Carbon dioxide rise, swing and spread (seasonal fluctuations) are addressed in this study. Actual CO<sub>2</sub> concentrations were used rather than dry values. The dry values are artificially higher beca...Carbon dioxide rise, swing and spread (seasonal fluctuations) are addressed in this study. Actual CO<sub>2</sub> concentrations were used rather than dry values. The dry values are artificially higher because water vapor must be removed in order for the NDIR instrument to work and is not factored back into the reported numbers. Articles addressing these observations express opinions that are divergent and often conflicting. This investigation resolves many of those inconsistencies. The data were obtained from many measuring stations at various latitudes since 1972 and then graphical compared to changes in sea temperatures, fossil fuel emissions, humidity, and seasonal ice and snow changes. In analyzing the data, various parameters were addressed including: variability, R squared curve values, correlations between curves, residence times, absorption percentages, and Troposphere effects. Mass balance calculations were also made to corroborate viability. The CO<sub>2</sub> “rise” over a 33-year period from a slight ocean temperature increase (0.7°F) contributed 2.3 percent of the total rise while fossil fuel emissions contributed 1.5 percent. The overwhelming majority (60 ppmv, 96%+) was caused by other factors including ocean and land biology as well potential errors in fundamental hypotheses. With respect to “spread” (seasonal CO<sub>2</sub> fluctuations) at the Polar Circles, graphical analysis with high correlations supported by mass balance calculations confirm that ice and snow are the primary cause and explain why the concentrations are the highest at these cold locations. The global variations in “swing” remain uncertain.展开更多
There are many factors that may lead to the breakup of shore fast ice, such as wind, wave, tide and so on. This paper mainly analyzed the ice breakup on the shallow beach due to tidal fluctuation. The theoretical mode...There are many factors that may lead to the breakup of shore fast ice, such as wind, wave, tide and so on. This paper mainly analyzed the ice breakup on the shallow beach due to tidal fluctuation. The theoretical model was set up and the fitting range was given. The calculated result shows that the slope angle α, the ice thickness h, and the ice length l are key factors in determining the ice breakup length l p.展开更多
文摘Carbon dioxide rise, swing and spread (seasonal fluctuations) are addressed in this study. Actual CO<sub>2</sub> concentrations were used rather than dry values. The dry values are artificially higher because water vapor must be removed in order for the NDIR instrument to work and is not factored back into the reported numbers. Articles addressing these observations express opinions that are divergent and often conflicting. This investigation resolves many of those inconsistencies. The data were obtained from many measuring stations at various latitudes since 1972 and then graphical compared to changes in sea temperatures, fossil fuel emissions, humidity, and seasonal ice and snow changes. In analyzing the data, various parameters were addressed including: variability, R squared curve values, correlations between curves, residence times, absorption percentages, and Troposphere effects. Mass balance calculations were also made to corroborate viability. The CO<sub>2</sub> “rise” over a 33-year period from a slight ocean temperature increase (0.7°F) contributed 2.3 percent of the total rise while fossil fuel emissions contributed 1.5 percent. The overwhelming majority (60 ppmv, 96%+) was caused by other factors including ocean and land biology as well potential errors in fundamental hypotheses. With respect to “spread” (seasonal CO<sub>2</sub> fluctuations) at the Polar Circles, graphical analysis with high correlations supported by mass balance calculations confirm that ice and snow are the primary cause and explain why the concentrations are the highest at these cold locations. The global variations in “swing” remain uncertain.
文摘There are many factors that may lead to the breakup of shore fast ice, such as wind, wave, tide and so on. This paper mainly analyzed the ice breakup on the shallow beach due to tidal fluctuation. The theoretical model was set up and the fitting range was given. The calculated result shows that the slope angle α, the ice thickness h, and the ice length l are key factors in determining the ice breakup length l p.
