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本帖最后由 duanmupeiyi 于 2010-10-1 14:08 编辑
不是吧....经常零下啊...
除了冬天其他季节还好
听鱼唱 发表于 2010-10-1 07:01 ![]()
Disagree.
. 1point3acres
We can look at the daily temperature record of Seattle area from DEC 2009 to FEB 2010 (the data are obtained from National Weather Service, for details see below). . 1point 3 acres
Assume the winter temperature can be represented by the three month from December to February. Also assume the difference among years is not significant. You can argue about these assumptions. But for this discussion regarding whether Seattle is "often" below zero degree, the assumptions are not unreasonable.
There are total 90 days.
Simply exam the summary statistics of the daily min.:. 1point 3 acres
Min. 1st Qu. Median Mean 3rd Qu. Max.
16.00 35.00 40.00 38.29 43.75 49.00. 1point 3 acres
The first quartile is 35, which is greater than 32.
. 1point 3acres
Also count the number of days with min. <= 32. It is 16 and I don't think 16/90 (17.8%) can be considered as "often" given we are discussing minimum here.
In addition, the number of days with average <= 32 is just 7. 7/90 = 7.8%
In conclusion, Seattle is not often below zero degree in winter.
===========
Data:. check 1point3acres for more.
Choose "Monthly Weather Summary (CLM)" for DEC 2009, JAN 2010, and FEB 2010
location is "Seattle-Tacoma"
http://www.weather.gov/climate/index.php?wfo=sew.--
December 2009. 1point 3acres
WFO Monthly/Daily Climate Data
000
CXUS55 KSEW 010945
CF6SEA
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: SEATTLE-TACOMA WA AIRPORT
MONTH: DECEMBER
YEAR: 2009
LATITUDE: 47 27 N-baidu 1point3acres
LONGITUDE: 122 18 W
TEMPERATURE IN F: :PCPN: SNOW: WIND :SUNSHINE: SKY :PK WND
================================================================================
1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17 18
12Z AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR
================================================================================
. ----
1 47 35 41 -1 24 0 0.00 0.0 0 10.5 20 20 M M 3 24 20
2 46 33 40 -2 25 0 0.00 0.0 0 11.3 18 30 M M 1 12 21 30
3 45 30 38 -4 27 0 0.00 0.0 0 3.1 10 20 M M 5 10 20
4 38 30 34 -8 31 0 0.04 0.0 0 3.0 10 350 M M 6 12 14 120
5 42 28 35 -7 30 0 0.00 0.0 0 5.1 20 20 M M 4 1 24 10
6 35 27 31 -11 34 0 0.00 0.0 0 11.7 21 120 M M 6 28 130
7 30 23 27 -14 38 0 0.00 0.0 0 9.4 18 120 M M 1 22 130
8 32 21 27 -14 38 0 0.00 0.0 0 6.8 13 110 M M 2 16 110
9 32 18 25 -16 40 0 0.00 0.0 0 5.1 10 360 M M 1 13 30. 1point 3 acres
10 36 16 26 -15 39 0 0.00 0.0 0 4.2 8 90 M M 1 10 50
11 38 21 30 -11 35 0 0.00 0.0 0 4.6 9 120 M M 4 12 120
12 39 23 31 -10 34 0 0.00 0.0 0 5.5 13 20 M M 7 15 30. ----
13 38 30 34 -7 31 0 T T 0 6.9 21 200 M M 10 1 25 190
14 42 36 39 -2 26 0 0.50 0.0 0 6.0 17 100 M M 10 1 21 100
