CONNECTION BETWEEN PERIOD OF LOW-FREQUENCY COMPONENT WOLF'S NUMBERS (WNS) AND LENGTH OF WOLF'S NUMBERS SERIES
Journal Title: Aerospace Research in Bulgaria - Year 2017, Vol 29, Issue
Abstract
The long-period component of Sun's activity and Gleissberg cycle are in focus of this work. The main reason is they affect daily life on Earth, for instance minimum and maximum ages change each other. For the last 60 years, many researchers have been considering that period of Gleissberg cycle limit is 80 and 110 years. Some of them consider 88 years specifically. Different researchers were analyzing WNS in different time, so they had different row length. It makes sense to analyze dependence between WNS length and period of approximation sine of low-frequency component Wolf's numbers. Monthly Wolf number since 1749 is analyzed, the shortest part of WNS includes 18 cycles (from 1749 to 1954.37) and the longest line includes a part of a cycle No 24 (1749-2014.376). It's noticed that during increasing WNS's length, sine approximation period also increases from 84 years up to 110 years. The eighty eight years period appears at several conditions. Because of increasing period of approximation sine it's rather difficult to extrapolate sine at the future time. It should be noticed that in case of analyzing part of WNS since 1849÷2015 a reliable part, period of sine approximation equals 150 years. The problem concerning matching reliable part of WNS and reconstructed part remains open.
Authors and Affiliations
Alexander Shibaev
Keywords
Related Articles
- EP ID EP281427
- DOI 10.7546/AeReBu.29.18.01.01
- Views 62
- Downloads 0
SATELLITE SENSORS USED IN THERMAL REMOTE SENSING
The presented article makes an overview of the most used contemporary satellite remote sensing missions operating in the thermal range of the electromagnetic spectrum. Discussed are the main environmental app...
CONNECTION BETWEEN PERIOD OF LOW-FREQUENCY COMPONENT WOLF'S NUMBERS (WNS) AND LENGTH OF WOLF'S NUMBERS SERIES
The long-period component of Sun's activity and Gleissberg cycle are in focus of this work. The main reason is they affect daily life on Earth, for instance minimum and maximum ages change each other. For the las...
HIGH SPEED SOLAR WIND STREAMS OVER THE LAST FOUR SOLAR CYCLES
Studying the high speed solar wind streams (HSS) behavior over the course of a solar cycle (SC) can give a valuable knowledge about solar activity. Using the experimental data for the solar wind parameters...
EXTENDED CATEGORISATION OF GROUND LEVEL ENHANCEMENTS (GLEs) OF COSMIC RAYS DUE TO RELATIVISTIC SOLAR ENERGETIC PARTICLES
The ground level enhancements (GLEs) due to solar cosmic rays (SCRs) are significant for a number of planetary processes on the Earth. The solar particles are the key for understanding of solar-terrestrial relations and...
ONBOARD DIGITAL BLOCK FOR ELECTRIC FIELD MEASUREMENTS IN SPACE
The article presents a Bulgarian digital block in a Bulgarian device – Analog Measurement of Electric Fields-Wide Band (AMEF-WB). This on-board instrument with 4 sensors was developed to measure electric fields in a wide...