%0 Journal Article %1 kolaczek2003ninorelated %A Kolaczek, B. %A Nastula, J. %A Salstein, D. %D 2003 %J Journal of Geodynamics %K MyENSOspinWork spin ENSO %N 3 %P 397 - 406 %R https://doi.org/10.1016/S0264-3707(03)00058-9 %T El Nino-related variations in atmosphere–polar motion interactions %U http://www.sciencedirect.com/science/article/pii/S0264370703000589 %V 36 %X The influence of El Nino phenomena on the correlation between atmospheric and geodetic excitation functions of polar motion during four decades, from 1962 to 2000, is studied. These correlations are computed in three different spectral ranges of polar motion variations, namely 90–150, 150–230 and 230–450 days, which include the 120-day, semiannual, and annual oscillations, respectively. These correlation coefficients are variable in all spectra ranges. They are the most stable in the case of the annual oscillation, reaching maxima of about 0.9. In the case of the semiannual oscillation they are more variable, especially before 1970, and they reach maximum values of 0.8–0.9. In the case of the 120-day oscillation, correlation coefficients are the most variable, though more stable after 1980. The disturbances of correlation coefficients between atmospheric and geodetic excitation functions of polar motion are highly correlated with the epochs of El Nino/La Nina phenomena in the most cases, suggesting that during these events, non-atmospheric effects, such as those in the ocean, also have an influence on polar motion.

@article{kolaczek2003ninorelated, abstract = {The influence of El Nino phenomena on the correlation between atmospheric and geodetic excitation functions of polar motion during four decades, from 1962 to 2000, is studied. These correlations are computed in three different spectral ranges of polar motion variations, namely 90–150, 150–230 and 230–450 days, which include the 120-day, semiannual, and annual oscillations, respectively. These correlation coefficients are variable in all spectra ranges. They are the most stable in the case of the annual oscillation, reaching maxima of about 0.9. In the case of the semiannual oscillation they are more variable, especially before 1970, and they reach maximum values of 0.8–0.9. In the case of the 120-day oscillation, correlation coefficients are the most variable, though more stable after 1980. The disturbances of correlation coefficients between atmospheric and geodetic excitation functions of polar motion are highly correlated with the epochs of El Nino/La Nina phenomena in the most cases, suggesting that during these events, non-atmospheric effects, such as those in the ocean, also have an influence on polar motion.}, added-at = {2018-09-17T14:51:55.000+0200}, author = {Kolaczek, B. and Nastula, J. and Salstein, D.}, biburl = {https://www.bibsonomy.org/bibtex/21b1a69f4e66e72e2990ab6866a7f0222/pbett}, description = {El Nino-related variations in atmosphere–polar motion interactions - ScienceDirect}, doi = {https://doi.org/10.1016/S0264-3707(03)00058-9}, interhash = {35a3d6f73fa72d3b34ced5a6075cb9ee}, intrahash = {1b1a69f4e66e72e2990ab6866a7f0222}, issn = {0264-3707}, journal = {Journal of Geodynamics}, keywords = {MyENSOspinWork spin ENSO}, note = {Earth Rotation and Episodic Processes}, number = 3, pages = {397 - 406}, timestamp = {2020-04-15T09:29:49.000+0200}, title = {El Nino-related variations in atmosphere–polar motion interactions}, url = {http://www.sciencedirect.com/science/article/pii/S0264370703000589}, volume = 36, year = 2003 }