Comparison of PBL heights from ceilometer measurements and greenhouse gases concentrations in São Paulo
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This paper presents a study conducted in São Paulo, Brazil, where the planetary boundary
layer height (PBLH) was determined using ceilometer data and the wavelet covariance transform
method. The retrieved PBLH values were subsequently compared with the concentrations of CO2 and
CH4 measured at three distinct experimental sites in the city. The period of study was July 2021. This
study also included a comparison between ceilometer data and lidar data, which demonstrated the
favorable applicability of the ceilometer data for PBLH estimation. An examination of the correlation
between changes in average CO2 concentrations and PBLH values revealed stronger correlations for
the IAG and UNICID stations, with correlation coefficients (ρ) of approximately −0.86 and −0.85,
respectively, in contrast to the Pico do Jaraguá station, which exhibited a lower correlation coefficient
of −0.42. When assessing changes in CH4 concentrations against variations in PBL height, the
retrieved correlation coefficients were approximately −0.78 for IAG, −0.66 for UNICID, and −0.38 for
Pico do Jaraguá. The results indicated that CO2/CH4 concentrations are negatively correlated with
PBL heights, with CO2 concentrations showing more significant correlation than CH4
. Additionally,
among the three measurement stations, IAG measurements displayed the most substantial correlation.
The results from this study contribute to the understanding of the relationship between PBLH and
greenhouse gas concentrations, emphasizing the potential of remote sensing systems like ceilometers
in monitoring and studying atmospheric processes.
Como referenciar
SANTOS, AMANDA V. dos; ARAUJO, ELAINE C.; ANDRADE, IZABEL da S.; CORREA, THAIS; MARQUES, MARCIA T.A.; SOUTO-OLIVEIRA, CARLOS E.; LEONARDO, NOELE F.; MACEDO, FERNANDA de M.; SOUZA, GIOVANNI; LOPES, PEROLA P. de Q.; MOREIRA, GREGORI de A.; ANDRADE, MARIA de F.; LANDULFO, EDUARDO. Comparison of PBL heights from ceilometer measurements and greenhouse gases concentrations in São Paulo. Atmosphere, v. 14, n. 12, p. 1-18, 2023. DOI: 10.3390/atmos14121830. Disponível em: https://repositorio.ipen.br/handle/123456789/47862. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.