Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8141450 | New Astronomy | 2017 | 8 Pages |
Abstract
The time series of sunspot number and the precipitation in the north-central China (108° ⼠115° E, 33° ⼠41° N) over the past 500 years (1470-2002) are investigated, through periodicity analysis, cross wavelet transform and ensemble empirical mode decomposition analysis. The results are as follows: the solar activity periods are determined in the precipitation time series of weak statistical significance, but are found in decomposed components of the series with statistically significance; the Quasi Biennial Oscillation (QBO) is determined to significantly exist in the time series, and its action on precipitation is opposite to the solar activity; the sun is inferred to act on precipitation in two ways, with one lagging the other by half of the solar activity period.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Astronomy and Astrophysics
Authors
Qian Zhai,