The spatial variability of turbulence above a forest has been examined. Two measurement towers were erected 800 m apart within a heterogeneous mixed forest located in the north east of the Netherlands. The measurements of u*/u were analysed and subsequently used to test a surface layer model. The model simulated the magnitude of the measurements reasonably well, but measured trends were not always reproduced by the model. The variable (du/dz)/u did not adapt as quickly to the new surface as u*/u. This is in agreement with Schmid (1994), and can be explained by a local decrease in mixing length. It is recommended to adapt the mixing length near a surface transition to improve the accuracy of surface layer models of heterogeneous landscapes.
|Tijdschrift||Theoretical and Applied Climatology|
|Nummer van het tijdschrift||1-2|
|Status||Published - 1999|
|Evenement||22nd General Assembly of the European-Geophysical-Society - , Austria|
Duur: 21-apr.-1997 → 25-apr.-1997