Global Trends in the Occurrence and Characteristics of Blocking Anticylones Using Sen Innovative Trend Analysis †
1
Department of Meteorological Engineering, University of Samsun, 19 Mayis, 55420 Samsun, Turkey
2
Atmospheric Science Program, University of Missouri, 302 E ABNR, Columbia, MO 65211, USA
*
Author to whom correspondence should be addressed.
†
Presented at the 4th International Electronic Conference on Atmospheric Sciences, 16–31 July 2021; Available online: https://ecas2021.sciforum.net .
Environ. Sci. Proc. 2021, 8(1), 41; https://doi.org/10.3390/ecas2021-10700
Published: 22 July 2021
(This article belongs to the Proceedings of The 4th International Electronic Conference on Atmospheric Sciences)
Abstract
:Atmospheric blocking plays an important role in modulating mid-latitude weather, in particular in the Northern Hemisphere (NH). Trend analysis of atmospheric blocking for both hemispheres by using Şen’s Innovative Trend Analysis (ITA) is performed in this study. The blocking data archived in the University of Missouri covers the period of 1968–2019 for the NH and 1970–2019 for the Southern Hemisphere is used in the study. Block occurrence, duration and blocking intensity (BI) is analysed by classifying the NH (and SH) into three groups according to the preferred blocking locations: Atlantic, Pacific and Continental (Atlantic, Pacific and Indian). In the NH, blocking intensity showed mixed results. It showed a decreasing trend for the entire hemisphere and Atlantic Region, whilst a different trend was shown for different BI clusters. For blocking numbers and duration, the entire hemisphere and regions showed increasing trends. These increasing trend values were also statistically significant. In the SH, blocking intensity showed a decreasing trend for low clusters, whilst medium and high cluster increased for the entire hemisphere. Block duration showed an increasing trend for the entire SH. Block numbers showed increasing trends, except for one point in the low cluster. Blocking characteristics showed different trends for different preferred blocking locations. Increasing trends of blocking numbers for the overall SH and Pacific region are statistically significant at 95% level. Increasing trends of blocking duration for the overall SH, Atlantic and Pacific region are statistically significant at 90%, 95% and 95% level, respectively.
Supplementary Materials
The poster presentation is available online at https://www.mdpi.com/article/10.3390/ecas2021-10700/s1.
Author Contributions
Conceptualization, B.E.; methodology, B.E. and A.R.L.; software, both; validation, both; formal analysis, B.E.; investigation, both; resources, both; data curation, both; writing—original draft preparation, A.R.L.; writing—review and editing, both; visualization, B.E.; supervision, N/A; project administration, both; funding acquisition, N/A. All authors have read and agreed to the published version of the manuscript.
Funding
This research received no external funding.
Institutional Review Board Statement
Not applicable.
Informed Consent Statement
Not applicable.
Data Availability Statement
Global Climate Change Group, University of Missouri; http://weather.missouri.edu/gcc (assessed on 16 March 2021).
Acknowledgments
The authors acknowledge the time and efforts of the outside reviewers and editors.
Conflicts of Interest
The authors declare no conflict of interest.
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MDPI and ACS Style
Efe, B.; Lupo, A.R. Global Trends in the Occurrence and Characteristics of Blocking Anticylones Using Sen Innovative Trend Analysis. Environ. Sci. Proc. 2021, 8, 41. https://doi.org/10.3390/ecas2021-10700
AMA Style
Efe B, Lupo AR. Global Trends in the Occurrence and Characteristics of Blocking Anticylones Using Sen Innovative Trend Analysis. Environmental Sciences Proceedings. 2021; 8(1):41. https://doi.org/10.3390/ecas2021-10700
Chicago/Turabian StyleEfe, Bahtiyar, and Anthony R. Lupo. 2021. "Global Trends in the Occurrence and Characteristics of Blocking Anticylones Using Sen Innovative Trend Analysis" Environmental Sciences Proceedings 8, no. 1: 41. https://doi.org/10.3390/ecas2021-10700
