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Author Qiu, S.; Shao, X.; Cao, C.; Uprety, S. url  doi
openurl 
  Title (up) Feasibility demonstration for calibrating Suomi-National Polar-Orbiting Partnership Visible Infrared Imaging Radiometer Suite day/night band using Dome C and Greenland under moon light Type Journal Article
  Year 2016 Publication Journal of Applied Remote Sensing Abbreviated Journal J. Appl. Remote Sens  
  Volume 10 Issue 1 Pages 016024  
  Keywords Remote Sensing; Instrumentation  
  Abstract The day/night band (DNB) of the Visible Infrared Imaging Radiometer Suite (VIIRS) onboard Suomi National Polar-orbiting Partnership (Suomi-NPP) represents a major advancement in night time imaging capabilities. DNB covers almost seven orders of magnitude in its dynamic range from full sunlight to half-moon. To achieve this large dynamic range, it uses four charge-coupled device arrays in three gain stages. The low gain stage (LGS) gain is calibrated using the solar diffuser. In operations, the medium and high gain stage values are determined by multiplying the gain ratios between the medium gain stage, and LGS, and high gain stage (HGS) and LGS, respectively. This paper focuses on independently verifying the radiometric accuracy and stability of DNB HGS using DNB observations of ground vicarious calibration sites under lunar illumination at night. Dome C in Antarctica in the southern hemisphere and Greenland in the northern hemisphere are chosen as the vicarious calibration sites. Nadir observations of these high latitude regions by VIIRS are selected during perpetual night season, i.e., from April to August for Dome C and from November to January for Greenland over the years 2012 to 2013. Additional selection criteria, such as lunar phase being more than half-moon and no influence of straylight effects, are also applied in data selection. The lunar spectral irradiance model, as a function of Sun–Earth–Moon distances and lunar phase, is used to determine the top-of-atmosphere reflectance at the vicarious site. The vicariously derived long-term reflectance from DNB observations agrees with the reflectance derived from Hyperion observations. The vicarious trending of DNB radiometric performance using DOME-C and Greenland under moon light shows that the DNB HGS radiometric variability (relative accuracy to lunar irradiance model and Hyperion observation) is within 8%. Residual variability is also discussed.  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1931-3195 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial 1372  
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Author Datta, S.; Samanta, D.; Sinha, P.; Chakrabarti, N. url  doi
openurl 
  Title (up) Gender features and estrous cycle variations of nocturnal behavior of mice after a single exposure to light at night Type Journal Article
  Year 2016 Publication Physiology & Behavior Abbreviated Journal Physiol Behav  
  Volume 164 Issue Pt A Pages 113-122  
  Keywords Animals  
  Abstract Light at night alters behavior and cognitive performances in rodents, the variations of which in gender and stages of reproductive cycle in females are elusive. Young mice habituated in light:dark (12:12h) cycle were given a single exposure of light (100lx) at early night for one hour duration followed by experimentations in open field (closed wall with circular big arena), elevated plus maze and square habituated field for memory performance using novel object recognition task. Light effects were compared with results found during without light conditions. Proestrous females appeared to have greater locomotor activity, less anxiety and better memory performance compared to the diestrous females at night without light exposure. The status of locomotor activity, anxiety and memory performance of male mice at night without light exposure appeared to be comparable to females where the stage of estrous cycle is important to characterize the nocturnal behavior of male mice. Light maximally affected proestrous females with decrease in locomotor activity, increase in anxiety and failure of memory performance. Male and diestrous female mice performed memory performance without alteration of locomotor activity and anxiety after exposure to light where males performed better memory performance with greater locomotor activity and more anxiety compared to that of diestrous females. The present study characterizes the mice nocturnal behavior with and without a single exposure to light stimuli with its gender features and estrous cycle variation. In addition, the study indicates an association of memory performance with locomotor activity and anxiety in mice nocturnal behavior.  
  Address Department of Physiology, University of Calcutta, Kolkata, West Bengal, India. Electronic address: ncphysiolcu@gmail.com  
  Corporate Author Thesis  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0031-9384 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:27241632 Approved no  
  Call Number LoNNe @ kyba @ Serial 1521  
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Author Pipia, L.; Alamús, R.; Tardà, A.; Pérez-Aragüés, F.; Palà, V.; Corbera, J.; Arnaldich, J. url  doi
openurl 
  Title (up) Generación de mapas de luminancia urbana a partir de un sensor hiperespectral VNIR y una cámara fotogramétrica digital Type Journal Article
  Year 2016 Publication Revista de Teledetección Abbreviated Journal Rev. Teledetec.  
