The files include daily observations of mean, maximum and minimum air temperature, mean daily values of relative humidity and daily precipitation amount since 1901 in Athens. The data are derived from the historical climatic station of the National Observatory of Athens (the oldest climatic station of Greece). The station has been permanently established atT hissio, on the small Hill of Nymphs (latitude: 37.972 N, longitude: 23.717 E, altitude: 107 m above MSL) near the centre of Athens since the late 19th century, without relocations over the years. The ...

Measurements of atmospheric and oceanographic variables (wind speed and direction, relative humidity, dew point, atmospheric pressure and temperature, sea temperature, pressure and salinity) were collected from the Kalloni Bay mooring (26.2084, 39.1677) in Lesvos Island.

PM10 mass concentration data from Helmos station

The MIDAS (Modis Dust AeroSol) satellite dataset provides mid-visible (550nm) columnar aerosol and dust optical depth on a daily basis, at a global scale and at fine spatial resolution (0.1 x 0.1 degrees). Relevant publications: Gkikas, A., Proestakis, E., Amiridis, V., Kazadzis, S., Di Tomaso, E., Tsekeri, A., Marinou, E., Hatzianastassiou, N., and Pérez García-Pando, C.: ModIs Dust AeroSol (MIDAS): a global fine-resolution dust optical depth data set, Atmos. Meas. Tech., 14, 309–334, https://doi.org/10.5194/amt-14-309-2021, 2021. Gkikas, A., ...

Time-series of daily discharge of the 16 largest Greek rivers.

The file includes annual count of days of extreme temperature and precipitation using the indices Tropical Nights (TN): annual count of days when Tmin > 20 oC Tropical Days (TD): annual count of days when Tmax > 30 oC Summer Days (SD): annual count of days when Tmax > 25 oC Hot Days (TD): annual count of days when Tmax > 35 oC Frost Days (FD): annual count of days when Tmin < 0oC Wet Days (WD): annual count of days with rainfall R > 1mm Heavy Rainfall (R30): annual count of days with rainfall R > 30mm Very heavy Rainfall (R40): annual count of da...

Collection of paleoclimate proxy data, to create spatio-temporal paleoclimate restoration fields, with the aim of understanding mechanisms of significant climate changes in the last 2,000 years. Nar Lake δ18O data (Jones et al. 2006) provide indirect information on the amount of precipitation through the precipitation-evaporation balance. The Ti (cps) record of Lake Neor (Sharifi et al. 2015) determines the aeolian input to the regional peatland of Lake Neor that increases during dry periods. The high-resolution Ti/Ca record of the stratified coastal lake ...

One of the objectives of Action 2.1 "Data from aquatic (marine and terrestrial) ecosystems related to climate change" was to propose a management protocol of harmful algal blooms (HABs) in order to protect public health from exposure to the risk of cyanotoxins. Cyanotoxins released into lake water by toxic cyanobacteria are a large group of compounds with diverse physicochemical properties, chemical structures and toxic effects (hepatotoxic, neurotoxic, dermatotoxic, cytotoxic). International organizations such as WHO, US EPA and the Global Water Research ...

In the framework of Action 2.1 "Data from aquatic (marine and terrestrial) ecosystems related to climate change", the Photo-Catalytic Processes and Environmental Chemistry group of the Institute of Nanoscience and Nanotechnology of the National Centre for Scientific Research "Demokritos", focused on the study of the history of harmful algal blooms in aquatic ecosystems of Greece. One of the effects of climate change is the more frequent occurrence of harmful algal blooms in surface waters, which are mainly favored by the global warming, the eutrophicatio...

Hourly ozone values in ppb from the Finokalia station since 1997 of the Laboratory of Environmental Chemical Processes (ECPL) of the Department of Chemistry of the University of Crete