ANOMALOUS PHENOMENA IN THE BLACK SEA PHYTOPLANKTON DEVELOPMENT, RECORDED BY REMOTE SENSING METHODS
On the base of satellite data analysis for the period 2000–2020, anomalous phenomena in the development of phytoplankton in the Black sea were recorded. In the chlorophyll “a” field, anomalous summer blooms were detected in 2001, 2010 and 2015, which developed under conditions of a negative anomaly in the surface layer temperature caused by active wind mixing. The highest level of coccolithophorids summer blooms of development was fixed in 2006, 2012 and 2017. They were observed after abnormally cold winters. It is shown that in conditions of low summer temperatures, mass development of coccolithophorids may not occur. Over a twenty-year period, numerous signs of active winter vegetation of coccolithophorids were revealed on the base of satellite data. Winter blooms of coccolithophorids develop in warm winters with low wind activity. It is noted that after the winter blooms of coccolithophorids, their summer vegetation is largely smoothed. The influence of hydrometeorological factors on seasonal and inter annual variability of phytoplankton is discussed.