Does this actual case reflect the conceptual model well? Compare the ideal configuration!
Wind Vectors 1000 hPa:
Wind vectors at the surface show very low wind speeds. Nevertheless the confluence can be seen. A LAM model would give better results showing the line of convergence sharply aligned along the mountain ridge.
Wind vectors at the surface show very low wind speeds. Nevertheless the confluence can be seen. A LAM model would give better results showing the line of convergence sharply aligned along the mountain ridge.
Wind Vectors 850 hPa:
Wind vectors at 850 hPa show the confluence and convergence even better than at the surface. This is somewhat unusual because converegnce is the better seen in lower levels.
Wind vectors at 850 hPa show the confluence and convergence even better than at the surface. This is somewhat unusual because converegnce is the better seen in lower levels.
Wind Vectors 700 hPa:
At this level convergence is hardly seen any more. Mountain tops are below 700 hPa and therefore do not effect the air stream very much. This is quite typical for convergence lines.
At this level convergence is hardly seen any more. Mountain tops are below 700 hPa and therefore do not effect the air stream very much. This is quite typical for convergence lines.
Divergence:
The field from the global ECMWF model indicates the area of convergence very well. Therefore, this typical condition for the conceptual model Orographic Convergence Lines is fulfilled.
The field from the global ECMWF model indicates the area of convergence very well. Therefore, this typical condition for the conceptual model Orographic Convergence Lines is fulfilled.
Vertical Motion (Omega):
The field of vertical motion from the ECMWF model shows some upward motion in the area of the Orographic Convergence Lines, especially over South Greece. However the relation is by far not so good as can be expected from a LAM model.
The field of vertical motion from the ECMWF model shows some upward motion in the area of the Orographic Convergence Lines, especially over South Greece. However the relation is by far not so good as can be expected from a LAM model.