Observations for the Polar Upper Atmosphere Research at Korea Polar - - PowerPoint PPT Presentation

▶
observations for the polar upper atmosphere research at
SMART_READER_LITE
LIVE PREVIEW

Observations for the Polar Upper Atmosphere Research at Korea Polar - - PowerPoint PPT Presentation

Apr 15, 2023 116 likes •370 views

Observations for the Polar Upper Atmosphere Research at Korea Polar Research Institute (KOPRI) Jeong-Han Kim , Geonhwa Jee, Changsup Lee Korea Polar Research Institute 4th International ANGWIN Workshop, 24-26 April, 2018, INPE, Brasil

slide-1
SLIDE 1

Observations for the Polar Upper Atmosphere Research at Korea Polar Research Institute (KOPRI)

Jeong-Han Kim, Geonhwa Jee, Changsup Lee Korea Polar Research Institute

4th International ANGWIN Workshop, 24-26 April, 2018, INPE, Brasil

slide-2
SLIDE 2

Observation sites in the Polar Region

Geomagnetic North Pole Dasan Station (& KHO)

78° 55' N, 11° 56' E

King Sejong Station (KSS)

62° 13' S, 58° 47' W

Jang Bogo Station (JBS)

74º 37' S, 164º 13' E

Kiruna (Esrange)

67° 51' N, 20° 13' E

Geomagnetic South Pole

slide-3
SLIDE 3

Observations in the Arctic

Dasan Station

78° 55' N, 11° 56' E

Esrange

67° 51' N, 20° 13' E

GPS FTS FPI FTS GPS FPI ASC EISCAT

(KHO, Longyearbyen)

slide-4
SLIDE 4

Observations in the Arctic

Dasan Station

78° 55' N, 11° 56' E

Kiruna

67° 51' N, 20° 13' E

GPS FTS FPI FTS GPS FPI ASC EISCAT

(KHO, Longyearbyen)

  • Airglow emission from OH Meinel band
  • Mesopause temperature at ~87 km
  • Since 2003 for Dasan & 2002 for Esrange

FTS

(Fourier Transform Spectrometer)

slide-5
SLIDE 5

Observations in the Arctic

Dasan Station

78° 55' N, 11° 56' E

Kiruna

67° 51' N, 20° 13' E

GPS FTS FPI FTS GPS FPI ASC EISCAT

(KHO, Longyearbyen)

  • Filters : 630.0 nm (OI), 732.0 nm (O+)
  • Simultaneous observations of neutral wind &

ion drift in the thermosphere

  • Since 2015.10 for Dasan & 2016.10 for Esrange

FPI

slide-6
SLIDE 6

Observations in the Arctic

Dasan Station

78° 55' N, 11° 56' E

Kiruna

67° 51' N, 20° 13' E

GPS FTS FPI FTS GPS FPI ASC EISCAT

(KHO, Longyearbyen)

  • TEC, Signal amplitude & Phase scintillation index

(1Hz & 100Hz)

  • Continuous monitoring of ionospheric irregularity
  • Since 2015.10 for Dasan, 2014.09 for Kiruna,

2015.02 for KSS, 2015.12 for JBS

GPSTEC scintillation monitor

slide-7
SLIDE 7

Observations in the Arctic

Dasan Station

78° 55' N, 11° 56' E

Kiruna

67° 51' N, 20° 13' E

GPS FTS FPI FTS GPS FPI ASC EISCAT

(KHO, Longyearbyen)

  • Filter : H alpha (656.3 nm)
  • Observation of proton aurora near MLT noon
  • Since 2016.12

ASC for proton aurora

slide-8
SLIDE 8

Observations in Antarctica

King Sejong Station (KSS)

62° 13' S, 58° 47' W

Jang Bogo Station (JBS)

74º 37' S, 164º 13' E

GPS NM FPI VIPIR MM

(Search coil & Flux gate)

SATI MR ASC GPS FPI MM

(Search coil)

ASC ASC ASC

slide-9
SLIDE 9

Observations in Antarctica - KSS

King Sejong Station (KSS)

62° 13' S, 58° 47' W

Jang Bogo Station (JBS)

74º 37' S, 164º 13' E

GPS NM FPI VIPIR MM

(Search coil & Flux gate)

ASC GPS FPI MM

(Search coil)

SATI MR ASC ASC ASC

  • OH(~87km) & O2(~94km) rotational T.
  • Period : 2002.3 ~ 2016.8 (during winter)
  • Wind (80~100km altitude) & T. at 91km
  • Since 2007.02 ~

: Power upgrade in 2012.02 (8kW=>12kW)

SATI

(Spectral Airglow T emperature Imager)

Meteor Radar

slide-10
SLIDE 10

Observations in Antarctica - KSS

King Sejong Station (KSS)

62° 13' S, 58° 47' W

Jang Bogo Station (JBS)

74º 37' S, 164º 13' E

GPS NM FPI VIPIR MM

(Search coil & Flux gate)

SATI MR ASC GPS FPI MM

(Search coil)

ASC ASC ASC

  • Filters : OI (557.7 & 630.0nm), OH Meinel
  • Since 2008.3 ~ (during winter)
  • Presentation by Hosik Kam
  • Wind & Temperature near 87, 97 & 250

km

  • Moved from Palmer Station to KSS in
  • Feb. 2017.
  • Presentation by Geonhwa Jee

ASC FPI

slide-11
SLIDE 11

Observations in Antarctica - JBS

King Sejong Station (KSS)

62° 13' S, 58° 47' W

Jang Bogo Station (JBS)

