CloudRoots-Amazon22: Integrating clouds with photosynthesis by crossing scales

J.  Vilà-Guerau de Arellano; O. Hartogensis; H. de Boer; R. Moonen; R. González-Armas; M. Janssens; G.A. Adnew; D.J. Bonell-Fontás; S. Botía; S.P. Jones; H. van Asperen; S. Komiya; V.S. de Feiter; D. Rikkers; S. de Haas; L.A.T. Machado; C.Q. Dias-Junior; G. Giovanelli-Haytzmann; W.I.D. Valenti; R.C. Figueiredo; C.S. Farias; D.H. Hall; A.C.S. Mendonça; F.A.G. da Silva; J.I. Marton da Silva; R. Souza; G. Martins; J.N. Miller; W.B. Mol; B. Heusinkveld; C. van Heerwaarden; F.A.F. D’Oliveira; R.  Rodrigues Ferreira; R.  Acosta Gotuzzo; G. Pugliese; J. Williams; A. Ringsdorf; A. Edtbauer; C.A. Quesada; B.  Takeshi Tanaka Portela; E.  Gomes Alves; C. Pöhlker; S. Trumbore; J. Lelieveld; T. Röckmann

doi:10.1175/BAMS-D-23-0333.1

CloudRoots-Amazon22: Integrating clouds with photosynthesis by crossing scales

J. Vilà-Guerau de Arellano^*, O. Hartogensis, H. de Boer, R. Moonen, R. González-Armas, M. Janssens, G.A. Adnew, D.J. Bonell-Fontás, S. Botía, S.P. Jones, H. van Asperen, S. Komiya, V.S. de Feiter, D. Rikkers, S. de Haas, L.A.T. Machado, C.Q. Dias-Junior, G. Giovanelli-Haytzmann, W.I.D. Valenti, R.C. FigueiredoC.S. Farias, D.H. Hall, A.C.S. Mendonça, F.A.G. da Silva, J.I. Marton da Silva, R. Souza, G. Martins, J.N. Miller, W.B. Mol, B. Heusinkveld, C. van Heerwaarden, F.A.F. D’Oliveira, R. Rodrigues Ferreira, R. Acosta Gotuzzo, G. Pugliese, J. Williams, A. Ringsdorf, A. Edtbauer, C.A. Quesada, B. Takeshi Tanaka Portela, E. Gomes Alves, C. Pöhlker, S. Trumbore, J. Lelieveld, T. Röckmann

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

How are rainforest photosynthesis and turbulent fluxes influenced by clouds? To what extent are clouds affected by local processes driven by rainforest energy, water and carbon fluxes? These interrelated questions were the main drivers of the intensive field experiment CloudRoots-Amazon22 which took place at the ATTO/Campina supersites in the Amazon rainforest during the dry season, in August 2022. CloudRoots-Amazon22 collected observational data to derive cause-effect relationships between processes occurring at the leaf-level up to canopy scales in relation to the diurnal evolution of the clear-to-cloudy transition. First, we studied the impact of cloud and canopy radiation perturbations on the sub-diurnal variability of stomatal conductance. Stoma opening is larger in the morning, modulated by the cloud optical thickness. Second, we combined 1 Hz-frequency measurements of the stable isotopologues of carbon dioxide and water vapor with measurements of turbulence to determine carbon dioxide and water vapor sources and sinks within the canopy. Using scintillometer observations, we inferred 1-minute sensible heat flux that responded within minutes to the cloud passages. Third, collocated profiles of state variables and greenhouse gases enabled us to determine the role of clouds in vertical transport. We then inferred, using canopy and upper-atmospheric observations and a parameterization, the cloud cover and cloud mass flux to establish causality between canopy and cloud processes. This shows the need of comprehensive observational set to improve weather and climate model representations. Our findings contribute to advance our knowledge of the coupling between cloudy boundary layers and primary carbon productivity of the Amazon rainforest.

