caa a22 4500 445890983 CHVBK 20180317145616.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10750-011-0691-7 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0691-7 Morphometry and trophic state modify the thermal response of lakes to meteorological forcing [Elektronische Daten] [Peeter Nõges, Tiina Nõges, Michela Ghiani, Bruno Paracchini, Joaquin Pinto Grande, Fabrizio Sena] We hypothesised that (i) a summer heat wave would increase the thermal stability of lakes and (ii) the size and trophic state differences would modify the lakes' responses to heating. Within 2 years, 2008 and 2009, we studied the thermal and optical regimes of two adjacent stratified lakes in northern Italy, the oligo-mesotrophic Lake Monate (2.5km2, max. depth 34m) and the eutrophic Lake Varese (14.8km2, 26m). After the cold winter 2008-2009, a heat wave starting in May turned the whole year 2009 the second hottest after 2003. The particular sequence of meteorological events resulted in extreme vertical temperature gradients and unusually high thermal stability of both lakes. All calculated thermal parameters showed the highest values in 2009 while also the values for 2008 exceeded considerably those published for these lakes in the past. Due to the large wind exposed surface, wind mixing was supposedly the dominating mechanism of heat transfer in the shallower eutrophic Lake Varese where, due to low water transparency, large amount of solar energy trapped in the upper layers markedly increased the thermal stability. In the deeper and more transparent Lake Monate, the deeper penetrating solar irradiance contributed to better energy dissipation within the water column and smaller interannual differences in thermal stability. Springer Science+Business Media B.V., 2011 Thermal stratification nationallicence Heat content nationallicence Birgean work nationallicence Schmidt stability nationallicence Water transparency nationallicence Nõges Peeter European Commission, Joint Research Centre, Institute for Environment and Sustainability, Via Enrico Fermi, 2749, 21027, Ispra, Italy aut Nõges Tiina European Commission, Joint Research Centre, Institute for Environment and Sustainability, Via Enrico Fermi, 2749, 21027, Ispra, Italy aut Ghiani Michela European Commission, Joint Research Centre, Institute for Environment and Sustainability, Via Enrico Fermi, 2749, 21027, Ispra, Italy aut Paracchini Bruno European Commission, Joint Research Centre, Institute for Environment and Sustainability, Via Enrico Fermi, 2749, 21027, Ispra, Italy aut Pinto Grande Joaquin European Commission, Joint Research Centre, Institute for Environment and Sustainability, Via Enrico Fermi, 2749, 21027, Ispra, Italy aut Sena Fabrizio European Commission, Joint Research Centre, Institute for Environment and Sustainability, Via Enrico Fermi, 2749, 21027, Ispra, Italy aut Hydrobiologia Springer Netherlands 667/1(2011-06-01), 241-254 0018-8158 667:1<241 2011 667 10750 https://doi.org/10.1007/s10750-011-0691-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0691-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nõges Peeter European Commission, Joint Research Centre, Institute for Environment and Sustainability, Via Enrico Fermi, 2749, 21027, Ispra, Italy aut NATIONALLICENCE 700 1- Nõges Tiina European Commission, Joint Research Centre, Institute for Environment and Sustainability, Via Enrico Fermi, 2749, 21027, Ispra, Italy aut NATIONALLICENCE 700 1- Ghiani Michela European Commission, Joint Research Centre, Institute for Environment and Sustainability, Via Enrico Fermi, 2749, 21027, Ispra, Italy aut NATIONALLICENCE 700 1- Paracchini Bruno European Commission, Joint Research Centre, Institute for Environment and Sustainability, Via Enrico Fermi, 2749, 21027, Ispra, Italy aut NATIONALLICENCE 700 1- Pinto Grande Joaquin European Commission, Joint Research Centre, Institute for Environment and Sustainability, Via Enrico Fermi, 2749, 21027, Ispra, Italy aut NATIONALLICENCE 700 1- Sena Fabrizio European Commission, Joint Research Centre, Institute for Environment and Sustainability, Via Enrico Fermi, 2749, 21027, Ispra, Italy aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 667/1(2011-06-01), 241-254 0018-8158 667:1<241 2011 667 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer