2011-05-17 Matti Leskinen

Arctic birds migrating towards ENE
along the Gulf of Finland 2011-05-16

Echoes of rain show that the birds had tail-wind, and their ground speed was about 30 m/s.
Early night small song birds started to migrate towards NNE about 20 m/s.


Dual PRT measurements

Reflectivity
16:25 UTC


Radial velocity
16:25 UTC


Reflectivity
17:25 UTC


Radial velocity
17:25 UTC


Reflectivity
18:25 UTC


Radial velocity
18:25 UTC


Reflectivity
18:25 UTC


Radial velocity
18:25 UTC


Reflectivity
19:25 UTC


Radial velocity
19:25 UTC


Reflectivity
20:45 UTC


Radial velocity
20:45 UTC



Linear depolarization ratio and reflectivity

Linear depolarization
16:20 UTC


Linear depolarization
17:20 UTC


Linear depolarization
18:20 UTC


Reflectivity
18:20 UTC


Linear depolarization
19:20 UTC


Linear depolarization
18:20 UTC


Reflectivity
18:20 UTC



Dual polarization measurements

Reflectivity
18:15 UTC


Differential reflectivity
18:15 UTC


Differential phase
18:15 UTC


Radial velocity
18:15 UTC


Doppler spectrum width
18:15 UTC


Reflectivity
19:15 UTC


Differential reflectivity
19:15 UTC


Differential phase
19:15 UTC


Radial velocity
19:15 UTC


Doppler spectrum width
19:15 UTC


Reflectivity
20:55 UTC


Differential reflectivity
20:55 UTC


Differential phase
20:55 UTC


Radial velocity
20:55 UTC


Doppler spectrum width
20:55 UTC



Vertical cross-sections over the sea







Matti.Leskinen@helsinki.fi
((TOP))