Space Weather Operations and Research
Activities at the IGGCASXiukuan Zhao, Baiqi Ning, Guozhu Li
Institute of Geology and Geophysics, CAS
Mar. 2nd, 2015

Outline
1. Observation Chain
2. Developed Instruments
3. CAS Cooperation
4. International Cooperation
5. ModelsObservation Chain of IGGCAS
Data Center in IGGCASFour stations in a chain
along 120°E meridian

Beijing Station（40.3ºN ， 116.2ºE ）Mohe Station（53.5ºN 122.3ºE）

Sanya Station（18.3ºN 109.6ºE）

Wuhan Station（31.0ºN,114.5ºE）
Zhongshan Station(69.4ºS 76.4ºE )Yellow River Station(78.9ºN 11.9ºE )3Observation Instruments

 Magnetometer ( 4 x 6+6=30 set ) Meteor Radar ( 4 set ) Ionosonde ( 4+2 set ) GPS TEC and Scintillation ( 8 set ) VHF Radar ( 1 set ) Atmospheric electric field mill ( 1 set )4

Ionosonde Chain of IGGCAS

Beijing (40.3ºN，116.2ºE )DPS4D since Dec. 2009

Sanya (18.3ºN，109.6ºE)
DPS4D since May 2011

Mohe (53.5ºN，122.3ºE)
DPS4D since Sep. 2010

Four stations in a chain
along 120°E meridian are
equipped with DPS4D
digisondes

Wuhan (31.0ºN，114.5ºE)
Vertical sonding since 1946
DPS4D since Apr. 2010

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IGGCAS meteor radar chain (all sky meteor radar)Mohe(MH)(53.5°N, 122.3°E)
2011 –Beijing(BJ)(40.3°N, 116.2°E)
2002 –Wuhan(WH)(31.0°N, 114.5°E)
2002 - 2004, 2010 –Sanya(SY)(18.3°N, 109.6°E)
2009 -6

IGGCAS meteor radar chain (all sky meteor radar) Observables:
u: zonal wind
v: meridional wind
 Altitude range:
70 – 110 km
 Altitude resolution:
2 km
 Time resolution:
1 hr
 Suitable for study tides
in MLT region
7IGGCAS meteor radar chain (wind observation)
 Sample observations:(a)(2012.11.21-2012.11.28)

 Period
1, 1/2 , 1/3…, day Latitude variation
diurnal (semidiurnal)
variation dominates atlow (mid)-latitudestations(b) Altitude variation
peak in MLT region Day-to-day variability
8GPS & Magnetometer Chain of IGGCAS• GPS TEC and Scintillation– Yellow River since 2007
– Mohe since 2006
– Beijing since 2004
– Wuhan since 2001
– Sanya since 2004
– Zhongshan since 2012

• Magnetometer– Mohe since 2000
– Beijing since 2000– Sanya since 2006
– Zhongshan since 20109

http://space.iggcas.ac.cn

10Outline
1. Observation Chain
2. Developed Instruments
3. CAS Cooperation
4. International Cooperation
5. ModelsPortable Digital Ionosonde (PDI)• Sending antenna 4m*27m• Receiving antenna 3m*27m• Shaoyang (111.5E，26.9N)
since 201212

Multiple GNSS Receiver
GLONASS

BeidouGPSTEC

Ionosphere

BG2 Receiver13初步观测结果
GPS

Beidou 1# geostationary satellite

Beidou 2# geostationary satellite图 4 2014年5月1日至7日BG2接收机在北京地区通过北斗GEO卫星获取的电离层垂直TEC的分布

Day-to-day variability
Beidou 3# geostationary satellite

Beidou 4# geostationary satellite

TEC in May 1-7, 2014 at Beijing Station14

VHF Radar in Sanya• Ionosphere coherent– irregular structure of ionosphere• All sky meteor radar– wind observation15

Outline
1. Observation Chain
2. Developed Instruments
3. CAS Cooperation
4. International Cooperation
5. ModelsSolar-Terrestrial Environment Research
Network（STERN）（10 stations + 1 data center）

MoheBeijing
XiangheLangfang

Yangbajing

Mengcheng
Jiufeng
Wuhan

FukeSanya17

Outline
1. Observation Chain
2. Developed Instruments
3. CAS Cooperation
4. International Cooperation
5. ModelsMadrigal database• The Madrigal database stores data from a widevariety of upper atmosphere research instruments• Number of instruments in Madrigal (summer 2013):– Incoherent scatter radars: 22– MST radars: 3– MF radars: 16– Meteor radars: 7Incoherent Scatter Radar TEC via GPS– FPI: 23– Michelson Interferometers: 6– Lidars: 4– Photometers: 4MF Radar

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Mirror site of Madrigal

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Mirror site of GIRO
IGGCAS mirror site
Publicdata exchange

PublicInternetInternet

DPS4D
MoheDPS4D
Beijing

DPS4D
Wuhan

DPS4DSanya

Four digisondes of IGGCAS send data to UMLCAR
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Real-time DPS4D data in IRTAM from IGGCASMoheBeijingWuhan
Sanya

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Outline
1. Observation Chain
2. Developed Instruments
3. CAS Cooperation
4. International Cooperation
5. ModelsPrediction model of short-term ionospheric foF2

Adaboost-BP

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Prediction model of short-term ionospheric foF2
The contribution of input parameters

Comparison of different methods forWakkanai data versus F107 values

The initial parameters are HRS,HRC, DNS, DNC and F10725

 120°E meridional chain
four meteor radars atMohe(MH), Beijign(BJ),Wuhan(WH), Sanya(SY) 3D distribution of winds
longitude: 120°E
latitude: 15-55°N
altitude: 80-100 km
local time: 0-23 LT

? 40°N zonal chain
Need wind observations
from the stations around 40°N
to extract the nonmigrating tidal component? 120°E meridional chain
Need wind observations
from the stations (especially inthe S. Hemisphere) along the120°E meridian
to decompose the tidal
modes in both Hemispheres

Dr. Xiukuan Zhao (Kevin)zxk@mail.iggcas.ac.cn