Scholarly record

QUANTA BEHAVIOR OF METEOROLOGICAL PARAMETERS ON A THREE-HOUR MEASUREMENTS IN THE VEGETATION PERIOD BIRCH

Petr Mazurkin

Abstract

Factor analysis of three-hour dynamics for the vegetation period of birch leaves from 01.05.2014 to 30.09.2014 of four meteorological parameters: atmospheric pressure; air temperature; relative humidity; dew point temperature was carried out by the method of identification of stable regularities (weather station Yoshkar-Ola, Russia, 2917WMO_ID=27485). Power sample consisted of 1222 of the row. The correlation coefficient 0.4677 is less than 0.5065 for the year between winter solstices, but slightly more than 0.4583 for the seven-year data set. It has been proved that the ontogenesis of birch leaves is most influenced by the relative humidity, the dew point temperature on the second and the air temperature on the third place. By the influence of air pressure the adequacy of the model by the correlation coefficient 0.7241, which is more than 0.6776 for one year. The first term shows the decrease in air pressure from the blooming of birch buds before leaf fall. But the second term shows the stress excitation of air pressure. As a result, the change in pressure in the dynamics of three-hour changes during the growing season are recession and excitation. And two wavelets with constant periods counteract the growth of air pressure the Third member has a cycle of oscillation of 56.3 days, and the second wavelet had a period of 15.4 days. For the influence of air temperature is characterized by two forces directed opposite. The first term according to the law of exponential growth shows an increase in positive temperatures due to increased solar radiation. And the second term of the trend according to the exponential law shows the influence of space on the temperature decrease. As a result of the action of the two forces, the maximum air temperature is observed near the summer equinox. Both wavelets on the sign are aimed at increasing the temperature of the air, which indicates global warming. With a minimum constant period of 0.5 days, a second oscillation with an adequacy of 0.6497 is observed. To this constant dynamics adapted leaves of plants. The influence of relative humidity is characterized by the fact that the first member is the law of death. The second term is the biotechnical law showing the limit of increase. The third term (the first wavelet) characterizes the daily fluctuation with a constant period of 0.5 days (correlation coefficient 0.6638). All four members of the model are aimed at increasing humidity. In comparison with the air temperature, the relative humidity has a more pronounced amplitude with the daily cycle of oscillatory perturbation (correlation coefficient 0.6638 in comparison with 0.6397). In this case, the daily fluctuation for relative humidity is the first oscillation, and for air temperature ? the second. To affect the dew point temperature of the first member is the law of death, and the second ? biotech law. This gives a maximum of about the summer equinox. Both wavelets are aimed at reducing the dew point temperature. The first oscillation in the form of a tremor can have a starting effect on the start of leaf vegetation with a constant period of 13 days.

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DOI resolver: doi.org/10.5593/sgem2019/5.1/s20.075

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