1. Radiation measurements in Estonia
Kristjan Nurmela, Ain Kallis
Davos 2015

2. Estonia

3. Estonia parameters: Latitude and Longitude 59° 00' N, 26° 00' E
Population 1.3M (69.1% Estonians, 25.2% Russians)
Area km2
Maximum height: 317 (m.a.s.l)
Coldes: °C 17th of January 1940
Hottest: 35.6 °C 11th of August 1992
Common temp. range : -10 to +20 °C

4. Estonia in IPC events
PMO
Ain Kallis IPCs (5)

5. Actinometric network in Estonia
8x global radiation
5x UVE
13x sunshine duratation
Narva
Tallinn
Jõhvi
Nigula
Haapsalu
Kuusiku
Ristna
Tiirikoja
Jõgeva
Vilsandi
Pärnu
Viljandi
Tõravere
Roomassaare
Sõrve
Võru
Longer time series of radiation measurements have been obtained from Tartu-Tõravere (since 1950) and Tiirikoja near Lake Peipsi (since 1956).

6. Tartu-Tõravere BSRN station radiation sensors:
Solar Light Microtops II
direct irradiance
photosynthetically active radiation, direct and global
UVS-e-t
Eppley NIP
global, diffuse, reflected irradiance
CUVB 1
downward longwave irradiance
LI-COR 190SA
LI-COR 190SA
upward longwave irradiance
total ozone measurements
Janiševski AT-50
CGR 4 + CVF 4
CUV 3
UV erythemal radiation
Eppley PIR
net radiation
CM-21 + CVF 3
UVA + UVB
GB-1 J. Reemann (1965- )
CM-21 + CV 2
CMP-21
CVF 4
306 nm UVB
BSRN- Baseline Surface Radiation Network
Tartu-Tõravere Station became a BSRN candidate in 1993, since 1999 it has operated as a BSRN station. It belongs to the Estonian Environment Agency (former Estonian Meteorological and Hydrological Institute)
CHP 1

7. Data acquisition in Tõravere station
Avg of 10 per min.
CR10X
New data every 5 min PC
Engeneer 1st look on data
(every workday)
Calculation of values for instruments
(PAS,XLS)
Data sending to databases
Once a month
(our own,BSRN)

8. New Instruments since 2010:
Kipp&Zonen 2AP sun tracker
PFR for AOD (atm on repair & cal)
1/3 on the way to full automatisation using Vaisala MAWS stations (troubleshooting)

9. Calibrations PMO6 NIP AT-50 Tõravere pyranameters Backup AT-50’s
Other st. pyranometers
CHP 1

10. 7th of June 2015
(sunny sunday)

12. Future plans: Vaisala Observation Network Manager
Connecting all Tõravere station radiation instruments to Vaisala MAWS system
Start calibrating all our instruments more regularly
Replace J. Reemann GB-1 net radiation with pyranometers and pyrgeometers calculation.

13. Thank you for your attention
Kristjan Nurmela
Agent 007