Quote:
Originally Posted by AndrewJ
I was thinking the same thing last night when Access noted near 100% cover and GFS showed zero ( GFS was correct )???
Then i looked at the detailed plots
Ref attached plots for today
It seems that in some cases, low middle and high cloud are all low but total cloud is very high????
( last night, i had a set of zero, zero, zero, 100% )
Andrew
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This situation has been observed once before and is most likely associated with the recent upgrade to the ACCESS-R model. If you were looking at Mount Burnett's meteogram last night you would not have seen this anomaly which was probably due to fog being predicted by the model for locations near the coast (e.g. Melbourne and Geelong) and somehow counting towards the total cloud cover value. This situation will require further investigation and possible modification to the meteogram, and be clarified once the updated model documentation is released by the Bureau of Meteorology.