ATHENS, GREECE

Contacts: Mr Michael Petrakis Institute of Meteorology and Physics of the Atmospheric Environment National Observatory of Athens P.O Box 20048 GR 11810 Athens, Greece Tel : (30) 1 345 6257, (30) 1 346 4566 Fax : (30) 1 342 1019 E-mail : mike@env.meteo.noa.gr Server :	Station Location: Athens, Greece. Latitude: 37°58' N Longitude: 23°43' E Height above sea level: 107 m. Local Time: GMT+2 Code: GRC1 Type: General class. Operation: Started on December 1, 1991.
Topographic map showing the land within a 5 km radius of the station location

ATHENS, GREECE

Site surroundings: Within a 5 km radius of the station, the environment is 50% residential on an area spreading along the north-south axis. To the east of this axis, 25% is a less dense residential area. To the west, the remaining 25% area is 3/4 industrial and 1/4 residential. Athens is a city known for environmental degradation with important air pollution levels.	Climate characteristics: Climate is mediterranean with hot dry summers and wet mild winters. Average temperature in January is 9.4°C and in July is 27.1°C. Average annual sunshine duration is 2919 hours. There is a weather station on the same building as the IDMP station.
Map showing the immediate surroundings of the station

ATHENS, GREECE

Sampling Interval: 1 mn. Recording Interval: 5 mn. Illuminances: Global horizontal: LMT BAP 30 FCT Diffuse horizontal: LMT BAP 30 FCT North vertical: LMT BAP 30 FCT East vertical: LMT BAP 30 FCT South vertical: LMT BAP 30 FCT West vertical: LMT BAP 30 FCT Irradiances: Global horizontal: Eppley PSP Diffuse horizontal: Eppley PSP Others: Zenith luminance: LMT (11° angle) Dry Bulb Temperature: Qualimetrics Inc. Wet Bulb Temperature: Qualimetrics Inc. Wind direction: Qualimetrics Inc. Wind speed: Qualimetrics Inc. Shadow band specifications: Diffuse illuminance: radius: 31.0 cm / width: 7.5 cm Diffuse irradiance: radius: 31.0 cm / width: 7.5 cm

Station map Obstruction for the global horizontal illuminance sensor

Comments Vertical sensors are kept away clear from reflected light coming from the ground by being set in the centre of a square black honeycomb material. Calibrations of the diffuse illuminance sensor has been performed at the Building Research Establishment in September 1992. A prototype irradiancemeter has been calibrated at PRMOD - World Radiation Center, in August 1992. Outputs of all other sensors have been compared and adjusted to the calibrated sensors.

ATHENS, GREECE

View 1 of the station	Comments This view of the station is looking toward North. In the center of the picture, the global horizontal and the four vertical illuminances can be seen on the black honeycomb material.
View 2 of the station	Comments This view of the station is looking toward South-East. The diffuse illuminance and the diffuse irradiance can be seen on the right.

ATHENS, GREECE

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

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