<![CDATA[Temp in Caribbean]]>The temperatures displayed for most of the Caribbean islands has been a bit off all spring and summer. Example: The past week has shown temps around 82 degrees in Grenada but it is actually 87-90 degrees most days. Not sure how the info is derived but it is not quite correct.

]]>https://community.windy.com/topic/4476/temp-in-caribbeanRSS for NodeSun, 19 Jul 2026 09:15:39 GMTSun, 10 Sep 2017 12:27:01 GMT60<![CDATA[Reply to Temp in Caribbean on Tue, 12 Sep 2017 10:49:37 GMT]]>@cape
If you could see the temp. on grid point, it looks like that:
0_1505212936620_upload-6b1891f4-1ccb-4507-99c8-8ccdf9a7c611

Small islands (like St. Croix) are represended by only one grid point and the temp. at this grid point is "smoothed" with the other nearby points.
Biger islands (like Jamaica) have more reliable data.
Meteorologists try to improve the accuracy by makings models with finest grid but it needs more (much more) computing power
especialy if you want a model with global coverage.

]]>https://community.windy.com/post/7249https://community.windy.com/post/7249Tue, 12 Sep 2017 10:49:37 GMT<![CDATA[Reply to Temp in Caribbean on Tue, 12 Sep 2017 00:23:49 GMT]]>Thank you for your help to understand this better.

]]>https://community.windy.com/post/7231https://community.windy.com/post/7231Tue, 12 Sep 2017 00:23:49 GMT<![CDATA[Reply to Temp in Caribbean on Sun, 10 Sep 2017 14:33:43 GMT]]>@cape
its truth and it has to do with the size of an island.
Forecast models compute temp. (and other variables) in places called grid points with resolution of 9 km for ECMWF (22 km for GFS). Some small islands are "invisible" by the model and the temperature given is that of the air above the sea.

]]>https://community.windy.com/post/7161https://community.windy.com/post/7161Sun, 10 Sep 2017 14:33:43 GMT