Spatiotemporal structures of rainfall over the Amazon basin derived from TRMM data

摘要: On the basis of Tropical Rainfall Measuring Mission (TRMM) daily accumulated rainfall data (3B42 v7 product) covering 16 years (1998–2013), Amazon Basin (AB) time and space variability is analysed. Different behaviours precipitation over AB are found to north south 8°S when longitudinal band 70°–50°W considered. The sample then split into northern southern sectors with respect 8°S, describing their monthly evolution as a function longitude. main spatial oscillation modes isolated analysed through continuous wavelet transform analysis. Intense oscillations close western side studied region. Several temporal in different scales detected within each sample. Two them show longer than 12 months, which probably associated ENSO phases. Smaller scale oscillations, evaluated from data, also found. sector shows more one seems be affected by large processes sector.