Spectral analysis approach to study the association between total ozone concentration and surface temperature

Chattopadhyay, Goutami; Chattopadhyay, Surajit

doi:10.1007/s13762-020-02763-4

Cited by 9 publications

(3 citation statements)

References 34 publications

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“…The temperature dependence observed in different seasons is different. So, it is practically impossible to isolate and establish any single temperature dependence from this distribution (although such attempts are made in some publications, for example [26]).…”

Section: Temperature Dependence Of Daily Ozone Productionmentioning

confidence: 99%

Data parallel processing in block streams for analysis of long-term series of ozone content in ground atmosphere

Stepanov¹

2022

Laser Phys.

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The article describes a new approach to the processing of long series of ozone monitoring data in the surface atmosphere called the Data Parallel Processing in Block Streams. The proposed method is based on splitting of a sequential series of initial data into blocks filled with surface ozone monitoring data for one day. Further, a chain is formed from such blocks, the length of which is determined by the total length of the monitoring process. Along this chain of blocks, parallel processing of the initial data is carried out, aimed at smoothing out fast fluctuations. The smoothed data is then used to determine the daily production of ozone due to photochemical reactions, its minimum nighttime levels, as well as the magnitude of nighttime maxima. The possibilities of the proposed approach are demonstrated using the analysis of surface ozone monitoring data in Moscow, Russia, in 2020. The prospects for further application of the developed method are discussed.

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Section: Temperature Dependence Of Daily Ozone Productionmentioning

confidence: 99%

Data parallel processing in block streams for analysis of long-term series of ozone content in ground atmosphere

Stepanov¹

2022

Laser Phys.

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“…The highest concentrations of ozone at the surface of the Earth occur in spring and summer, outside the city or suburbs. The release of ozone precursors into the atmosphere is mostly the effect of industrialization and other anthropogenic sources (i.e., vehicle traffic and combustion processes) [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Ozone Concentration Levels in Urban Environments—Upper Silesia Region Case Study

Kobza

Geremek

Dul

2021

IJERPH

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Although ozone (O3) plays a crucial role in screening the Earth’s surface and lower atmosphere layers from the ultraviolet radiation, troposphere ozone is proven to have negative health effects on the human body and is one of the greenhouse gases. The objective of this study was to perform a measurement-based assessment for determining whether the concentration of ozone is within admissible limits, or exceeded, in Silesia Province and does not pose a threat to the local population. The data provided by the Voivodship Inspectorate for Environmental Protection in Katowice were used in the analysis. The received data constitute the result of 8-h measurements of concentrations of ozone at selected air monitoring stations of the Silesian province. The locations of three monitoring stations were found to be useful for the aim of this research; one site is situated in a rural background area; another one is located in a medium-sized city and the Katowice station is representative for an urban background situation. We used cluster analysis, weighted pair group method using arithmetic averages (WPGMA) and Chebyshev distances to test the hypothesis and compare empirical distributions in the general population. The alarm level has not been exceeded in indicated measurements stations in Silesian Voivodship in the period 2015–2017 (averaging time 1 h: 240 µg/m3 for 3 h). The target level was exceeded in 2015 at all three measurements stations and in the following years at one station (in Zloty Potok, 2016, and in Katowice, 2017). Each year, the largest number of exceedances occurred in August. The results clearly indicate a lack of hazards for the general population’s health in terms of increased concentrations of ozone in the city centers and outside. The results confirm that environmental conditions (i.e., landform, the area surrounding monitoring station) have a significant influence on the ozone level.

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“…Several such methods have been used they are Rescaled Range Analysis (R/S), Wavelet Techniques (WT), Artificial Neural Networking and Detrended Fluctuation Analysis (DFA) and many others. A detailed study by Chattopadhyay and Chattopadhyay (2020) on association between Total Column Ozone (TCO) and Surface Temperature (ST) over Kolkata during the time period of September-November through spectral analysis approach reveal that TOC exhibits lower degree of variability than ST but there is an apparent similarity in the basic pattern of the spectra of TOC and ST. Varotsos (2005) in his study of power law correlations in column ozone over Antarctica applied DFA on springtime daily column ozone edge and into the Antarctic column ozone hole. The literature reports extreme column ozone fluctuations obey a power-law with exponents, implying that large fluctuations are more likely to occur into the ozone hole than at its edge.…”

Section: Introductionmentioning

confidence: 99%

A probe into the Multifractal Behaviour of Total Ozone Time Series through Detrended Fluctuation Analysis

Chakraborty¹,

Chattopadhyay²

2021

Preprint

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The present study reports a multifractal detrended fluctuation analysis of total ozone time series. Considering daily total ozone concentration (TOC) data ranging from 2015 to 2019, we have created a new profile by subtracting the trend. Subsequently we have divided the profile \({X}_{i}\) into non intersecting segments of equal time scale varying from 25 to 30. Fitting a second order polynomial, we have eliminated the local trend from each segment and thereafter we have computed the detrended variance. Finally the multifractal behaviour has been identified and the singularity spectra has helped us in obtaining the generalised Hurst exponent which in this case has come out to be greater than 0.5.

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Spectral analysis approach to study the association between total ozone concentration and surface temperature

Cited by 9 publications

References 34 publications

Data parallel processing in block streams for analysis of long-term series of ozone content in ground atmosphere

Data parallel processing in block streams for analysis of long-term series of ozone content in ground atmosphere

Ozone Concentration Levels in Urban Environments—Upper Silesia Region Case Study

A probe into the Multifractal Behaviour of Total Ozone Time Series through Detrended Fluctuation Analysis

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