Noticed a few threads lately talking about the North West Passage
and wondered how does one know when the passage
is free enough of ice to transit?
Thought this would be a good job for the new Landsat feature of GE2KAP. It creates charts
from the Landsat 8 satellite
the entire earth every 16 days.
First I used GE2KAP to create a chart of Google earth
for part of the NWP, images
from it were from taken in 2013. Then I downloaded the Landsat images near the entrance to the NWP which were acquired yesterday by Landat and used the GE2KAP Landsat_chart program to create some charts
The first attachment is the GE chart and shows the outline of the Landsat charts. I put waypoints on the land so I knew where it was in the Landsat charts,
The second attachment is the first Landsat chart showing the channel created from the natural colors bands 432. The second is the one I enhanced the image using the Atmospheric Penetration Infrared Bands 765.
I know the icebergs won't be in the same place in a short time but at least it gives you an idea when the NWP is clear enough for a passage.