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Surface Layer Height ?

METsen

New member
Hi,
Can anyone provide me with published examples of the "typical" or "average" height (or range) of the near-surface atmosphere? I'm looking for more precise values than the commonly cited lowest 10% of the planetary boundary layer or the lowest tenths of meters above the surface.
Thanks,
METsen
 
We don't have a "typical" or "average" height of the near-surface atmosphere, which may vary both spatially and temporarily.

Are you looking for information for your specific case?
 
Thank you for your answer to my post. I am aware on its variability between convective and stable atmospheres. Textbooks indicate a size of about the lowest approx. 10% of the boundary layer or from (roughly) some tens of meters to about 100 m or so. I was looking of a compilation of the size for some typical cases. Like e.g. Stull in his textbook from 1988 shows in Fig. 9.6 for the roughness lengths. In his newer Textbook of 2017 he mentions at the end of page 74 for the surface layer now the much smaller size of 10m to 25m. However on page 292 he mentions then again 20m to 200m. Also, Stull mentions about 5% of the BL whereas others mention 10%. I am actually looking for height ranges where the temperature profile is about logarithmic in height, and I assumed that this corresponds to the height of the surface layer above the roughness length.
 
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