VIIRS Day/Night Band images showing areas of Sandy-related power outages

November 1st, 2012
Suomi NPP VIIRS 0.7 µm Day/Night Band images (pre-Sandy, and post-Sandy)

Suomi NPP VIIRS 0.7 µm Day/Night Band images (pre-Sandy, and post-Sandy)

As seen in other examples posted on this blog, the Suomi NPP VIIRS 0.7 µm Day/Night Band (DNB) is useful for detecting city lights at night. A comparison of “pre-Sandy” (a cloud-free night way back on 31 August 2012) and “post-Sandy” (01 November 2012) DNB images displayed using McIDAS-V (above) showed some of the areas that remained without power in the wake of the landfall of Hurricane Sandy on 29 October 2012 — two areas that stand out are western parts of Long Island, New York and central New Jersey. You can also interactively fade between the before/after DNB images using this Java applet.

A comparison of AWIPS images of the 01 November DNB data with the corresponding 10.8-3.74 µm  “fog/stratus product” (below) showed that those two areas of interest — western Long Island, and central New Jersey — were not obscured by any significant low fog/stratus  features (yellow to red color enhancement) or any dense high cirrus clouds (black color enhancement).

Suomi NPP VIIRS 0.7 µm Day/Night Band image and "Fog/stratus product" image

Suomi NPP VIIRS 0.7 µm Day/Night Band image and “Fog/stratus product” image

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