15 48 38 43 2 22 0 0.29 0.0 0 9.3 18 180 M M 10 1 24 190
16 53 45 49 8 16 0 0.43 0.0 0 12.9 23 180 M M 8 1 31 180
17 50 43 47 7 18 0 0.06 0.0 0 4.6 17 190 M M 9 1 23 190
18 52 41 47 7 18 0 0.02 0.0 0 2.4 12 110 M M 9 1 14 120
19 48 44 46 6 19 0 0.41 0.0 0 5.0 12 10 M M 10 12 14 20
20 57 45 51 11 14 0 0.08 0.0 0 7.5 17 170 M M 9 12 23 170
21 52 38 45 5 20 0 0.55 0.0 0 13.9 26 200 M M 8 1 35 200
22 40 34 37 -3 28 0 0.02 0.0 0 2.8 16 200 M M 9 1 20 200
23 43 34 39 -1 26 0 T 0.0 0 3.3 9 30 M M 8 12 50
24 43 31 37 -3 28 0 0.00 0.0 0 5.4 10 10 M M 5 12 13 30
25 45 30 38 -2 27 0 0.00 0.0 0 8.2 14 80 M M 1 12 17 80. 1point 3 acres
26 53 33 43 3 22 0 0.00 0.0 0 13.8 26 110 M M 0 36 120
27 44 28 36 -4 29 0 0.00 0.0 0 1.4 13 120 M M 4 1 16 120
28 49 35 42 2 23 0 T 0.0 0 3.7 16 100 M M 7 18 90
29 43 30 37 -3 28 0 0.06 0.0 0 4.0 15 130 M M 7 1 20 120
30 46 36 41 1 24 0 0.02 0.0 0 10.3 20 200 M M 7 18 24 210
31 49 39 44 4 21 0 0.27 0.0 0 5.8 14 220 M M 9 1 18 230
================================================================================.--
SM 1355 995 835 0 2.75 T 207.5 M 181
================================================================================
AV 43.7 32.1 6.7 FASTST M M 6 MAX(MPH) ..
MISC ----> # 26 200 # 36 120
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES
COLUMN 17 PEAK WIND IN M.P.H.
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2-baidu 1point3acres
STATION: SEATTLE-TACOMA WA AIRPORT
MONTH: DECEMBER
YEAR: 2009
LATITUDE: 47 27 N
LONGITUDE: 122 18 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 37.9 TOTAL FOR MONTH: 2.75 1 = FOG OR MIST
DPTR FM NORMAL: -2.8 DPTR FM NORMAL: -2.87 2 = FOG REDUCING VISIBILITY
HIGHEST: 57 ON 20 GRTST 24HR 0.67 ON 14-15 TO 1/4 MILE OR LESS
LOWEST: 16 ON 10 3 = THUNDER.--
SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS
TOTAL MONTH: T 5 = HAIL.
GRTST 24HR T ON 13-13 6 = FREEZING RAIN OR DRIZZLE
GRTST DEPTH: 0 7 = DUSTSTORM OR SANDSTORM:
VSBY 1/2 MILE OR LESS
8 = SMOKE OR HAZE
[NO. OF DAYS WITH] [WEATHER - DAYS WITH] 9 = BLOWING SNOW. .и
X = TORNADO
MAX 32 OR BELOW: 3 0.01 INCH OR MORE: 13
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 6. 1point3acres.com
MIN 32 OR BELOW: 15 0.50 INCH OR MORE: 2.google и
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0
[HDD (BASE 65) ]
TOTAL THIS MO. 835 CLEAR (SCALE 0-3) 7
DPTR FM NORMAL 81 PTCLDY (SCALE 4-7) 13
TOTAL FM JUL 1 1931 CLOUDY (SCALE 8-10) 11
DPTR FM NORMAL -36
[CDD (BASE 65) ]. Waral dи,
TOTAL THIS MO. 0
DPTR FM NORMAL 0 [PRESSURE DATA]
TOTAL FM JAN 1 314 HIGHEST SLP M ON M
DPTR FM NORMAL 141 LOWEST SLP 29.55 ON 21
[REMARKS]
#FINAL-12-09#
Jan. 2010
WFO Monthly/Daily Climate Data. .и
000
CXUS55 KSEW 010945
CF6SEA
. From 1point 3acres bbs
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6).
