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Discussion papers
https://doi.org/10.5194/acp-2019-578
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2019-578
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 17 Jul 2019

Submitted as: research article | 17 Jul 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Chemistry and Physics (ACP).

Observational analysis of the daily cycle of the planetary boundary layer in the central amazon during a typical year and under the influence of the ENSO (GoAmazon project 2014/5)

Rayonil G. Carneiro1 and Gilberto Fisch2 Rayonil G. Carneiro and Gilberto Fisch
  • 1National Institute for Space Research (INPE), Sao José dos Campos, Brazil
  • 2Department of Aerospace Science and Technology, São José dos Campos, Brazil

Abstract. The Amazon biome contains more than half of the remaining tropical forests of the planet and has a strong impact on aspects of meteorology such as the Planetary Boundary Layer (PBL). In this context, the objective of this study was to conduct observational evaluations of the daily cycle of the height of the PLB during its stable (night) and convective (day) phases from data that were measured and/or estimated using instruments such as a radiosonde, SODAR, ceilometer, wind profiler, Lidar and microwave radiometer installed in the central Amazon during 2014 (considered a typical year) and 2015 during which an intense El Niño Southern Oscillation (ENSO) event predominated during the GOAmazon experiment. The results from the four intense observation periods (IOPs) show that during the day and night periods, independent of dry or rainy seasons, the ceilometer is the instrument that best describes the depth of the PBL when compared with in situ radiosonde measurements. Additionally, during the dry season in 2015, the ENSO substantially influenced the growth phase of the PBL, with a 15 % increase in the rate compared to the same period in 2014.

Rayonil G. Carneiro and Gilberto Fisch
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Rayonil G. Carneiro and Gilberto Fisch
Rayonil G. Carneiro and Gilberto Fisch
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Short summary
The objective of this study was to conduct observational evaluations of the daily cycle of the height of the PLB from data that were measured and/or estimated using instruments such as a radiosonde, SODAR, ceilometer, wind profiler, Lidar and microwave radiometer installed in the central Amazon during 2014 (considered a typical year) and 2015 during which an intense El Niño Southern Oscillation (ENSO) event predominated during the GOAmazon experiment.
The objective of this study was to conduct observational evaluations of the daily cycle of the...
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