Slovenian Network of Isotopes in Precipitation (SLONIP) – a review of activities in the period 1981–2015

Abstract

The fist investigations of oxygen and hydrogen isotope composition (δ18O and δ2H) and the tritium activity (3H) in precipitation over Slovenia were performed in the frame of tracer experiments conducted in the period 1972–1975 in the Ljubljanica River drainage basin. The fist regular and systematic monitoring of isotope composition of precipitation only began in 1981 in Ljubljana but has been extended during the last 35 years to 30 different locations countrywide. Herein, we present a review of research performed during the period 1981–2015. We collected information about sampling, analytical methods, available data and their evaluation including calculations of local meteoric water lines. Based on the data, we identify gaps in the research and make recommendations for future monitoring in the frame of the Slovenian Network of Isotopes in Precipitation (SLONIP).

Keywords

• precipitation
• isotopes
• oxygen
• hydrogen
• tritium
• GNIP
• SLONIP
• Slovenia