March, 2009 Climate
◇ National Mean temperature is 1.5℃ higher than normal, making it the fourth highest record since 1973.
Precipitation for the national average is 98% relative to normal.
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Climate characteristics of March 2009, and their long-term trends are
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analyzed based on 60 Korean meteorological stations (national average) for the period 1973-2009 (1908-2009 in Seoul).
March, 2009 climate is as follows:
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o For the national average,
- the mean temperature (7.1 ) is 1.5℃ ℃ higher than normal, making it the fourth highest record since 1973.
- the mean maximum temperature (12.8 ) is 1.3℃ ℃ higher than normal.
- the mean minimum (1.5 ) temperature is 1.1℃ ℃ higher than normal.
- the amount of precipitation (59.8mm) is 97.7% relative to normal.
- the average rainy days (8.8 days) are 0.8 day greater than normal.
- the average precipitation intensity (amount of precipitation/rainy days) (6.8mm/day) is reduced 0.9mm/day compare to that of the normal.
- the average duration of sunshine (193.8 hours) is 12.3 hours shorter than normal.
- days with daily minimum temperature below 0℃ (12.4 days) are 1.2 days greater than normal.
- the number of asian dust days (2.2 days) is 1.5 days greater than normal.
KMA'S BRIEFING IN
CLIMATE CHARACTERISTICS
(total 6 pages)
o For Seoul,
- the mean (6.0 ), mean maximum (10.6 ), and mean minimum (1.8 )℃ ℃ ℃ temperatures are 0.8 , 0.4 , and 0.7℃ ℃ ℃ higher than normal, respectively.
- the amount of precipitation (63.9mm) is 140% relative to normal.
- the average rainy days (8.0 days) are 2.0 days greater than normal.
- the number of asian dust days (3.0 days) is 2.3 days greater than normal.
For the national average, mean temperature of March 2000s is 1.2 , 0.9 ,
□ ℃ ℃
and 0.5℃ higher than during the March of 1970s, 1980s, and 1990s respectively.
Normal: average from 1971 to 2000.
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National average is used average values of 60 meteorological stations starting from 1973.
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In Seoul, data are analyzed from 1909.
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1910s: average from 1911 to 1920
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1970s: average from 1973 to 1980
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2000s: average from 2001 to 2009
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Appendix
Fig. 1. Time series of March temperatures (mean, mean maximum, and mean minimum), and precipitation across the South Korea for the period 1973-2009.
T e m p e r a t u r e a n d p r e c ip it a t io n o f M a r c h ( 1 9 7 3 ~ 2 0 0 9 )
0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0
1 9 7 3 1 9 7 8 1 9 8 3 1 9 8 8 1 9 9 3 1 9 9 8 2 0 0 3 2 0 0 8
Precipitation(mm)
- 4 - 2 0 2 4 6 8 1 0 1 2 1 4 1 6
Temperature(℃)
P re c ipita tio n M e a n t M e a n M a x . t M e a n M in i. t
Fig. 2. Time series of March temperatures (mean, mean maximum, and mean minimum), and precipitation in Seoul for the period
1908-2009.
T e mp e ra t u re a n d p re c ipit a t io n o f M a r c h ( 1908~ 2009)
0 50 100 150 200 250
1908 1913 1918 1923 1928 1933 1938 1943 1948 1953 1958 1963 1968 1973 1978 1983 1988 1993 1998 2003 2008
Precipitation(mm)
-6 -4 -2 0 2 4 6 8 10 12 14
Temperature(℃)
Precipitation M ean t M ean M ax. t M ean M ini. t 선 형 (Precipitation)
Fig. 3. National March temperature, precipitation, precipitation intensity, and asian dust days in each decade.
M a r c h M e a n T e mp e r a t u r e ( 1973-2009)
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0
1973-1980 1981-1990 1991-2000 2001-2009
Temperature(℃)
M a r c h P r e c ip it a t io n ( 1973-2009)
0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0
1973-1980 1981-1990 1991-2000 2001-2009
Precipitation(mm)
M a r c h P r e c ip it a t io n In t e n s it y ( mm/ da y )
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0
19 73 -1 98 0 19 81 -1 99 0 1 991 -2 00 0 2 001 -200 9
mm/day
M a r c h A s ia n Du s t Da y s ( 1973-2009)
0 .0 0 .5 1 .0 1 .5 2 .0 2 .5 3 .0 3 .5 4 .0
1 9 7 3 -1 9 8 0 1 9 8 1 -1 9 9 0 1 9 9 1 -2 0 0 0 2 0 0 1 -2 0 0 9
days
Table 1. National average values of March meteorological elements (1973-2009)
Table 3. National average values of March meteorological elements in each decade (1973-2009)
Table 4. March meteorological elements in Seoul in each decade (1973-2009)
