Cal. Code Regs. tit. 17, § 80320
Limiting Mean 500-Millibar Heights* by Month
Month
Table 1*
Table 2*
Table 3*
January
5710*
5750*
5630*
February
5710
5740
5620
March
5710
5740
5630
April
5720
5760
5660
May
5770
5800
5710
June
5820
5850
5780
July
5850
5880
5830
August
5870
5880
5840
September
5850
5870
5810
October
5820
5850
5760
November
5770
5810
5700
December
5730
5780
5630
* All heights in meters.
Agricultural Burn Meteorological Factors
(Sacramento Valley Air Basin)
Table 4 A.M. STABILITY
Table 5 WIND SPEED
°F
M.F.
MPH
M.F.
≥ 17
0.0
0 to 2
0.0
15 or 16
0.1
3
0.1
13 or 14
0.2
4
0.2
11 or 12
0.3
5
0.3
9 or 10
0.4
6
0.4
7 or 8
0.5
7
0.5
5 or 6
0.6
8
0.6
3 or 4
0.7
9
0.7
1 or 2
0.8
10
0.8
0 or (-1)
0.9
11
0.9
≤ (-2)
1.0
≥ 12
1.0
The basinwide meteorological factor (B.M.F.) is equal to the arithmetic mean of the meteorological factors (M.F.) from Tables 4 and 5.
A.M. Stability: 3,000-foot temperature (a.m.) (°F) minus surface minimum temperature (°F).
Wind Speed: Surface to 3,000 feet average wind speed (mph).
Note: Authority cited: Sections 39600, 39601, 41856 and 41859, Health and Safety Code. Reference: Sections 41855, 41856, 41857 and 41859, Health and Safety Code.
1. Amendment filed 9-30-83; effective thirtieth day thereafter (Register 83, No. 40).
2. Amendment filed 3-14-2001; operative 3-14-2001 pursuant to Government Code section 11343.4 (Register 2001, No. 11).