![Fig. 12. The VZA-COLD detection results of a selected pixel, and high resolution images for Puerto Rico. (a) The accumulated annual NTL change maps from 2013 to 2021 with the latest detected change year presented. (b) The day-of day NTL change map in 2017 over the region enlarged from the white rectangle from Fig. 12a. (c) The time series plot of a selected pixel (red cross in Fig 12b) and the corresponding VZA COLD detection results, in which the red, green, blue, and grey colors indicate the different VZA intervals, the line represent the estimated models, the small dots are the DNB observations, and the large magenta dots are the detected changes. (d) The high-resolution Google Earth image in July 2017 and October 2017. The red squares represet the location and the size of the selected pixel in Fig 12c. The grey background in Figs.12a-b is the Esri ArcMap Dark Grey Canvas base map. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)](https://essic.umd.edu/wp-content/uploads/2022/10/image-29-e1666619775358.png)
Monitoring Nighttime Light Changes with NASA’s Black Marble
ESSIC Scientist Zhuosen Wang has a new paper in Remote Sensing of Environment that proposes the use of NASA’s Black Marble products to monitor nighttime light.
ESSIC Scientist Zhuosen Wang has a new paper in Remote Sensing of Environment that proposes the use of NASA’s Black Marble products to monitor nighttime light.
ESSIC/CISESS Assistant Research Scientist Zhuosen Wang is a co-author on a letter in Science titled “Retired Satellites: A Chance to Shed Light” alongside researchers from the Universities Space Research Association, German Research Centre for Geosciences, Cooperative Institute for Research in the Atmosphere, Earth Observation Center, and Northern Arizona University.
ESSIC Assistant Research Scientist Zhuosen Wang is a co-author on a new paper, “Evaluation of satellite remote sensing albedo retrievals over the ablation area of the southwestern Greenland ice sheet”.