STATION: SEATTLE-TACOMA WA AIRPORT. 1point 3 acres
MONTH: JANUARY
YEAR: 2010
LATITUDE: 47 27 N
LONGITUDE: 122 18 W
TEMPERATURE IN F: :PCPN: SNOW: WIND :SUNSHINE: SKY :PK WND
================================================================================
1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17 18
12Z AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR.google и
================================================================================
1 52 45 49 9 16 0 0.40 0.0 0 14.8 28 190 M M 9 1 37 190. 1point3acres.com
2 47 43 45 5 20 0 0.06 0.0 0 11.6 20 200 M M 9 1 25 210
3 48 39 44 4 21 0 0.03 0.0 0 5.2 10 10 M M 10 12 12 10
4 49 44 47 7 18 0 0.98 0.0 0 8.3 8 150 M M 10 1 10 160
5 50 44 47 7 18 0 0.14 0.0 0 7.5 15 20 M M 10 12 17 10
6 50 42 46 6 19 0 0.00 0.0 0 11.3 17 110 M M 8 22 90
7 48 40 44 4 21 0 0.04 0.0 0 12.6 23 120 M M 7 28 120
8 46 39 43 3 22 0 0.81 0.0 0 10.1 21 100 M M 10 1 26 100
9 54 43 49 9 16 0 0.08 0.0 0 6.1 13 110 M M 8 1 16 120
10 55 44 50 9 15 0 0.09 0.0 0 8.2 18 110 M M 9 23 110
11 57 45 51 10 14 0 1.07 0.0 0 6.8 17 120 M M 10 1 21 130
12 53 47 50 9 15 0 0.53 0.0 0 7.3 15 110 M M 10 1 24 180. Waral dи,
13 56 46 51 10 14 0 0.27 0.0 0 10.5 25 210 M M 9 18 35 230
14 48 45 47 6 18 0 0.28 0.0 0 7.6 20 200 M M 9 1 24 140
15 51 44 48 7 17 0 0.42 0.0 0 8.1 26 180 M M 10 1 36 170
16 45 37 41 0 24 0 0.02 0.0 0 4.2 10 30 M M 9 12 12 30
17 52 42 47 6 18 0 0.15 0.0 0 7.6 17 180 M M 10 1 24 180
18 59 49 54 13 11 0 T 0.0 0 14.7 32 160 M M 9 44 160
19 60 48 54 13 11 0 0.01 0.0 0 11.6 22 120 M M 9 28 120
20 57 42 50 9 15 0 T 0.0 0 10.0 28 110 M M 8 38 120
21 56 45 51 10 14 0 T 0.0 0 9.4 17 110 M M 7 23 120
22 48 40 44 3 21 0 0.00 0.0 0 6.3 15 10 M M 8 17 10
23 49 40 45 4 20 0 0.09 0.0 0 7.3 13 110 M M 8 1 15 110
24 46 37 42 1 23 0 0.36 0.0 0 9.9 20 110 M M 8 1 26 120
. 1point 3 acres25 54 41 48 7 17 0 0.06 0.0 0 6.8 16 140 M M 7 1 36 150
26 48 38 43 1 22 0 0.00 0.0 0 2.7 9 110 M M 7 10 90
27 49 35 42 0 23 0 0.00 0.0 0 2.9 10 110 M M 8 12 14 120
28 55 41 48 6 17 0 0.00 0.0 0 7.9 17 120 M M 10 22 120
29 56 44 50 8 15 0 0.02 0.0 0 5.0 16 100 M M 10 20 90
30 48 43 46 4 19 0 0.18 0.0 0 4.0 12 110 M M 10 1 14 110
31 49 45 47 5 18 0 0.08 0.0 0 4.9 10 210 M M 9 1 13 200
================================================================================
SM 1595 1317 552 0 6.17 0.0 251.2 M 275-baidu 1point3acres
================================================================================
AV 51.5 42.5 8.1 FASTST M M 9 MAX(MPH)
MISC ----> # 32 160 # 44 160
================================================================================. 1point 3 acres
NOTES:.google и
# LAST OF SEVERAL OCCURRENCES
COLUMN 17 PEAK WIND IN M.P.H.
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2
STATION: SEATTLE-TACOMA WA AIRPORT. check 1point3acres for more.
