The Institute of Environmental Research and Sustainable Development
(IERSD) is one of the five institutes that constitute the
National Observatory of Athens (NOA).
In 1998, the Institute's name has changed from Institute
of Meteorology and Physics of the Atmospheric Environment
(IMPAE) to Institute of Environmental Research and Sustainable
Development (IERSD), in order to encompass its new objectives
The NOA, the oldest research center in Greece, was founded
in 1842 and started operating in 1846 the Institute of Meteorology,
when the first meteorological observations began.
Since 1858, the IERSD has been operating a complete first-class
Up until 1931, the IERSD was the main meteorological establishment
in the country, operating almost all the existing network
of meteorological stations.
In 1932, the operation of all stations was undertaken by the
newly founded Hellenic National Meteorological Service (HNMS),
but all the meteorological records, until 1931, remained in
The IERSD was the first organisation that started a systematic
study of the urban pollution in Athens. The first automatic
measurements of pollutant concentrations were taken in 1980.
IERSD also established the only station in Greece devoted
to atmospheric electricity measurement and research, in 1965-69.
Since 2001, the management and most research offices of IERSD
have relocated on the hill of Koufos, nearby Penteli mountain,
about 15Km from the center of Athens (Latitude: 38° 3'
N, Lontitude: 23° 52' E, and 495m above MSL). A few research
offices of IERSD are still located on the hill of Nymphs (Thissio
area), opposite Acropolis and near the Athens city center
(Latitude: 37° 58' N, Lontitude: 23° 43' E, and 107m
above MSL). The meteorological station of the IERSD still
remains at Thissio site to maintain consistency with the time
series of measurements since late 1800.