| Records |
| Author |
Levin, N.; Johansen, K.; Hacker, J.M.; Phinn, S. |
| Title |
A new source for high spatial resolution night time images -- The EROS-B commercial satellite |
Type |
Journal Article |
| Year |
2014 |
Publication |
Remote Sensing of Environment |
Abbreviated Journal |
Remote Sensing of Environment |
| Volume |
149 |
Issue |
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Pages |
1-12 |
| Keywords |
Night lights; EROS-B; Land cover; Land use; Fine spatial resolution; remote sensing; satellite; light at night |
| Abstract |
City lights present one of humankind's most unique footprints on Earth as seen from space. Resulting light pollution from artificial lights obscures the night sky for astronomy and has negative impacts on biodiversity as well as on human health. However, remote sensing studies of night lights to date have been mostly limited to coarse spatial resolution sensors such as the DMSP-OLS. Here we present a new source for high spatial resolution mapping of night lights from space, derived from a commercial satellite. We tasked the Israeli EROS-B satellite to acquire two night-time light images (at a spatial resolution of 1 m) of Brisbane, Australia, and analyzed their radiometric quality and content with respect to land cover and land use. The spatial distribution of night lights as imaged by EROS-B corresponded with night-time images acquired by an airborne camera, although EROS-B was not as sensitive to low light levels. Using land cover and land use data at the statistical local area level, we could statistically explain 89% of the variability in night-time lights. Arterial roads and commercial and service areas were found to be some of the brightest land use types. Overall, we found that EROS-B imagery provides fine spatial resolution images of night lights, opening new avenues for studying light pollution in cities worldwide. |
| Address |
Department of Geography, The Hebrew University of Jerusalem, Mt. Scopus, Jerusalem 91905, Israel. |
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| Publisher |
Elsevier |
Place of Publication |
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| ISSN |
0034-4257 |
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Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
307 |
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| Author |
Bennie, J.; Davies, T.W.; Duffy, J.P.; Inger, R.; Gaston, K.J. |
| Title |
Contrasting trends in light pollution across Europe based on satellite observed night time lights |
Type |
Journal Article |
| Year |
2014 |
Publication |
Scientific Reports |
Abbreviated Journal |
Sci Rep |
| Volume |
4 |
Issue |
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Pages |
3789 |
| Keywords |
remote sensing; light pollution; light at night; DMSP-OLS; satellite; light pollution reduction |
| Abstract |
Since the 1970s nighttime satellite images of the Earth from space have provided a striking illustration of the extent of artificial light. Meanwhile, growing awareness of adverse impacts of artificial light at night on scientific astronomy, human health, ecological processes and aesthetic enjoyment of the night sky has led to recognition of light pollution as a significant global environmental issue. Links between economic activity, population growth and artificial light are well documented in rapidly developing regions. Applying a novel method to analysis of satellite images of European nighttime lights over 15 years, we show that while the continental trend is towards increasing brightness, some economically developed regions show more complex patterns with large areas decreasing in observed brightness over this period. This highlights that opportunities exist to constrain and even reduce the environmental impact of artificial light pollution while delivering cost and energy-saving benefits. |
| Address |
Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall, UK TR10 9EZ |
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English |
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| ISSN |
2045-2322 |
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PMID:24445659; PMCID:PMC3896907 |
Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
328 |
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| Author |
Henderson, J.V.; Storeygard, A.; Weil, D.N. |
| Title |
Measuring Economic Growth From Outer Space |
Type |
Journal Article |
| Year |
2012 |
Publication |
The American Economic Review |
Abbreviated Journal |
Am Econ Rev |
| Volume |
102 |
Issue |
2 |
Pages |
994-1028 |
| Keywords |
satellite data; remote sensing; economics; social science |
| Abstract |
