New data on the spatial and temporal variability of the chlorophyll a concentration in the White Sea

Suspended particulate matter in the White Sea: the results of long-term interdisciplinary research

“…the threshold for characterizing the waters as eutrophic. The thickness of photic layer in the White Sea is 10-15 m on average (Kravchishina et al 2013). In summer, the maximal concentration is observed in the surface water layer (about 0-10 m), sometimes in the very surface layer of 0-5 m.…”

“…Real measurements, which are highly local ("point") in the spatial sense and nearly "instant" in the temporal sense, can show higher variations than satellite data averaged over area (2 km × 2 km) and time (day-month-year). Analysis of the seasonal and interannual variations in the SPM and Chla concentration from satellite data has allowed us to reveal the characteristic features of these variations in the period discussed (2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010) (Kravchishina et al 2013, Lisitzin et al 2013.…”

Features of satellite remote sensing of seawater biological parameters in the eastern part of Russian Arctic waters

“…However, at high latitudes, especially in the Arctic, there are a number of specific conditions affecting the quality of the resulting satellite information 10,11 . It is the presence of ice, frequent cloudiness, low zenith angles of the sun, the low concentration of atmospheric aerosols, specific stratification and functional state of phytoplankton communities.…”

Sources of data for numerical simulation of the White Sea for developing the Russian Arctic area

“…19 http://optics.ocean.ru. 20 https://www.nnvl.noaa.gov/view/globaldata.html. 21 https://oceancolor.gsfc.nasa.gov.…”

“…Это создает определенное противоречие между модельными предсказаниями сильно варьирующих величин (таких, например, как биогеохимические характеристики, включая концентрацию хлорофилла «а») и измерениями in situ. В самом деле, пробы в близких участках, взятые с небольшим интервалом времени, могут давать расхождение величин на порядок [20], тогда как с точки зрения модели эти пробы соответствуют одному узлу пространственно-временной сетки. Локальные особенности гидрологического режима (впадающий в море ручей, интенсивные течения в проливе между небольшими островами, припай и т.…”