{"id":12983,"date":"2026-04-15T07:18:39","date_gmt":"2026-04-15T07:18:39","guid":{"rendered":"https:\/\/www.iersd.noa.gr\/network-of-radiometric-stations\/"},"modified":"2026-04-15T09:22:08","modified_gmt":"2026-04-15T09:22:08","slug":"network-of-radiometric-stations","status":"publish","type":"page","link":"https:\/\/www.iersd.noa.gr\/en\/network-of-radiometric-stations\/","title":{"rendered":"Network of Radiometric Stations"},"content":{"rendered":"\n
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Network of Radiometric Stations<\/strong><\/h4>\n\n\n
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The first Radiometric Station of the National Observatory of Athens (NOA) (ASEAA) has been operating continuously in Thissio since 1953, when the systematic recording of solar radiation<\/strong><\/a> essentially began worldwide. It is the oldest radiometric station in the country, with continuous recording of total solar radiation since the mid-20th century, and other radiation parameters were subsequently added. It is characterized as “urban” because it operates within the urban fabric of Athens. <\/p>\n\n\n\n

The ASEAA covers the spectrum of activities of the IERSD concerning measurements of solar radiation parameters (total and diffuse components, both on a horizontal surface and at selected inclinations and orientations, ultraviolet), terrestrial infrared radiation, and natural illumination (total and diffuse on a horizontal surface, since 1991). It now also includes a Spectrometric Radiometric Platform (SRP) that provides a series of spectral measurements of total and direct radiation, as well as measurements of atmospheric constituent columns. It includes a Pandora-type spectrophotometer (a member of the Pandonia network) providing information on the total and tropospheric column of ozone (O3), nitrogen dioxide (NO2), and formaldehyde (CH2O).
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A second automatic radiometric station has been operating at the IERSD facilities in Penteli, at the highest point of Koufou hill, since June 1999, covering measurements of both solar radiation parameters (total and diffuse components) and terrestrial infrared radiation and natural illumination (total). In 2016, within the framework of the KRIPIS research program, the station was equipped with new state-of-the-art equipment, maintaining the existing measured parameters and adding the recording of ultraviolet (UV) radiation intensity in two spectral regions, UV-A and UV-B.
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In February 2020, another radiometric station within Attica, installed in the Municipality of Peristeri, was integrated into the IERSD’s radiometric network. Concurrently, since 2011, the expansion of the IERSD’s radiometric station network to areas outside the Attica prefecture has begun, currently including eight automatic stations scattered across Greece, specifically: in Klokoto (Trikala), in Larissa (Thessaly), in Methoni (Messenia, Southern Peloponnese), in Filotas (Florina), in Andros (Cyclades, 2 stations), in Elliniko (Gortynia, Central Peloponnese), and in Antikythera. Additionally, another high-altitude station (2340 m) is included in Neraidorachi of Mount Chelmos in Kalavryta (Achaia).
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At all the aforementioned radiometric stations outside Attica, the intensity of incoming total solar radiation (W\/m2) is recorded, while at three of them, the intensity of the diffuse component of solar radiation and sunshine duration (in minutes) are simultaneously recorded.
Furthermore, at all the aforementioned radiometric stations of the IERSD network, all basic meteorological parameters are also recorded, such as air temperature (\u00b0C) and relative humidity (%), atmospheric pressure (hPa), wind speed (m\/s) and direction (in degrees), as well as cumulative rainfall (mm), thereby also strengthening the IERSD\/NOA meteorological station network.
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At all the above stations, international operating standards and the prescribed scientific procedures for equipment maintenance and calibration are followed. Station measurements (radiometric and meteorological), in near real-time, are available to the public via the website www.iersd.noa.gr\/WeatherOnLine<\/strong><\/a>. For each measured parameter per station, its historical fluctuation for a period of 10 days is also available. All radiometric and basic meteorological observations and measurements are stored in a database for quality control and further statistical analysis. Radiometric data from the network’s radiometric stations can be provided upon communication with the Scientific Officer. <\/p>\n\n\n\n

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Network of Radiometric Stations The first Radiometric Station of the National Observatory of Athens (NOA) (ASEAA) has been operating continuously in Thissio since 1953, when the systematic recording of solar radiation essentially began worldwide. It is the oldest radiometric station in the country, with continuous recording of total solar radiation since the mid-20th century, and […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-12983","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.iersd.noa.gr\/en\/wp-json\/wp\/v2\/pages\/12983","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iersd.noa.gr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.iersd.noa.gr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.iersd.noa.gr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iersd.noa.gr\/en\/wp-json\/wp\/v2\/comments?post=12983"}],"version-history":[{"count":2,"href":"https:\/\/www.iersd.noa.gr\/en\/wp-json\/wp\/v2\/pages\/12983\/revisions"}],"predecessor-version":[{"id":13011,"href":"https:\/\/www.iersd.noa.gr\/en\/wp-json\/wp\/v2\/pages\/12983\/revisions\/13011"}],"wp:attachment":[{"href":"https:\/\/www.iersd.noa.gr\/en\/wp-json\/wp\/v2\/media?parent=12983"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}