Cold night in Labrador, Canada

January 22nd, 2015 |
Suomi NPP VIIRS 11.45 um IR channel image, with METAR surface reports

Suomi NPP VIIRS 11.45 um IR channel image, with METAR surface reports

With a cloud-free sky and light winds under a dome of high pressure, strong radiational cooling over a deep snowpack allowed the overnight low temperature to drop to -47º F (-43.9º C) at Wabush Lake (station identifier CYWK) in far western Labrador — this was quite possibly the coldest site in North America on 22 January 2015 (the coldest overnight low temperature in Alaska that morning was -39º F or -39.4º C at Galena). AWIPS images of Suomi NPP VIIRS 11.45 µm IR channel data (above) and MODIS 11.0 µm IR channel data (below) showed minimum surface IR brightness temperatures of -47º C or -52.6º F (darker blue color enhancement) in the western Labrador.

MODIS 11.0 um IR channel image, with METAR surface reports

MODIS 11.0 um IR channel image, with METAR surface reports

A comparison of 1-km resolution Soumi NPP VIIRS 11.45 µm and 4-km resolution GOES-13 10.7 µm IR images (below) showed the advantage of higher spatial resolution for more accurately locating the coldest regions.

Suomi NPP VIIRS 11.45 um and GOES-13 10.7 um IR channel images

Suomi NPP VIIRS 11.45 um and GOES-13 10.7 um IR channel images

FY-2G sends its first image

January 22nd, 2015 |
FY-2G Color Composite Image from 0500 UTC 8 January 2015

FY-2G Color Composite Image from 0500 UTC 8 January 2015 (Click to enlarge)

The Chinese Meteorological Satellite FY-2G was launched on 31 December 2014 from Xichang Launch Center in Sichuan Province. It has achieved Geostationary Orbit at 99.5º E and its first full disk Color Composite image, above, from 8 January 2015, has been released.

For more information on FY-2G, click here. FY-2G is the eventual replacement for FY-2E at 105º E.