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Author Coesfeld, J.; Anderson, S.; Baugh, K.; Elvidge, C.; Schernthanner, H.; Kyba, C.
Title (down) Variation of Individual Location Radiance in VIIRS DNB Monthly Composite Images Type Journal Article
Year 2018 Publication Remote Sensing Abbreviated Journal Remote Sensing
Volume 10 Issue 12 Pages 1964
Keywords Remote Sensing; Instrumentation
Abstract With the growing size and use of night light time series from the Visible Infrared Imaging Radiometer Suite Day/Night Band (DNB), it is important to understand the stability of the dataset. All satellites observe differences in pixel values during repeat observations. In the case of night light data, these changes can be due to both environmental effects and changes in light emission. Here we examine the stability of individual locations of particular large scale light sources (e.g., airports and prisons) in the monthly composites of DNB data from April 2012 to September 2017. The radiances for individual pixels of most large light emitters are approximately normally distributed, with a standard deviation of typically 15–20% of the mean. Greenhouses and flares, however, are not stable sources. We observe geospatial autocorrelation in the monthly variations for nearby sites, while the correlation for sites separated by large distances is small. This suggests that local factors contribute most to the variation in the pixel radiances and furthermore that averaging radiances over large areas will reduce the total variation. A better understanding of the causes of temporal variation would improve the sensitivity of DNB to lighting changes.
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ISSN 2072-4292 ISBN Medium
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Call Number GFZ @ kyba @ Serial 2129
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Author De Miguel, A.
Title (down) Variaci{ó}n del brillo del fondo de cielo en el c{é}nit con la fase y altura de la Luna. Type Journal Article
Year 2012 Publication Abbreviated Journal
Volume Issue Pages
Keywords Remote Sensing
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Call Number LoNNe @ kagoburian @ Serial 922
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Author Secondi, J.; Dupont, V.; Davranche, A.; Mondy, N.; Lengagne, T.; Thery, M.
Title (down) Variability of surface and underwater nocturnal spectral irradiance with the presence of clouds in urban and peri-urban wetlands Type Journal Article
Year 2017 Publication PloS one Abbreviated Journal PLoS One
Volume 12 Issue 11 Pages e0186808
Keywords Skyglow; Ecology
Abstract Artificial light at night (ALAN) is an increasing phenomenon worldwide. It causes a wealth of biological and ecological effects that may eventually affect populations and ecosystems. Despite the growing concern about ALAN, little is known about the light levels species are exposed to at night, especially for wetlands and underwater habitats. We determined nocturnal irradiance in urban and peri-urban wetlands above and under water, and assessed the effect of cloud cover on the variability of ALAN across the urban gradient. Even in aquatic habitats, cloud cover could increase irradiance beyond values observed during clear full moon nights. We report a negative relationship between baseline irradiance and the increase in irradiance during overcast nights. According to this result and previous studies, we propose that the change in the variation regime of ALAN between the urban center and rural land at its periphery is a usual feature. We discuss the ecological and evolutionary implications of this spatial variation in the urban and peri-urban environment.
Address UMR 7179 CNRS-MNHN, Mecanismes Adaptatifs et Evolution, Brunoy, France
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Language English Summary Language Original Title
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ISSN 1932-6203 ISBN Medium
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Notes PMID:29117235; PMCID:PMC5695598 Approved no
Call Number LoNNe @ kyba @ Serial 1801
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Author Levin, N.; Ali, S.; Crandall, D.
Title (down) Utilizing remote sensing and big data to quantify conflict intensity: The Arab Spring as a case study Type Journal Article
Year 2018 Publication Applied Geography Abbreviated Journal Applied Geography
Volume 94 Issue Pages 1-17
Keywords Remote Sensing; Society; Human Health
Abstract Tracking global and regional conflict zones requires spatially explicit information in near real-time. Here, we examined the potential of remote sensing time-series data (night lights) and big data (data mining of news events and Flickr photos) for monitoring and understanding crisis development and refugee flows. We used the recent Arab Spring as a case study, and examined temporal trends in monthly time series of variables which we hypothesized to indicate conflict intensity, covering all Arab countries. Both Flickr photos and night-time lights proved as sensitive indicators for loss of economic and human capital, and news items from the Global Data on Events, Location and Tone (GDELT) project on fight events were positively correlated with actual deaths from conflicts. We propose that big data and remote sensing datasets have potential to provide disaggregated and timely data on conflicts where official statistics are lacking, offering an effective approach for monitoring geopolitical and environmental changes on Earth.
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ISSN 0143-6228 ISBN Medium
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Notes Approved no
Call Number GFZ @ kyba @ Serial 1918
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Author Straka III, W.; Seaman, C.; Baugh, K.; Cole, K.; Stevens, E.; Miller, S.
Title (down) Utilization of the Suomi National Polar-Orbiting Partnership (NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band for Arctic Ship Tracking and Fisheries Management Type Journal Article
Year 2015 Publication Remote Sensing Abbreviated Journal Remote Sensing
Volume 7 Issue 1 Pages 971-989
Keywords Remote Sensing
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ISSN 2072-4292 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ christopher.kyba @ Serial 1091
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