WALTER MORINOBU NAKAEMA
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Resumo IPEN-doc 23282 Estimation in situ of extinction coefficient of particles using Cavity Ring-Down Spectrometer2016 - NAKEMA, WALTER M.; HAO, ZUOQIANG; LOPES, FABIO J.S.; LANDULFO, EDUARDOLidar measurements present limitation regarding to the determination of extinction coefficient on the surface (where most aerosol particles are concentrated) due to geometrical issues and overlap functions. An attempt to overcome these feature, it is purposed an approach using a Cavity Ring-Down Spectrometer (CRDS) for monitoring in situ the optical properties of aerosols in a continuous visible-range between 630 and 650 nm. The CRDS is a very sensitive and calibration-free direct absorption spectroscopic technique that provides absolute values of optical extinction by samples that scatter and absorb light. Simultaneous measurements of scattering and extinction coefficients were performed by an elastic lidar in order to compare the respective magnitude of values.Resumo IPEN-doc 17685 Supercontinuum generation in a sapphire fiber and comparison with a compact PCF based light source2011 - NAKAEMA, WALTER M.; HAO, ZUO-GIANG; ROHWETTER, PHILLIPP; LANDULFO, EDUARDO; WOSTE, LUDGER; STELMASZCZK, KAMILResumo IPEN-doc 19746 Direct determination of surface aerosol extinction coefficient using a cavity ring-down apparatus in a continuous 665-675 num band2013 - NAKAEMA, WALTER M.; BOURAYOU, RIAD; ARAUJO, FELIPE V.; LARROZA, ELIANE G.; LANDULFO, EDUARDO; LOPES, FABIO J.S.Resumo IPEN-doc 19742 Fallback atmosphere models for Lidar measurements without corresponding radio-sounding data and modeling of a local atmosphere model from historic radio-sounding data. Example of the São Paulo lidar Metropolitan Station2013 - BOURAYOU, RIAD; LOPES, FABIO J. da S.; COSTA, RENATA F. da; FERRINI, PATRICIA R.; LOROZA, ELIANE G.; NAKAEMA, WALTER M.; MOREIRA, GREGORI A.; ARAUJO, FELIPE V.; POLUHA, BRUNO; LANDULFO, EDUARDOResumo IPEN-doc 19741 Cirrus cloud case study over São Paulo city using lidar associated with determination of tropopause height2013 - LOROZA, ELIANE G.; CAMARGO, RICARDO de; CAMPOS, JOSE P.S.; NAKAEMA, WALTER M.; BOURAYOU, RIAD; LANDULFO, EDUARDO; HOAREAU, CHRISTOPHE; DIONISI, DAVIDE; KECKHUT, PHILIPPEResumo IPEN-doc 19739 Study of long-range transportation of biomass burning event during the winter of 2010 in the Metropolitan region of São Paulo - Brazil using Lidar. AERONET and CALIPSO satellite2013 - ARAUJO, FELIPE V.; LANDULFO, EDUARDO; NAKAEMA, WALTER M.; LOPES, FABIO J.S.Resumo IPEN-doc 19737 ALINE network status2013 - LANDULFO, EDUARDO; LOPES, FABIO J. da S.; NAKAEMA, WALTER M.; LARROZA, ELIANE G.; ARAUJO, FELIPE V.; RODRIGUES, PATRICIA F.; RISTORI, PABLO; OTERO, LIDIA; PALLOTTA, JUAN; PAWELKO, EZEQUIEL; CHOUZA, FERNANDO; QUEL, EDUARDO; FORNO, R.; SANCHEZ, MARIA F.; CALDERON, FERNANDO; BARBOSA, HENRIQUE; GOUVEIA, DIEGO A.; ARTAXO, PAULO; MONTILLA, E.; SILVA, ANTONIETA; JIMENEZ, C.; SAAVEDRA, CALOS; HERNANDEZ, ROLANDO; ARREDONDO, RENE E.; GONZALEZ, BORIS B.; BRUNETA, CARLOS E.H.; SANCHEZ, JUAN C.A.; MARRERO, JUAN C.A.; GUSTIN, ALVARO B.; TOLEDO, DANIEL N.; BEDOYA, ANDRES; ALEGRIA, DAIRO; MUNERA, MAURICIO; WHITEMAN, DAVID