  Volume Issue 47 Pages 85  
  Keywords Remote Sensing  
  Abstract This paper puts forward a methodology for the generation of high resolution luminance maps from simultaneous hyperspectral VNIR and photogrammetric imagery. The integration of hyperspectral radiance at ground level, properly weighted by the photopic-based coefficients, plus a sensor fusion strategy, provides for the first time a quantitative description of the luminous flux at high spatial resolution and with multi-angle geometry. Accordingly, this methodology allows following up any strategic policy aimed to improve urban illumination management and quantifying its effects in terms of energetic efficiency.  
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  Language Spanish Summary Language Original Title Generación de mapas de luminancia urbana a partir de un sensor hiperespectral VNIR y una cámara fotogramétrica digital  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1133-0953 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial 1616  
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Author Mendez, N.; Halabi, D.; Spichiger, C.; Salazar, E.R.; Vergara, K.; Alonso-Vasquez, P.; Carmona, P.; Sarmiento, J.M.; Richter, H.G.; Seron-Ferre, M.; Torres-Farfan, C. url  doi
openurl 
  Title (up) Gestational Chronodisruption Impairs Circadian Physiology in Rat Male Offspring, Increasing the Risk of Chronic Disease Type Journal Article
  Year 2016 Publication Endocrinology Abbreviated Journal Endocrinology  
  Volume 157 Issue 12 Pages 4654-4668  
  Keywords Animals  
  Abstract Chronic exposure to light at night, as in shift work, alters biological clocks (chronodisruption), impacting negatively pregnancy outcome in human. Actually, the interaction of maternal and fetal circadian systems could be a key factor determining a fitting health in adult. We propose that chronic photoperiod shifts (CPS) during pregnancy, alter maternal circadian rhythms, and impair circadian physiology in the adult offspring, increasing health risks. Pregnant rats were exposed to normal photoperiod (12h-light/12h-dark) or to CSP until 85 gestation. The effects of gestational CPS were evaluated on the mother and adult offspring. In the mother we measured rhythms of heart-rate, body temperature and activity through gestation, and daily rhythms of plasma variables: melatonin, corticosterone, aldosterone and markers of renal function; at 18 days of gestation. In adult offspring, we measured rhythms of clock gene expression in the suprachiasmatic nucleus (SCN), locomotor activity, body temperature, heart rate, blood pressure, plasma variables, glucose tolerance and corticosterone response to adrenocorticotropic hormone (ACTH). CPS altered all maternal circadian rhythms; lengthened gestation and increased newborn weight. The adult CPS offspring presented normal rhythms of clock gene expression in the SCN, locomotor activity and body temperature. However, the daily rhythm of plasma melatonin was absent, and corticosterone, aldosterone, renal markers, blood pressure and heart-rate rhythms were altered. Moreover, CPS offspring presented decreased glucose tolerance and abnormal corticosterone response to ACTH. Altogether, these data shows that gestational CPS induced long-term effects on the offspring circadian system, wherein a normal SCN coexists with altered endocrine, cardiovascular and metabolic function.  
  Address Laboratory of Developmental Chronobiology, Institute of Anatomy, Histology and Pathology and  
  Corporate Author Thesis  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0013-7227 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:27802074 Approved no  
  Call Number LoNNe @ kyba @ Serial 1550  
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Author Sharma, R.C.; Tateishi, R.; Hara, K.; Gharechelou, S.; Iizuka, K. url  doi
openurl 
  Title (up) Global mapping of urban built-up areas of year 2014 by combining MODIS multispectral data with VIIRS nighttime light data Type Journal Article
  Year 2016 Publication International Journal of Digital Earth Abbreviated Journal International Journal of Digital Earth  
  Volume Issue Pages 1-17  
  Keywords Remote Sensing  
  Abstract An improved methodology for the extraction and mapping of urban built-up areas at a global scale is presented in this study. The Moderate Resolution Imaging Spectroradiometer (MODIS)-based multispectral data were combined with the Visible Infrared Imager Radiometer Suite (VIIRS)-based nighttime light (NTL) data for robust extraction and mapping of urban built-up areas. The MODIS-based newly proposed Urban Built-up Index (UBI) was combined with NTL data, and the resulting Enhanced UBI (EUBI) was used as a single master image for global extraction of urban built-up areas. Due to higher variation of the EUBI with respect to geographical regions, a region-specific threshold approach was used to extract urban built-up areas. This research provided 500-m-resolution global urban built-up map of year 2014. The resulted map was compared with three existing moderate-resolution global maps and one high-resolution map in the United States. The comparative analysis demonstrated finer details of the urban built-up cover estimated by the resultant map.  
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  Series Volume Series Issue Edition  
  ISSN 1753-8947 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial 1423  
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