74º 37' S, 164º 13' E

GPS NM FPI VIPIR MM

(Search coil & Flux gate)

SATI MR ASC GPS FPI MM

(Search coil)

  • ASC for airglow emission (by KASI)
  • Filters : OI 557.7 & 630.0 nm
  • Installed in 2016.12
  • ASC for proton aurora
  • Identical with that in KHO (656.3nm)
  • Installed in 2016.12
  • ASC for electron aurora
  • Continuous observation of the aurora

during nighttime

  • Installed in 2017.12

Three ASCs

slide-12
SLIDE 12

Observations in Antarctica - JBS

slide-13
SLIDE 13

Observations in Antarctica - JBS

slide-14
SLIDE 14

Observations in Antarctica - JBS

slide-15
SLIDE 15

Observations in Antarctica - JBS

slide-16
SLIDE 16

Observations in Antarctica - JBS

King Sejong Station (KSS)

62° 13' S, 58° 47' W

Jang Bogo Station (JBS)

74º 37' S, 164º 13' E

GPS FPI VIPIR SATI MR ASC GPS FPI MM

(Search coil)

ASC ASC ASC

  • Continuous monitoring of

geomagnetic field variation for two horizontal components

  • Since 2016.12 ~
  • Continuous measurement of

incoming cosmic rays

  • Complete installation in 2018.02

Magnetometer Neutron Monitor

MM

(Search coil & Flux gate)

NM

slide-17
SLIDE 17

Fabry-Perot Interferometer (FPI)

Geomagnetic North Pole Dasan Station

78° 55' N, 11° 56' E

King Sejong Station (KSS)

62° 13' S, 58° 47' W

Jang Bogo Station (JBS)

74º 37' S, 164º 13' E

Kiruna

67° 51' N, 20° 13' E

Geomagnetic South Pole

JBS KSS

  • JBS-FPI - operated since

2014.02

  • Meaure OH and O

airglow emissions (87, 97, 250 km)

  • Produce neutral winds

and temperatures in the polar cap region

slide-18
SLIDE 18

Zonal

  • 500
  • 250

250 500 Wind velocity (ms-1)

Meridional

  • 500
  • 250

250 500 Wind at 250 km

  • 100
  • 50

50 100 Wind velocity (ms-1)

  • 100
  • 50

50 100 Wind at 97 km

  • 100
  • 50

50 100 Wind velocity (ms-1) 6 12 18 24 Local time (hr)

  • 100
  • 50

50 100 Wind at 87 km 6 12 18 24 Local time (hr)

2014 2015 2014 2015

Fabry-Perot Interferometer (FPI)

Mar Apr May Jun Jul Aug Sep Oct 2014 300 600 900 1200 1500 Temperature (K) T250km T87km TMLS87km 100 300 500 Temperature (K) 25 50 75 100 Kp

(a)

Mar Apr May Jun Jul Aug Sep Oct 2015 300 600 900 1200 1500 Temperature (K) T250km T87km TMLS87km 100 300 500 Temperature (K) 25 50 75 100 Kp

(b)

2014 2015 Lee et al., 2017, Polar thermosphere winds and temperature observed by Fabry- Perot Interferometer at Jang Bogo Station, Antarctica. JGR-Space Physics

Wind T emperature

slide-19
SLIDE 19

Vertical Incidence Pulsed Ionospheric Radar (VIPIR)

Geomagnetic North Pole Dasan Station

78° 55' N, 11° 56' E

King Sejong Station (KSS)

62° 13' S, 58° 47' W

Jang Bogo Station (JBS)

74º 37' S, 164º 13' E

Kiruna

67° 51' N, 20° 13' E

Geomagnetic South Pole

  • Installed in 2015.02 in collaboration with Univ. of Colorado
  • Provids electron density profile, ion drift, and ionospheric tilt
  • Normal operation from last year (2017) after two-year test
  • bservation
slide-20
SLIDE 20

Vertical Incidence Pulsed Ionospheric Radar (VIPIR)

SWO

Transmitter Receiver

~200m ~100m

slide-21
SLIDE 21

VIPIR - Plasma density

MLT noon MLT noon MLT noon MLT noon

slide-22
SLIDE 22

VIPIR - Tilts: horizontal density gradient

Results from NeXtYZ. 2017. 01. 17 ~ 2017. 01. 31

6 12 18 24 UT [Hours] 100 200 300 400 Altitude [km] 1 2 3 4 5 6 7 Plasma Frequency [MHz] 6 12 18 24 UT [Hours] 100 200 300 400 Altitude [km]

  • 30
  • 20
  • 10

10 20 30 E-W tilt [degree] 6 12 18 24 UT [Hours] 100 200 300 400 Altitude [km]

  • 30
  • 20
  • 10

10 20 30 N-S tilt [degree]

Results from NeXtYZ. 2017. 04. 01 ~ 2017. 04. 23

6 12 18 24 UT [Hours] 100 200 300 400 Altitude [km] 1 2 3 4 5 6 7 Plasma Frequency [MHz] 6 12 18 24 UT [Hours] 100 200 300 400 Altitude [km]

  • 30
  • 20
  • 10

10 20 30 E-W tilt [degree] 6 12 18 24 UT [Hours] 100 200 300 400 Altitude [km]

  • 30
  • 20
  • 10

10 20 30 N-S tilt [degree]

slide-23
SLIDE 23

Korean 3rd Antarctic Inland Station

King Sejong Station (KSS)

62° 13' S, 58° 47' W

Jang Bogo Station (JBS)

74º 37' S, 164º 13' E

Inland station

slide-24
SLIDE 24

Thank you for your attention!