Frost Protection - UTL Repository

INTRODUCTION
FIGURE 1.2
Mean air and dew-point temperatures at 1.5 m height and mean wind speed at
2.0 m height during the December 1998 event at Lindcove, California, USA
25
14
T E M P E R A T U R E ( ° C)
20
15
10
5
0
-5
18-Dec
25-Dec
12
10
8
6
4
2
W I N D S P E E D ( m s -1 )
-10
0
0.00
12.00
0.00
12.00
0.00
12.00
0.00
12.00
0.00
12.00
0.00
12.00
0.00
12.00
0.00
12.00
0.00
Wind Speed Air Temp Dew-Point
FIGURE 1.3
Development of an inversion over an apple orchard in northern Portugal
H E I G H T ( m)
25
20
15
10
5
0
-2.0 -1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0
T E M P E R A T U R E ( ° C)
02h 01h 00h 23h 22h
5