GÄVLE, SWEDEN

Contacts:
Hans Allan Löfberg
Royal Institute of Technology
Department of Built Environment
Box 88 S-801-02 Gävle, Sweden
Tel : (46) 26 14 78 00
Fax : (46) 26 14 78 01
E-mail : lofberg@bmg.kth.se
Server :
Station Location:
Gävle, Sweden.
Latitude: 60°40' N
Longitude: 17°10' E
Height above sea level: 16 m.
Local Time: GMT+1

Code: SWE1
Type: General class.
Operation:
Started in July 1993.

Topographic map showing the land
within a 5 km radius of the station location

GÄVLE, SWEDEN

Site surroundings:

The station is located in Brynäs, the east part of Gävle, a city with some 80,000 inhabitants. The city is situated at the inner part of a narrow bay. The terrain is flat. Within a 5 km radius of the station, the surroundings are 53% urban and suburban housing, 38% forests and 9% farmland and water. A pulp mill is located 6 km to the east.

Climate characteristics:

The climate is cold temperate and humid without any dry season. There is some maritime influence. The mean temperature in January is -4.8°C and in July is 16.3°C. The mean annual sunshine duration is about 1800 hours. In the winter, the ground is covered with snow for 125 days on average. A climate station is located in the very same block, a more complete one Utvalnäs is 13 km to the NE.

Map showing the immediate surroundings of the station

GÄVLE, SWEDEN

Sampling Interval:
1 mn.
Recording Interval:
5 mn.

Illuminances:
Global horizontal: Licor LI-210 SZ
Diffuse horizontal: Licor LI-210 SZ
North vertical: Licor LI-210 SZ
East vertical: Licor LI-210 SZ
South vertical: Licor LI-210 SZ
West vertical: Licor LI-210 SZ

Irradiances:
Global horizontal: Kipp & Zonen CM11
Diffuse horizontal: Kipp & Zonen CM11

Others:
none

Shadow band specifications:
Diffuse illuminance: (SIB shading disk)
radius: 7.0 cm / distance: 70.0 cm
Diffuse irradiance: (SIB shading disk)
radius: 7.0 cm / distance: 70.0 cm

Station map

Obstruction for the global
horizontal illuminance sensor

Comments

The sensors for diffuse illuminance and irradiance are shaded with suntracking shading disks.
To withstand the Scandinavian winter climate, the Licor photometers are mounted in a thermostatically controlled measuring head which can house up to five sensors. Each sensor is covered by a glass dome. The measuring head which is made of anodized aluminium has built-in heating elements and a fan which provides air circulation under the glass domes. In order to control the temperature of each photometer, each one is equipped with a small temperature sensor. These temperatures are measured continuously.

GÄVLE, SWEDEN

View 1 of the station

Comments

This view of the station is looking toward North. To the left, the global horizontal and the vertical illuminances can be seen. In the center, there is the diffuse irradiance sensor and on the right, there is the diffuse illuminance sensor. These two sensors are equipped with shadow disks.

View 2 of the station

Comments

This view shows the global horizontal irradiance sensor placed to the right of the sensors above.

GÄVLE, SWEDEN

Important modifications made to the acquisition system, recording interval modification, time during which the station was not operating...

Date

Comments

Until Sep 1, 93Station is tested.
Sep 6, 93Until 10:00. Diffuse horizontal irradiance not correct.
Sep 21, 93From 15:10 to 24:00. No recordings, Adjustement of equipements.
Oct 19, 93 to
Oct 20, 93		No recordings.
Oct 29, 93Until 10:00. No recordings, Adjustement of equipements.
Nov 7, 93 to
Nov 8, 93		No recordings, Adjustement of equipements.
Dec 6, 93Diffuse horizontal irradiance not correct.
Dec 8, 93No recordings.
Dec 9, 93From 10:00 to 12:30. Diffuse horizontal illuminance and irradiance not correct.
Jan 3, 94Until 11:10. Global horizontal irradiance not correct due to snow.
Jan 29, 94Diffuse horizontal illuminance and irradiance not correct, missing sun shading.
Mar 28, 94From 9:05 to 10:05. Diffuse horizontal illuminance missing.
May 2, 94Until 10:55. Diffuse horizontal illuminance missing.
Sep 12, 94Until 11:00. Diffuse horizontal illuminance and irradiance not correct.
Sep 22, 94Until 12:20. Diffuse horizontal illuminance and irradiance not correct.
Sep 29, 94Recordings stopped for calibration of sensors.

Last modification : March 28, 1997.
WebMaster IDMP : idmp.master@entpe.fr