Article: Analysis of cedar pollen time series: no evidence of low-dimensional chaotic behavior.
International journal of biometeorology
2006 Volume 50, Issue 3, Page(s) 154–158
Abstract: Much of the current interest in pollen time series analysis is motivated by the possibility that pollen series arise from low-dimensional chaotic systems. If this is the case, short-range prediction using nonlinear modeling is justified and would produce ...
| Abstract | Much of the current interest in pollen time series analysis is motivated by the possibility that pollen series arise from low-dimensional chaotic systems. If this is the case, short-range prediction using nonlinear modeling is justified and would produce high-quality forecasts that could be useful in providing pollen alerts to allergy sufferers. To date, contradictory reports about the characterization of the dynamics of pollen series can be found in the literature. Pollen series have been alternatively described as featuring and not featuring deterministic chaotic behavior. We showed that the choice of test for detection of deterministic chaos in pollen series is difficult because pollen series exhibit [see text] power spectra. This is a characteristic that is also produced by colored noise series, which mimic deterministic chaos in most tests. We proposed to apply the Ikeguchi-Aihara test to properly detect the presence of deterministic chaos in pollen series. We examined the dynamics of cedar (Cryptomeria japonica) hourly pollen series by means of the Ikeguchi-Aihara test and concluded that these pollen series cannot be described as low-dimensional deterministic chaos. Therefore, the application of low-dimensional chaotic deterministic models to the prediction of short-range pollen concentration will not result in high-accuracy pollen forecasts even though these models may provide useful forecasts for certain applications. We believe that our conclusion can be generalized to pollen series from other wind-pollinated plant species, as wind speed, the forcing parameter of the pollen emission and transport, is best described as a nondeterministic series that originates in the high dimensionality of the atmosphere. |
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| MeSH term(s) | Cryptomeria ; Models, Theoretical ; Nonlinear Dynamics ; Pollen ; Wind |
| Language | English |
| Publishing date | 2006-01 |
| Publishing country | United States |
| Document type | Journal Article |
| ZDB-ID | 280324-0 |
| ISSN | 1432-1254 ; 0020-7128 |
| ISSN (online) | 1432-1254 |
| ISSN | 0020-7128 |
| DOI | 10.1007/s00484-005-0004-9 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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