Investigating Contributions of Total Column Ozone Variation on Some Meteorological Parameters in Nigeria

Okoro, Eucharia Chidinma; Okeke, F. N.; Omeje, Lilian Chinenyenwa

doi:10.4236/acs.2022.121010

Cited by 4 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generally, the relationship observe between TOC and cloud cover in this study is in conformity with the significant relationship reported between TOC and other climatic variables by [17] [18] [23] [30]. By comparing the seasonal and spatial distribution of TOC with climatic variables over Nigeria, TOC has similar and opposite variation trend with climatic variables as reported earlier.…”

Section: Resultssupporting

confidence: 91%

“…The result of this study is consistent with the findings of [16] [17] [18] [23] [30], who separately observed good relationship between TOC variability and other climatic variables. The implication of the observed relationship between TOC and climatic parameters is that, it will enhance the understanding of how the lower and upper atmospheres are interconnected.…”

Section: Discussionsupporting

confidence: 93%

“…Reference [18] [23] [30] have obtained both direct and inverse relationships between TOC and climatic variables. We hereby recommend further studies to ascertain the seasonal and spatial distribution of TOC with climatic variables in low, middle, and high latitudes as well as other tropical region; as this will enhence the understanding of the interconnectivity between the lower and upper atmosphere.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Preliminary Investigation of Total Ozone Column and Its Relationship with Atmospheric Variables

Audu¹,

Emmanuel²,

Abi³

et al. 2023

ACS

View full text Add to dashboard Cite

This study attempts to investigate the interaction between lower and upper atmosphere, employing daily data of Total Ozone Column (TOC) and atmospheric parameter (cloud cover) over Nigeria from 1998-2012; in order to study the dynamic effect of ozone on climate and vice versa. This is due to the fact that ozone and climate influence each other and the understanding of the dynamic effect of the interconnectivity is still an open research area. Monthly mean daily TOC and cloud cover data were obtained from the Earth Probe Total Ozone Mass Spectroscopy (EPTOMS) and the International Satellite Cloud Climatology Project (ISCCP)-D2 datasets respectively. Bivariate analysis and Mann Kendall trend tests were used in data analysis. MATLAB and ArcGIS software were employed in analyzing the data. Results reveal that TOC increased spatially from the coastal region to the north eastern region of the country. Seasonally, the highest value of TOC was observed at the peak of rainy season when cloud activity is very high, while the lowest value was recorded in dry season. These variations were attributed to rain producing mechanisms and atmospheric phenomena which influence the transport and distribution of ozone. Furthermore, the statistical analysis reveals significant relationship between TOC and low and middle cloud covers in contrast to high cloud cover. This relationship is consistent with previous studies using other atmospheric variables. This study has given scientific insight which is useful in understanding the coupling of the lower and upper atmosphere.

show abstract

Section: Resultssupporting

confidence: 91%

Section: Discussionsupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Preliminary Investigation of Total Ozone Column and Its Relationship with Atmospheric Variables

Audu¹,

Emmanuel²,

Abi³

et al. 2023

ACS

View full text Add to dashboard Cite

show abstract

“…These relationships are consistent with the results of other studies, except for the relationship between temperature and O 3 [56][57][58]. The negative relationship between temperature and O 3 might be explained by the depletion of the ozone layer due to an excess of ozone-depleting substances (ODS) over the study area [59,60]; furthermore, the production of chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) from air conditioning might deplete the ozone layer [61,62]. Solar radiation was negatively associated with NO 2 , SO 2 , and O 3 , which might be explained by chemical reactions that promote the transformation of NO 2 and SO 2 into nitrate and sulfate, respectively [63,64], as well as photodissociation reactions in the presence of solar radiation, which cause the breakdown of O 3 into oxygen [65][66][67].…”

