Rapid Refresh (RAP) and High-Resolution Rapid Refresh (HRRR) Forum
small implementation today
Posted By: Geoff Manikin
Date: 5-September-06 1751Z
A small package of changes related to lake temperatures was implemented into the operational RUC at 12Z today, 5 September 2006. This is in response to issues with the operational SST analysis providing some very questionable values for certain bodies of water. Similar changes were made to the operational NAM in late August to deal with the same issue.
Climatologies are now used for the Great Salt Lake, the Salton Sea, and Lake Champlain. For several large lakes in northern Minnesota, Manitoba, and Ontario (including Lake of the Woods, Lake Winnipeg, Lake Winnipegosis, and Lake Nipigon), a more reliable lake temperature is used at points where the recent values do not appear reasonable. The value will generally come from northern Lake Superior for deep lakes and northern Lake Winnipeg for shallow lakes.
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