Izana Atmospheric Research Center

The Secretariat of the World Meteorological Organization issues bulletins containing information on the state of the ozone layer in the Antarctic at roughly two week intervals from August to November. The bulletins are based on data provided by WMO Members which operate ozone monitoring stations in the southern hemisphere and satellites to observe ozone globally. Data from the Antarctic Network of NILU radiometers, managed by the Izaña Atmospheric Research Center (AEMET), contributes to the WMO Antarctic bulletins. The first bulletin issued More...

In this paper the authors show that the near infrared solar absorption spectra recorded in the framework of the Total Carbon Column Observing Network (TCCON) can be used to derive the vertical distribution of tropospheric water vapour. Using spectral H2O signatures in the 4,500–4,700 cm−1 region one can well distinguish lower from middle/upper tropospheric water vapour concentrations. The vertical resolution is about 3 and 6 km, for the lower and middle/upper troposphere, respectively. They document the quality of the remotely-sensed More...

The 37th Annual European Meeting on Atmospheric Studies by Optical Methods, was held at the Faculty of Sciences (University of Valladolid) on August 23-27, 2010. The meeting was organized by the Atmospheric Optics Group of this University, and brought together scientists and graduate students from Europe as well as from other parts of the world to exchange experience and ideas, share scientific results, and plan and coordinate future experiments. Optical methods have been used for studies of the atmosphere for centuries, but recent More...

The Fifth Intercomparison Campaign of the Regional Brewer calibration Center for Europe (RBCC-E) was held at Arosa Lichtklimatisches Observatorium (LKO) of Meteo Swiss during the period July 19-30, 2010. Seven Brewer spectrophotometers managed by eleven experts of five countries participated in thethe campaign. The instruments were compared with the RBCC-E travelling reference Brewer#185 for ozone and with the QASUME unit (European UV reference from the World Radiation Center (WRC)) for UV,. Maintenance of the instruments were performed by IOS More...

The graphics (click inside the graphics to see them at a larger size) show the molecular mixing ratios of atmospheric carbon dioxide (CO2) and methane (CH4) measured (daily means of the night period) at Izaña Atmospheric Observatory, from 1984 till present. During the night period, the atmospheric measurements at Izaña are representative of the free troposphere conditions, because during such period, the observatory is not affected by the local and regional sources of such gases (during daytime there can be a very small influence of them). More...

Air pollution by ultrafine particles (diameter smaller than 0.1 micron) has become in a matter of concern for air quality managers. Several reports of the European Union advice to Member States and to scientific community to perform studies that lead to identify the origin of ultrafine particles and their health effects on human health.A new study published in Atmospheric Chemistry and Physics - ACP (issue of July, vol 10, n7) shows how emissions of sulphur dioxide (SO2) from crude oil refineries, industrial activities, power plants and More...