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Global Static Energy Trend

Abstract

This study aimed to analyze trends in static energy from the atmosphere to the Globe, through reanalysis from the National Centers for Envionmental Prediction / National Center for Atmospheric Research (NCEP / NCAR), so the trends in dry, wet and dry static energies were analyzed. saturated for the Northern Hemisphere (HN), Southern Hemisphere (HS) and Globo, during 1987-2016. For the calculation of energies and vertical integration, monthly data of the variables of surface pressure, air temperature, specific humidity and geopotential height of the NCEP / NCAR reanalysis were used and presented in table, graph and image forms, as a test of statistical significance. Mann Kendall and Student were applied. The results show that the seasonal variability of static energies for H.N and H.S presents maximum (minimum) values in the summer (winter) season. Positive trends are observed in the dry, wet and saturated static energy series, just as statistical tests indicate 99% significance (α = 0.01) for trends. In the spatialization of trends on the Globe, there is an expressive coverage of areas with an average trend of -0.5 to 4.5 x 102 (kJ/m2)/year.

Keywords:
convection; Student's t; reanalysis; static energies

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