1. IPC-XII Symposium, Sep28-Oct16, 2015
Solar Radiation measurement in China
An overview
Ding Lei
China Meteorological Administration ( CMA)
IPC-XII Symposium, Sep28-Oct16, 2015

2. National Radiation Network in China
Outline
National Radiation Network in China
Calibration

3. National Radiation Network in China (since 1957)
Motivation:
Climate change
Solar energy resources
10 stations’ data (global, diffuse, sunshine duration) transmitted to WRDC every half a year.
Type of station
GHI
DHI
DNI
RSW
NET
First class (17) √
Second class (33)
Third class (48)
RSW: Reflected shortwave radiation;
Pyranometer & Pyrheliometer:
ISO 9060 second class

4. Additional Radiation Network —— GAW stations
Shangdianzi
Longfengshan
Waliguan
Linan
Network
Location
Parameter
GHI
ventilation
Reflected
Irradiance
DNI
DHI
DLW
ULW UV
PAR
Tracker
GAW Station
(4 sites)
ShangDianZi
PSP
NIP
8-48
PIR
UVS-B-T /
SWT
LinAn
CMP21
CHP1
CG4
Brewer
2AP
LongFengShan
WaLiGuan
(Global)

5. Baseline Radiation Station
Additional Radiation Network — National Baseline Radiation Stations (since 2007)
High quality instruments
Froced ventilation to induce the thermal offset
Sun tracker
Network
Location
Parameter
GHI
ventilation
Reflected
Irradiance
DNI
DHI
DLW
ULW UV
PAR
Tracker
Baseline Radiation Station
(7 sites)
XiLinHaoTe
CMP22
CMP21
CHP1
CGR4
UVS-AB-T
2AP
ShangDianZi、MoHe、Xu
Chang、WenJiang、DaLi、YanQi
CMP11
IR02
Li-cor
FS-ST22

6. National Baseline Radiation Station — Xilinhaote (since 2007)
Reflected irradiance, 10 m

7. National Center for Meteorological Metrology (NCMM)
Beijing, China
Established since 1950s
Calibration Laboratory of Solar and Terrestrial Radiation
Mission:
Maintains the national standard group
Trace to IPC or RPC every 5 years
NSG intercomparison once a year
Transfers to 7 provincial meteorological metrology agencies nationwide
National comparison (NPC) once every 2 years
Calibration service
Calibration interval : 1~2 years

8. Annual internal pyrheliometer Comparison to ensure the consistency with WRR

9. National Center for Meteorological Metrology (NCMM)
Beijing, China
Established since 1950s
Calibration Laboratory of Solar and Terrestrial Radiation
On the roof
Lijiang, Yunnan Province
Gucheng
,Hebei Province
Calibration Outfields

10. National Pyrheliometer Comparison(NPC) once every 2 years in China
10 days duration or at least 4 sunny days
Last NPC was held from Nov.27 to Dec at Lijiang, Yunnan.

11. National Pyrheliometer Comparison(NPC) once every 2 years in China

12. Trace to NSG Once every 1 year
Diffuse Radiation Standard Group Three PSP before Four CMP22 Pyranometer after 2006
Trace to NSG
Once every 1 year

13. Long-wave Standard Group Two CG4 and one PIR pyrgeometer
CG4 pyrgeometer trace to WISG
since 2005

14. Solar simulator for Performance test
Test indoors:
Directional response
Non-linearity
Tilt response
Temperature response

15. Thank you for your attention!