Original language	English
Pages (from-to)	E1275–E1302
Journal	Bulletin of the American Meteorological Society
Volume	105
Issue number	7
DOIs	https://doi.org/10.1175/BAMS-D-23-0333.1
Publication status	Published - 1 Jul 2024

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Vilà-Guerau de Arellano, J., Hartogensis, O., de Boer, H., Moonen, R., González-Armas, R., Janssens, M., Adnew, G. A., Bonell-Fontás, D. J., Botía, S., Jones, S. P., van Asperen, H., Komiya, S., de Feiter, V. S., Rikkers, D., de Haas, S., Machado, L. A. T., Dias-Junior, C. Q., Giovanelli-Haytzmann, G., Valenti, W. I. D., ... Röckmann, T. (2024). CloudRoots-Amazon22: Integrating clouds with photosynthesis by crossing scales. Bulletin of the American Meteorological Society, 105(7), E1275–E1302. https://doi.org/10.1175/BAMS-D-23-0333.1

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title = "CloudRoots-Amazon22: Integrating clouds with photosynthesis by crossing scales",

abstract = "How are rainforest photosynthesis and turbulent fluxes influenced by clouds? To what extent are clouds affected by local processes driven by rainforest energy, water and carbon fluxes? These interrelated questions were the main drivers of the intensive field experiment CloudRoots-Amazon22 which took place at the ATTO/Campina supersites in the Amazon rainforest during the dry season, in August 2022. CloudRoots-Amazon22 collected observational data to derive cause-effect relationships between processes occurring at the leaf-level up to canopy scales in relation to the diurnal evolution of the clear-to-cloudy transition. First, we studied the impact of cloud and canopy radiation perturbations on the sub-diurnal variability of stomatal conductance. Stoma opening is larger in the morning, modulated by the cloud optical thickness. Second, we combined 1 Hz-frequency measurements of the stable isotopologues of carbon dioxide and water vapor with measurements of turbulence to determine carbon dioxide and water vapor sources and sinks within the canopy. Using scintillometer observations, we inferred 1-minute sensible heat flux that responded within minutes to the cloud passages. Third, collocated profiles of state variables and greenhouse gases enabled us to determine the role of clouds in vertical transport. We then inferred, using canopy and upper-atmospheric observations and a parameterization, the cloud cover and cloud mass flux to establish causality between canopy and cloud processes. This shows the need of comprehensive observational set to improve weather and climate model representations. Our findings contribute to advance our knowledge of the coupling between cloudy boundary layers and primary carbon productivity of the Amazon rainforest.",

author = "{Vil{\`a}-Guerau de Arellano}, J. and O. Hartogensis and {de Boer}, H. and R. Moonen and R. Gonz{\'a}lez-Armas and M. Janssens and G.A. Adnew and D.J. Bonell-Font{\'a}s and S. Bot{\'i}a and S.P. Jones and {van Asperen}, H. and S. Komiya and {de Feiter}, V.S. and D. Rikkers and {de Haas}, S. and L.A.T. Machado and C.Q. Dias-Junior and G. Giovanelli-Haytzmann and W.I.D. Valenti and R.C. Figueiredo and C.S. Farias and D.H. Hall and A.C.S. Mendon{\c c}a and {da Silva}, F.A.G. and {Marton da Silva}, J.I. and R. Souza and G. Martins and J.N. Miller and W.B. Mol and B. Heusinkveld and {van Heerwaarden}, C. and F.A.F. D{\textquoteright}Oliveira and {Rodrigues Ferreira}, R. and {Acosta Gotuzzo}, R. and G. Pugliese and J. Williams and A. Ringsdorf and A. Edtbauer and C.A. Quesada and {Takeshi Tanaka Portela}, B. and {Gomes Alves}, E. and C. P{\"o}hlker and S. Trumbore and J. Lelieveld and T. R{\"o}ckmann",

year = "2024",

month = jul,

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doi = "10.1175/BAMS-D-23-0333.1",

language = "English",

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pages = "E1275–E1302",

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publisher = "American Meteorological Society",

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Vilà-Guerau de Arellano, J , Hartogensis, O, de Boer, H, Moonen, R, González-Armas, R, Janssens, M, Adnew, GA, Bonell-Fontás, DJ, Botía, S, Jones, SP, van Asperen, H, Komiya, S, de Feiter, VS, Rikkers, D, de Haas, S, Machado, LAT, Dias-Junior, CQ, Giovanelli-Haytzmann, G, Valenti, WID, Figueiredo, RC, Farias, CS, Hall, DH, Mendonça, ACS, da Silva, FAG, Marton da Silva, JI, Souza, R, Martins, G, Miller, JN, Mol, WB , Heusinkveld, B , van Heerwaarden, C, D’Oliveira, FAF, Rodrigues Ferreira, R, Acosta Gotuzzo, R, Pugliese, G, Williams, J, Ringsdorf, A, Edtbauer, A, Quesada, CA, Takeshi Tanaka Portela, B, Gomes Alves, E, Pöhlker, C, Trumbore, S, Lelieveld, J & Röckmann, T 2024, 'CloudRoots-Amazon22: Integrating clouds with photosynthesis by crossing scales', Bulletin of the American Meteorological Society, vol. 105, no. 7, pp. E1275–E1302. https://doi.org/10.1175/BAMS-D-23-0333.1

TY - JOUR

T1 - CloudRoots-Amazon22: Integrating clouds with photosynthesis by crossing scales

AU - Vilà-Guerau de Arellano, J.