GDP growth is often measured poorly for countries and rarely measured at all for cities or subnational regions. We propose a readily available proxy: satellite data on lights at night. We develop a statistical framework that uses lights growth to augment existing income growth measures, under the assumption that measurement error in using observed light as an indicator of income is uncorrelated with measurement error in national income accounts. For countries with good national income accounts data, information on growth of lights is of marginal value in estimating the true growth rate of income, while for countries with the worst national income accounts, the optimal estimate of true income growth is a composite with roughly equal weights. Among poor-data countries, our new estimate of average annual growth differs by as much as 3 percentage points from official data. Lights data also allow for measurement of income growth in sub- and supranational regions. As an application, we examine growth in Sub Saharan African regions over the last 17 years. We find that real incomes in non-coastal areas have grown faster by 1/3 of an annual percentage point than coastal areas; non-malarial areas have grown faster than malarial ones by 1/3 to 2/3 annual percent points; and primate city regions have grown no faster than hinterland areas. Such applications point toward a research program in which “empirical growth” need no longer be synonymous with “national income accounts.” |
| Address |
National Bureau of Economic Research, 1050 Massachusetts Avenue, Cambridge, MA 02138 |
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American Economic Association |
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English |
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| ISSN |
0002-8282 |
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| Notes |
PMID:25067841; PMCID:PMC4108272 |
Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
364 |
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| Author |
Kyba, C.C.M.; Tong, K.P.; Bennie, J.; Birriel, I.; Birriel, J.J.; Cool, A.; Danielsen, A.; Davies, T.W.; Outer, P.N. den; Edwards, W.; Ehlert, R.; Falchi, F.; Fischer, J.; Giacomelli, A.; Giubbilini, F.; Haaima, M.; Hesse, C.; Heygster, G.; Hölker, F.; Inger, R.; Jensen, L.J.; Kuechly, H.U.; Kuehn, J.; Langill, P.; Lolkema, D.E.; Nagy, M.; Nievas, M.; Ochi, N.; Popow, E.; Posch, T.; Puschnig, J.; Ruhtz, T.; Schmidt, W.; Schwarz, R.; Schwope, A.; Spoelstra, H.; Tekatch, A.; Trueblood, M.; Walker, C.E.; Weber, M.; Welch, D.L.; Zamorano, J.; Gaston, K.J. |
| Title |
Worldwide variations in artificial skyglow |
Type |
Journal Article |
| Year |
2015 |
Publication |
Scientific Reports |
Abbreviated Journal |
Sci. Rep. |
| Volume |
5 |
Issue |
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Pages |
8409 |
| Keywords |
Skyglow; light pollution; measurements; remote sensing; sky brightness; calibration |
| Abstract |
Despite constituting a widespread and significant environmental change, understanding of artificial nighttime skyglow is extremely limited. Until now, published monitoring studies have been local or regional in scope, and typically of short duration. In this first major international compilation of monitoring data we answer several key questions about skyglow properties. Skyglow is observed to vary over four orders of magnitude, a range hundreds of times larger than was the case before artificial light. Nearly all of the study sites were polluted by artificial light. A non-linear relationship is observed between the sky brightness on clear and overcast nights, with a change in behavior near the rural to urban landuse transition. Overcast skies ranged from a third darker to almost 18 times brighter than clear. Clear sky radiances estimated by the World Atlas of Artificial Night Sky Brightness were found to be overestimated by ~25%; our dataset will play an important role in the calibration and ground truthing of future skyglow models. Most of the brightly lit sites darkened as the night progressed, typically by ~5% per hour. The great variation in skyglow radiance observed from site-to-site and with changing meteorological conditions underlines the need for a long-term international monitoring program. |
| Address |
Leibniz-Institute for Freshwater Ecology and Inland Fisheries, Berlin, Germany |
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Thesis |
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| Publisher |
Nature |
Place of Publication |
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Editor |
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| Language |
English |
Summary Language |
English |
Original Title |
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Series Title |
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Series Issue |
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Edition |
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| ISSN |
2045-2322 |
ISBN |
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Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
1103 |
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| Author |
Huang, Q.; He, C.; Gao, B.; Yang, Y.; Liu, Z.; Zhao, Y.; Dou, Y. |
| Title |
Detecting the 20 year city-size dynamics in China with a rank clock approach and DMSP/OLS nighttime data |
Type |
Journal Article |
| Year |
2015 |
Publication |
Landscape and Urban Planning |
Abbreviated Journal |
Landscape and Urban Planning |
| Volume |
137 |
Issue |
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Pages |
138-148 |
| Keywords |
remote sensing |
| Abstract |
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Edition |
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| ISSN |
0169-2046 |
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no |
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LoNNe @ christopher.kyba @ |
Serial |
1104 |
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