Рубрики:
EASTERN TROPICAL PACIFIC
NORTH-ATLANTIC
TIME-SERIES
PHYTOPLANKTON
SEA
VARIABILITY
STOCKS
Кл.слова (ненормированные):
chlorophyll -- remote sensing -- dynamic -- season -- ocean
EASTERN TROPICAL PACIFIC
NORTH-ATLANTIC
TIME-SERIES
PHYTOPLANKTON
SEA
VARIABILITY
STOCKS
Кл.слова (ненормированные):
chlorophyll -- remote sensing -- dynamic -- season -- ocean
Аннотация: Seasonal dynamics of phytopigment concentrations in the ocean is one of the key factors indicating the types and intensity of hydrobiological exchange processes in the ocean surface layer. Thanks to the efficient operation of the SeaWiFS equipment for the last 7 years we have managed to carry out statistical analysis of image time series, which is necessary for estimation of reliability of investigations of oscillatory hydrobiological processes on a global scale. Using the autocorrelation method, we revealed a pronounced heterogeneity of the types of seasonal dynamics in the ocean. Statistically significant seasonal dynamics of phytopigment concentrations exists only at 19% of the area of the Global Ocean. On 51% of the area seasonal dynamics is disturbed essentially so, that becomes statistically insignificant and is absent at 30%. The most interesting feature of the pattern obtained was the diversity of the seasonal dynamics of chlorophyll concentration under similar climatic conditions. Another interesting feature of such data presentation is that two types of seasonal dynamics - yearly and half-yearly - were defined. The detected zonality will provide the basis for more efficient development and application of ecological modeling, taking into account real-life hydrobiological and hydrological conditions. (C) 2006 Published by Elsevier Ltd on behalf of COSPAR.
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Доп.точки доступа:
Shevyrnogov, A.; Vysotskaya, G.; Высоцкая, Галина Степановна