%0 Journal Article %@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S} %@nexthigherunit 8JMKD3MGPCW/3EU29DP 8JMKD3MGPCW/3EUFCFP %X The prediction of solar activity strength for solar cycles 24 and 25 is made on the basis of extrapolation of sunspot number spectral components. Monthly sunspot number data during the 18502007 interval (solar cycles 923) are decomposed into several levels and searched for periodicities by iterative regression in each level. For solar cycle 24, the peak is predicted in November 2013 with a sunspot number of 113.3. The cycle is expected to be weak, with a length of 133 mo (months) or 11.1 yr. The sunspot number maximum in cycle 25 is predicted to occur in April 2023 with a sunspot number 132.1 and a solar cycle length of 118 mo or 9.8 yr. Thus, solar cycle 24 is predicted to have an intensity 23% lower than cycle 23, and cycle 25 will be 5% lower than cycle 23. %@mirrorrepository sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53 %8 Jul %N 11-12 %T Prediction of sunspot number amplitude and solar cycle length for cycles 24 and 25 %@secondarytype PRE PI %K Prediction solar activity Sunspot number time series Spectral analysis Multiresolution analysis. %@archivingpolicy denypublisher denyfinaldraft24 %@usergroup administrator %@usergroup marciana %@usergroup tereza@sid.inpe.br %@group CRS-CCR-INPE-MCT-BR %@group DGE-CEA-INPE-MCT-BR %@group %@group DGE-CEA-INPE-MCT-BR %@group DGE-CEA-INPE-MCT-BR %@e-mailaddress tereza@sid.inpe.br %3 sdarticle.pdf %@secondarykey INPE--PRE/ %@issn 1364-6826 %2 sid.inpe.br/mtc-m19/2011/02.15.11.55.47 %@affiliation Instituto Nacional de Pesquisas Espaciais (INPE) %@affiliation Instituto Nacional de Pesquisas Espaciais (INPE) %@affiliation Laborato´rio de Radioecologia e Mudanc-as Globais / Departamento de Biofý %@affiliation ´sica e Biometria da Universidade do Estado do Rio de Janeiro %@affiliation Instituto Nacional de Pesquisas Espaciais (INPE) %@project CNPq[151609/2009-8, 200752533-1, PQ 300211/2008-2] %B Journal of Atmospheric and Solar-Terrestrial Physics %@versiontype publisher %P 1294-1299 %4 sid.inpe.br/mtc-m19/2011/02.15.11.55 %@documentstage not transferred %D 2011 %V 73 %@doi 10.1016/j.jastp.2010.09.005 %A Rigozo, N. R., %A Echer, M. P. Souza, %A Evangelista, H., %A Nordemann, D. J. R., %A Echer, E., %@dissemination WEBSCI; PORTALCAPES; AGU; MGA; COMPENDEX. %@area CEA