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Thirty years of meteorological data observed at the Korean Antarctic King Sejong station 12 th 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
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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

Thanks for your attention

[email protected]


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