Thirty years of meteorological data observed at the Korean Antarctic King
Sejong station
12th Workshop on Antarctic Meteorology and Climate
26 June, 2017
Sang-Jong Park, Tae-Jin Choi, Bang-Yong Lee, Seong-Joong Kim
Korea Polar Research Institute
King Sejong Station (KSJ, WMO #89251)
Map from Oliva et al. 2016
- Since Feb. 1988 (30 yrs by 2018) (King George Island, 62° 13' S, 58 ° 47' W)
King Sejong Station (KSJ, WMO #89251)
- 17 members in over-wintering team (one from KMA for observation & forecast) - app. 100 summertime researchers
- new research building in 16/17 & 17/18
Meteorological Measurements at KSJ
• Automatic Meteorological Observation System: - Wind speed / direction (10 m) - Temperature, humidity (1.5 m) - Precipitation (1.5 m) - Atmospheric pressure (1.5 m) • Radiation: - Shortwave - Longwave - Total UV, UV-Biometer, UV-A meter • Flux System (mtm, energy, CO2 fluxes): - 3-D Sonic anemometer and IRGA - Net radiometer - Temperature, humidity
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
2.0
4.0
1 2 3 4 5 6 7 8 9 10 11 12
Tem
per
atur
e (°C)
Month
KSJ
Thirty years of meteorological data at KSJ (air T)
Climatological air temperature (oC) during 1988-2016
Mean Annual Air Temperature: -1.8 oC Min.: -25.6 oC (1994.7.24) Max: +13.2 oC (2004.1.24)
Thirty years of meteorological data at KSJ (Wind Speed)
4.0
5.0
6.0
7.0
8.0
9.0
10.0
1 2 3 4 5 6 7 8 9 10 11 12
Win
d s
pee
d (m
/s)
Month
KSJ
Climatological wind speed (m/s)
Mean Annual Wind Speed: 8.0 m/s Max: 51.9 m/s (2015.7.1)
Mean Annual Blizzard Occurrence: 23.1 times 274.7 hrs (~ 11.9 hrs/occ)
Thirty years of meteorological data at KSJ (Pressure)
Climatological Atmospheric Pressure (hPa)
980.0
982.0
984.0
986.0
988.0
990.0
992.0
994.0
1 2 3 4 5 6 7 8 9 10 11 12
Atm
osp
her
ic P
ress
ure
(hPa
)
Month
Mean Annual Atmo. Pressure: 988.9 hPa Min.: 929 hPa (2015.8.16) Max: 1035 hPa (2000.9.7)
Thirty years of meteorological data at KSJ (Prcp)
Climatological Precipitation (mm) during 1988-2016
0.0
10.0
20.0
30.0
40.0
50.0
60.0
1 2 3 4 5 6 7 8 9 10 11 12
Prec
ipitat
ion
(mm
)
Month
KSJ
Mean Annual Total Precipitation: 520.2 mm
Thirty years of meteorological data at KSJ (air T)
y = -2E-05x - 0.96
-15
-10
-5
0
5
1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018
Tem
per
atur
e (°C)
Year
Monthly mean air temperature from 1988. Feb to 2017 May
Very weak cooling trend: -0.0002 oC/decade
y = 6E-06x + 7.7297
0.0
2.0
4.0
6.0
8.0
10.0
12.0
1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018
Win
d s
pee
d (m
/s)
Year
KSJ
Thirty years of meteorological data at KSJ (Wind Speed)
Thirty years of meteorological data at KSJ (Precipitation)
y = 0.0018x - 25.599
-20.0
30.0
80.0
130.0
180.0
1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016
Prec
ipitat
ion
(mm
)
Year
Seasonal airT change (2006-2015 vs 1996-2005)
From Oliva et al. (2016, Sci. of Total Environment)
In 2017.
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
2.0
4.0
1 2 3 4 5 6 7 8 9 10 11 12
Tem
per
atur
e (°C)
Month
KSJ 2017_KSJ
In 2017.
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
2.0
4.0
1 2 3 4 5 6 7 8 9 10 11 12
Tem
per
atur
e (°C)
Month
KSJ 2017_KSJ
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
1 2 3 4 5 6 7 8 9 10 11 12
Win
d s
pee
d (m
/s)
Month
KSJ 2017_KSJ
In 2017.
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
2.0
4.0
1 2 3 4 5 6 7 8 9 10 11 12
Tem
per
atur
e (°C)
Month
KSJ 2017_KSJ
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
1 2 3 4 5 6 7 8 9 10 11 12
Win
d s
pee
d (m
/s)
Month
KSJ 2017_KSJ
0.0
20.0
40.0
60.0
80.0
100.0
120.0
1 2 3 4 5 6 7 8 9 10 11 12
Prec
ipitat
ion
(mm
)
Month
KSJ
2017_KSJ
To-do list in 2017
• Consistent 1988-2016 data QC considering maintenance report etc.
• GTS path change: KSJ-Frei-WMO → KSJ-KMA-WMO in BUFR (2017) • Preparation of radiosonde launch for YOPP-SH
• Gap-filling with help of other stations (i.e. Bellingshausen) • Dual AWS setup