MONTH: JANUARY. check 1point3acres for more.
YEAR: 2010
LATITUDE: 47 27 N
LONGITUDE: 122 18 W
.--
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
.google и
AVERAGE MONTHLY: 47.0 TOTAL FOR MONTH: 6.17 1 = FOG OR MIST
DPTR FM NORMAL: 6.1 DPTR FM NORMAL: 1.04 2 = FOG REDUCING VISIBILITY
HIGHEST: 60 ON 19 GRTST 24HR 1.17 ON 11-12 TO 1/4 MILE OR LESS
LOWEST: 35 ON 27 3 = THUNDER
SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS
TOTAL MONTH: 0.0 INCH 5 = HAIL
GRTST 24HR 0.0 6 = FREEZING RAIN OR DRIZZLE
GRTST DEPTH: 0 7 = DUSTSTORM OR SANDSTORM:
VSBY 1/2 MILE OR LESS ..
8 = SMOKE OR HAZE
[NO. OF DAYS WITH] [WEATHER - DAYS WITH] 9 = BLOWING SNOW. Waral dи,
X = TORNADO
MAX 32 OR BELOW: 0 0.01 INCH OR MORE: 23
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 12
MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 4
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 1
[HDD (BASE 65) ]
TOTAL THIS MO. 552 CLEAR (SCALE 0-3) 0
DPTR FM NORMAL -195 PTCLDY (SCALE 4-7) 9. 1point3acres
TOTAL FM JUL 1 2483 CLOUDY (SCALE 8-10) 22-baidu 1point3acres
DPTR FM NORMAL -231
. 1point 3 acres
[CDD (BASE 65) ]
TOTAL THIS MO. 0
DPTR FM NORMAL 0 [PRESSURE DATA]
TOTAL FM JAN 1 0 HIGHEST SLP M ON M.1point3acres
DPTR FM NORMAL 0 LOWEST SLP 28.98 ON M
[REMARKS]
#FINAL-01-10#
Feb. 2010
WFO Monthly/Daily Climate Data
000
CXUS55 KSEW 010945
CF6SEA
. ----
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: SEATTLE-TACOMA WA AIRPORT
MONTH: FEBRUARY
YEAR: 2010
LATITUDE: 47 27 N
LONGITUDE: 122 18 W. From 1point 3acres bbs
TEMPERATURE IN F: :PCPN: SNOW: WIND :SUNSHINE: SKY :PK WND. Χ
================================================================================
1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17 18.1point3acres
12Z AVG MX 2MIN. Waral dи,
DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR. 1point 3acres
================================================================================
1 49 40 45 3 20 0 0.08 0.0 0 2.9 9 120 M M 9 1 13 130
2 54 40 47 5 18 0 0.01 0.0 0 5.6 12 110 M M 8 1 17 130
3 50 41 46 4 19 0 0.31 0.0 0 4.6 10 90 M M 9 1 14 100
4 57 41 49 7 16 0 0.08 0.0 0 10.4 22 120 M M 9 28 120
5 58 45 52 10 13 0 0.07 0.0 0 8.2 16 100 M M 6 20 100
6 56 43 50 7 15 0 0.13 0.0 0 5.2 14 100 M M 8 18 18 100
7 49 44 47 4 18 0 0.15 0.0 0 4.5 8 190 M M 10 1 10 190
8 49 41 45 2 20 0 0.00 0.0 0 3.8 9 10 M M 8 1 12 290
9 46 36 41 -2 24 0 0.00 0.0 0 3.6 8 30 M M 6 128 9 260
10 44 31 38 -5 27 0 0.11 0.0 0 4.3 10 150 M M 9 12 18 100
11 54 43 49 6 16 0 0.24 0.0 0 8.5 22 180 M M 10 1 30 160. .и
12 54 43 49 6 16 0 0.38 0.0 0 11.9 26 220 M M 9 1 37 230
13 52 45 49 6 16 0 0.20 0.0 0 8.1 16 110 M M 9 20 120
14 53 42 48 5 17 0 0.42 0.0 0 6.7 17 140 M M 9 1 22 150
