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Author Sloane, M.; Slater, D.; Entwistle, J.
Title Tackling Social Inequalities in Public Lighting Type Journal Article
Year 2016 Publication Abbreviated Journal (up)
Volume Issue Pages
Keywords Society
Abstract 2This report is based on research findings of the Configuring Light/Staging the Social research programme (CL) based at the London School of Economics and Political Science (LSE), as well as on discussions of the Configuring Light expert working group. Consisting of high-profile experts and stakeholders in the fields of design, planning and policy-making, this group was established by CL to develop a new agenda for tackling social inequalities in public lighting. Members of the working group are listed at the end of this document.This project was run by the LSE-based Configuring Light/Staging the Social research programme and funded by LSE Knowledge Exchange and Impact funding.
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Corporate Author London School of Economics Thesis
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Call Number GFZ @ kyba @ Serial 2528
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Author Guillemin, A.
Title The Heavens: An Illustrated Handbook of Popular Astronomy Type Book Whole
Year 1867 Publication Abbreviated Journal (up)
Volume Issue Pages
Keywords Skyglow
Abstract Relevant excerpt: In large towns, the thousands of gas-lamps or other lights render the observation of the Zodiacal Light very difficult, not to say impossible, at all times. On the other hand, in stations conveniently situated, it can be seen at the various epochs of the year, even in the temperate zones.
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Publisher Richard Bently Place of Publication London Editor J. Norman Lockyer
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Call Number GFZ @ kyba @ Serial 2537
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Author Garstang, R.H.
Title Mount Wilson Observatory: The Sad Story of Light Pollution Type Journal Article
Year 2004 Publication The Observatory Abbreviated Journal (up)
Volume 124 Issue Pages 14-21
Keywords Skyglow
Abstract The brightness of night sky at the Mount Wilson Observatory has been calculated for the years from 1900 to 2000. Data on the street lighting in Los Angeles City and estimates for light from residences, shops, and businesses have been used to calculate the per capita light-emission rates. These have been used in model brightness calculations with the populations of many cities in the Los Angeles Basin. The results show the relentless increase in night-sky brightness that is continuing at this time.
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Call Number IDA @ intern @ Serial 2538
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Author Lei, S., Xu, J., Li, Y, Du, C., Mu, M., Zeng, S., Miao, S., Bi, S., Wang, Q., & Lyu, H.
Title Remote Monitoring of PSD Slope Under the Influence of Sand Dredging Activities in Lake Hongze Based on Landsat-8/OLI Data and VIIRS/DNB Night-Time Light Composite Data Type Journal Article
Year 2019 Publication IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing Abbreviated Journal (up)
Volume Issue Pages 1-15
Keywords Remote Sensing
Abstract Particle size distribution (PSD) is an important characterization parameter of the particle size structure of suspended particles, which is vulnerable to human activities such as sand dredging. In this study, sand dredging numbers were evaluated by the accumulated radiance algorithm using the night-time light composite data of the visible infrared imaging radiometer suite, and the PSD slope was derived by band ratio algorithm of Landsat-8/operational land imager (OLI) imagery. Then, the influence of sand mining on PSD slope was analyzed. We draw several crucial findings. First, the ratio of RRrs(Red) to RRrs(Green) based on OLI imagery was capable of retrieving PSD slope with good robustness (R2 = 0.71, p < 0.01, n = 41) and verified acceptance (mean absolute percentage error = 4.29%, root mean square error = 0.19, n = 20), and the PSD slope in HZL was lower in summer than in the other seasons from 2014 to 2017. Second, The night active vessels extracted from the night-time images show that sand dredging activities began at the outlet of Chengzi Lake (CZL) in April 2012, spread to the whole lake between 2014 and 2016, and then stopped in the northeast region in March 2017 due to the strict control of the local government. Third, the PSD slope is strongly influenced by sand mining, which is positively correlated with the number of sand dredgers (R2 = 0.92), i.e., the PSD slope increases 0.21 per 100 working sand dredgers in CZL.
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Call Number IDA @ intern @ Serial 2540
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Author Schwarting, T., McIntire, J., Oudrari, H., & Xiong, X
Title JPSS-1/NOAA-20 VIIRS Day-Night Band Prelaunch Radiometric Calibration and Performance Type Journal Article
Year 2019 Publication IEEE Transactions on Geoscience and Remote Sensing Abbreviated Journal (up)
Volume Issue Pages 1-13
Keywords Instrumentation
Abstract The Visible Infrared Imaging Radiometer Suite (VIIRS) on board the first Joint Polar-Orbiting Satellite System series 1 (JPSS-1) has a panchromatic, three gain stage, day-night band (DNB) capable of imaging the Earth under illumination conditions ranging from reflected moonlight to daytime scenes. The DNB has four charged-coupled devices (CCDs) with 32 different modes of time-delay integration and subpixel aggregation to achieve high SNR in low light conditions while maintaining roughly constant spatial resolution across scan. During the prelaunch testing phase, these 32 different aggregation modes are separately calibrated over a large dynamic range (covering seven orders of magnitude) through a series of radiometric tests designed to generate initial calibration coefficients for the sensor data record (SDR) operational algorithm, assess radiometric performance, and determine compliance with the sensor design requirements. Early in the environmental testing at the Raytheon El Segundo facility, nonlinear behavior was discovered in some DNB edge of scan aggregation modes at low signal levels. In response to this nonlinearity, the test program was altered to characterize the radiometric performance both in the baseline configuration and with a modified aggregation scheme that eliminates the modes used at the end of scan, replacing them with an unaffected adjacent mode and trading off spatial resolution for improved linearity. Presented in this paper is the radiometric performance under both sensor configurations including dynamic range, sensitivity, radiometric uncertainty, and nonlinearity along with a discussion of the potential impact to DNB on-orbit calibration and SDR performance.
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Notes Approved no
Call Number IDA @ intern @ Serial 2541
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