دراسة التغير النسبي لقيم الأوزون في بغداد

الملخص EN

The research focuses on the geographical scientific efforts related to climatology, which aims to clarify the relative change of ozone values in the Baghdad station, as it is one of the main factors affecting the life activities of various living organisms, and therefore it serves as a safeguard for the environment from the danger of deterioration and pollution, and researchers can understand these changes in various And develop strategies to change these phenomena and explain them after understanding their surroundings, and thus a normal life can be maintained.

The researcher relied on data and information on the website of the European Center for Medium-Range Weather Forecasts for the period (1986-2018) AD, through the use of statistical methods and the selection of the most important methods by which ozone can be calculated in the study area, and thus the analysis of the relative change in the study area was applied.

Research in the station (Baghdad), so in this research it will be based on the use of the general trend method and the relative rate of change in order to clarify the changes occurring in the ozone values in the study area, and to detect the general trend and rate of change in the study area (Trend Detection) the general trend was calculated For the annual rates of the time series (for the climate elements), the trend coefficient was expressed as a percentage of all the variables in the climate elements, as well as for the annual rates of change)).

The research found the following: 1.

There was a spatial variation in the ozone values during the study period, where the highest trend coefficient was recorded in the month of (May) and it reached (0.0202) Dobson, and the lowest trend coefficient was recorded during the month of September (-0.0099) Dobson.

2.

The trend coefficient appeared during the study periods for ozone values in the Baghdad station and amounted to (0.0004), where a trend coefficient was recorded during the first cycle of (0.0019) Dobson, while in the second climatic cycle a trend coefficient was recorded at (-0.0606) Dobson, as it was recorded during Al-Durra The third climatic trend factor amounted to (0.0482).

3.

The highest relative rate of change was recorded in the month of May during the study period, and it amounted to (0.72)% Dobson, while the lowest relative rate of change was recorded in a month and it amounted to (-0.53)% Dobson 4.

The annual rates varied, the annual relative change of ozone in the Baghdad station ranged between ((-2.63 - 2.24) % Dobson unit.

A spatial variation of ozone was found in the study area.

Where the relative rate of change during the study periods was (0.02).5.

It appeared that the lowest relative rate of ozone change during climatic cycles was (-2.63) Dobson, and compared with the global average of (300) Dobson units، All months in Baghdad station also recorded a positive general trend.