15 55 37 46 3 19 0 0.07 0.0 0 4.4 14 130 M M 7 17 140
16 54 43 49 6 16 0 0.21 0.0 0 10.2 21 30 M M 6 25 30
17 51 39 45 1 20 0 0.00 0.0 0 15.3 24 10 M M 3 18 28 30-baidu 1point3acres
18 59 39 49 5 16 0 0.00 0.0 0 14.9 21 10 M M 2 24 30
19 59 39 49 5 16 0 0.00 0.0 0 9.7 16 20 M M 1 18 30
20 57 35 46 2 19 0 0.00 0.0 0 6.9 13 110 M M 0 17 100
21 57 36 47 3 18 0 0.00 0.0 0 6.4 18 120 M M 0 25 130
22 54 33 44 0 21 0 0.00 0.0 0 5.0 13 130 M M 3 15 130
23 48 37 43 -1 22 0 0.16 0.0 0 3.9 13 210 M M 9 1 15 120
24 51 42 47 3 18 0 0.33 0.0 0 9.3 20 220 M M 8 1 26 210
25 54 44 49 5 16 0 0.05 0.0 0 7.9 16 170 M M 8 1 21 180. .и
26 52 46 49 5 16 0 0.44 0.0 0 9.4 21 110 M M 10 1 25 120. .и
27 54 46 50 6 15 0 0.08 0.0 0 6.9 14 240 M M 9 18 240
28 56 43 50 5 15 0 0.00 0.0 0 3.0 8 270 M M 8 12 200
================================================================================-baidu 1point3acres
SM 1486 1134 502 0 3.52 0.0 201.5 M 193
================================================================================
AV 53.1 40.5 7.2 FASTST M M 7 MAX(MPH)
MISC ----> # 26 220 # 37 230
================================================================================. 1point 3acres
NOTES:
# LAST OF SEVERAL OCCURRENCES. From 1point 3acres bbs
COLUMN 17 PEAK WIND IN M.P.H.
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2
STATION: SEATTLE-TACOMA WA AIRPORT. 1point3acres.com
MONTH: FEBRUARY
YEAR: 2010
LATITUDE: 47 27 N
LONGITUDE: 122 18 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 46.8 TOTAL FOR MONTH: 3.52 1 = FOG OR MIST
DPTR FM NORMAL: 3.5 DPTR FM NORMAL: -0.66 2 = FOG REDUCING VISIBILITY
HIGHEST: 59 ON 19,18 GRTST 24HR 0.62 ON 13-14 TO 1/4 MILE OR LESS
LOWEST: 31 ON 10 3 = THUNDER
SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS
TOTAL MONTH: 0.0 INCH 5 = HAIL
GRTST 24HR 0.0 6 = FREEZING RAIN OR DRIZZLE
GRTST DEPTH: 0 7 = DUSTSTORM OR SANDSTORM:
VSBY 1/2 MILE OR LESS
8 = SMOKE OR HAZE. 1point3acres.com
[NO. OF DAYS WITH] [WEATHER - DAYS WITH] 9 = BLOWING SNOW
X = TORNADO
MAX 32 OR BELOW: 0 0.01 INCH OR MORE: 19
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 12
MIN 32 OR BELOW: 1 0.50 INCH OR MORE: 0. Χ
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0
[HDD (BASE 65) ]
. check 1point3acres for more.TOTAL THIS MO. 502 CLEAR (SCALE 0-3) 5
.1point3acresDPTR FM NORMAL -111 PTCLDY (SCALE 4-7) 10
TOTAL FM JUL 1 2985 CLOUDY (SCALE 8-10) 13
DPTR FM NORMAL -342. check 1point3acres for more.
[CDD (BASE 65) ]
TOTAL THIS MO. 0
DPTR FM NORMAL 0 [PRESSURE DATA]. 1point3acres.com
TOTAL FM JAN 1 0 HIGHEST SLP M ON M
DPTR FM NORMAL 0 LOWEST SLP 29.50 ON M
[REMARKS]
#FINAL-02-10# |
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