Section: Average Coefficient Values Between Air Pollutants and Meteor...supporting

confidence: 90%

Investigating the Relationship between Air Pollutants and Meteorological Parameters Using Satellite Data over Bangladesh

et al. 2022

View full text Add to dashboard Cite

Understanding of the relationship between air pollutants and meteorological parameters on the regional scale is a prerequisite for setting up air pollution prevention and control strategies; however, there is a lack of methodical investigations, particularly in the context of Bangladesh’s deficiency of information on air pollution. This study represents the first attempt to investigate the relationship between air pollutants (NO2, O3, SO2, and CO) and meteorological parameters over Bangladesh using satellite data (OMI and MOPITT) during the period from 2015 to 2020. Geographically weighted regression (GWR) modelling was utilized to assess the relationship between air pollutants and weather variables. The spatial representation and average values of geographically varying coefficients showed that the column densities of air pollutants were affected by the meteorological parameters. For example, NO2 was positively associated with temperature in most of the studied regions, with an average geographically varying coefficient value of 0.12 Dobson units (DU, 1 DU = 2.687 × 1016 molecules/cm2), indicating that NO2 concentrations increase by 0.12 DU/year with every unit increase in temperature. The sources of NO2 and SO2 in Dhaka were identified through emission inventory analysis, and transportation and industry emissions were the most significant influencing factors for NO2 and SO2, respectively. Temperature and pressure showed a higher degree of relationship with all four air pollutants compared with other parameters. The results and discussion presented in this study can be of benefit for policy makers in developing air pollution control strategies in Bangladesh.

show abstract

“…As for the Solar Flux, its contribution is significant throughout the year, except during the month of January (Figure 6b). These trends observed in the rainy season are higher than in other periods and could be due to the fact that during this season there is the mechanism of low pressure and lower tropopause height, which may contribute to an increase in the TOC [62], in addition to the possible ODS decrease in the stratosphere. Moreover, it could probably be related to the NOx generated by lightning NOx (LNOx) during the rainy season, which contributes to the photochemical production of ozone in the upper tropospheric-lower stratospheric layer [63].…”

Section: Trend By Monthmentioning

confidence: 78%

Evolution of Ozone above Togo during the 1979–2020 Period

et al. 2022

View full text Add to dashboard Cite

The objective of this paper is to estimate the trend of the Total Ozone Column (TOC) over Togo. A Multi-Sensor Reanalysis-2 (MSR-2) of the TOC over the entire territory of Togo was used. A Multiple Linear Regression (MLR) method has been applied to retrieve the interannual contributions of different forcings and the long-term variability. It was found that the Annual Oscillation (AnO), the Quasi Biennial Oscillation at 30 mb (QBO30), the Solar Flux (SF), and the El Niño–Southern Oscillation (ENSO) has a statistically significant influence on the interannual variability of the TOC. The strongest contribution (22 ± 1.4 DU) is allocated to the AnO while the weakest (<1 DU) is attributed to the Semi-Annual Oscillations (SAnO). Before the peak year of the Equivalent Effective Stratospheric Chlorine (EESC) in the tropics in 1997, the trend is negative (−0.3% ± 0.9% per decade) and is not statistically significant. After the peak year, a statistically significant positive trend is observed. The trend of the TOC is 0.6% ± 0.2% per decade. The monthly TOC trend over Togo is positive and statistically significant during the rainy season (particularly during the monsoon period) except in April, unlike during the harmattan period (DJF), where the trend is not significant.

show abstract

Investigating Contributions of Total Column Ozone Variation on Some Meteorological Parameters in Nigeria

Cited by 4 publications

References 13 publications

Preliminary Investigation of Total Ozone Column and Its Relationship with Atmospheric Variables

Preliminary Investigation of Total Ozone Column and Its Relationship with Atmospheric Variables

Investigating the Relationship between Air Pollutants and Meteorological Parameters Using Satellite Data over Bangladesh

Evolution of Ozone above Togo during the 1979–2020 Period

Contact Info

Product

Resources

About