Variability of hydrometeorological conditions in Donuzlav Lake (Crimea) in 2016
2017
Kochergin, A.T. | Zagayny, N.A. | Kriskevich, L.V.
Special aspects of the hydrometeorological situation in Donuzlav L . (Crimea) region during spring, summer and autumn of 2016 were considered . Abnormality of the hydrological conditions was observed: extreme water warmup in the spring and early summer time periods, and cooling in autumn with divergence from the temperature norm, respectively, up to more than 3 °C and minus 5 °C . Intra-annual variability of salinity was normal: decreased values in April, with fresh water brought with floods, and maximum values in August, when water and air temperatures were increased and active evaporation occurred . Full cycle of intra-annual variations in oxygen content was recorded, from high values in April and June during the period of maximum and increased phytoplankton biomass, to the lowest values under abnormally warm conditions in August, which slightly increased due to water cooling in October . Water transparency depended mainly on phytoplankton abundance, with inverse relation . Spatial variability of hydrological parameters was determined to a great extent by the depth of some lake areas, as well as by advection of the water, which differed from that in the lake connected with the sea through the channel
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