Simulation and Predictability of Seasonal and Interannual Variations

MEASUREMENTS OF CHANGES in atmospheric molecular oxygen using a new itechnique shows that the oxygen content of air varies seasonally in both the Northern and Southern Hemispheres, and is decreasing from year to year. The seasonal variations provide a new basis for estimating global rates of biological organic carbon production in the ocean, and the interannual decrease constrains estimates of the rate of anthropogenic CO2 uptake by the oceans.

One example of research into variations are the interannual and interdecadal zooplankton population changes that have been observed in parallel with temperature (SST) changes at Helgoland, in the North Sea, over a period of 32 years.

Temperature determines the phenological timing of populations for each species in a unique way as to be seen in multiannual regressions. Sign, ...