1992–2013) from nighttime lights. United States: N. p., 2018. Web. doi:10.1016/j.rse.2018.10.015.
Zhou, Yuyu, Li, Xuecao, Asrar, Ghassem R., Smith, Steven J., & Imhoff, Marc. A global record of annual urban dynamics (1992–2013) from nighttime lights. United States. doi:10.1016/j.rse.2018.10.015.
Zhou, Yuyu, Li, Xuecao, Asrar, Ghassem R., Smith, Steven J., and Imhoff, Marc. Sat . "A global record of annual urban dynamics (1992–2013) from nighttime lights". United States. doi:10.1016/j.rse.2018.10.015.
@article{osti_1490710,
title = {A global record of annual urban dynamics (1992–2013) from nighttime lights},
author = {Zhou, Yuyu and Li, Xuecao and Asrar, Ghassem R. and Smith, Steven J. and Imhoff, Marc},
abstractNote = {The nighttime light (NTL) observations from Defense Meteorological Satellite Program/Operational Linescane System (DMSP/OLS) offer great potentials to study urban dynamics from regional to global scales for over two decades. In this paper, we presented a new approach to develop spatially and temporally consistent global urban maps from 1992 to 2013, using the DMSP/OLS NTL observations. First, potential urban clusters were delineated from the NTL data using a segmentation method. Then, a quantile based approach was proposed to remove rural and suburban areas sequentially in the potential urban cluster. Finally, the derived urban series (1992-2013) was improved for temporal consistency. This study found that the percentage of global urban areas to the world’s surface increased from 0.23% in 1992 to 0.53% in 2013. Meanwhile, Asia is the continent with the most significant urban growth over the world. The time series of global urban maps were evaluated for the spatial agreement and temporal consistency using a variety of widely used land cover products. The evaluation indicates that our approach is robust and performs well in deriving global urban dynamics across different spatial scales, i.e., cluster, province (or state), and countries. Moreover, different from many other studies, this quantile based approach is advantageous because it does not require additional data for enhancement or calibration. The new time series of urban maps from this study offer a new dataset for studying global urbanization in the past two decades.},
doi = {10.1016/j.rse.2018.10.015},
journal = {Remote Sensing of Environment},
issn = {0034-4257},
number = C,
volume = 219,
place = {United States},
year = {2018},
month = {12}
}