AU - Hartogensis, O.

AU - de Boer, H.

AU - Moonen, R.

AU - González-Armas, R.

AU - Janssens, M.

AU - Adnew, G.A.

AU - Bonell-Fontás, D.J.

AU - Botía, S.

AU - Jones, S.P.

AU - van Asperen, H.

AU - Komiya, S.

AU - de Feiter, V.S.

AU - Rikkers, D.

AU - de Haas, S.

AU - Machado, L.A.T.

AU - Dias-Junior, C.Q.

AU - Giovanelli-Haytzmann, G.

AU - Valenti, W.I.D.

AU - Figueiredo, R.C.

AU - Farias, C.S.

AU - Hall, D.H.

AU - Mendonça, A.C.S.

AU - da Silva, F.A.G.

AU - Marton da Silva, J.I.

AU - Souza, R.

AU - Martins, G.

AU - Miller, J.N.

AU - Mol, W.B.

AU - Heusinkveld, B.

AU - van Heerwaarden, C.

AU - D’Oliveira, F.A.F.

AU - Rodrigues Ferreira, R.

AU - Acosta Gotuzzo, R.

AU - Pugliese, G.

AU - Williams, J.

AU - Ringsdorf, A.

AU - Edtbauer, A.

AU - Quesada, C.A.

AU - Takeshi Tanaka Portela, B.

AU - Gomes Alves, E.

AU - Pöhlker, C.

AU - Trumbore, S.

AU - Lelieveld, J.

AU - Röckmann, T.

PY - 2024/7/1

Y1 - 2024/7/1

N2 - How are rainforest photosynthesis and turbulent fluxes influenced by clouds? To what extent are clouds affected by local processes driven by rainforest energy, water and carbon fluxes? These interrelated questions were the main drivers of the intensive field experiment CloudRoots-Amazon22 which took place at the ATTO/Campina supersites in the Amazon rainforest during the dry season, in August 2022. CloudRoots-Amazon22 collected observational data to derive cause-effect relationships between processes occurring at the leaf-level up to canopy scales in relation to the diurnal evolution of the clear-to-cloudy transition. First, we studied the impact of cloud and canopy radiation perturbations on the sub-diurnal variability of stomatal conductance. Stoma opening is larger in the morning, modulated by the cloud optical thickness. Second, we combined 1 Hz-frequency measurements of the stable isotopologues of carbon dioxide and water vapor with measurements of turbulence to determine carbon dioxide and water vapor sources and sinks within the canopy. Using scintillometer observations, we inferred 1-minute sensible heat flux that responded within minutes to the cloud passages. Third, collocated profiles of state variables and greenhouse gases enabled us to determine the role of clouds in vertical transport. We then inferred, using canopy and upper-atmospheric observations and a parameterization, the cloud cover and cloud mass flux to establish causality between canopy and cloud processes. This shows the need of comprehensive observational set to improve weather and climate model representations. Our findings contribute to advance our knowledge of the coupling between cloudy boundary layers and primary carbon productivity of the Amazon rainforest.

AB - How are rainforest photosynthesis and turbulent fluxes influenced by clouds? To what extent are clouds affected by local processes driven by rainforest energy, water and carbon fluxes? These interrelated questions were the main drivers of the intensive field experiment CloudRoots-Amazon22 which took place at the ATTO/Campina supersites in the Amazon rainforest during the dry season, in August 2022. CloudRoots-Amazon22 collected observational data to derive cause-effect relationships between processes occurring at the leaf-level up to canopy scales in relation to the diurnal evolution of the clear-to-cloudy transition. First, we studied the impact of cloud and canopy radiation perturbations on the sub-diurnal variability of stomatal conductance. Stoma opening is larger in the morning, modulated by the cloud optical thickness. Second, we combined 1 Hz-frequency measurements of the stable isotopologues of carbon dioxide and water vapor with measurements of turbulence to determine carbon dioxide and water vapor sources and sinks within the canopy. Using scintillometer observations, we inferred 1-minute sensible heat flux that responded within minutes to the cloud passages. Third, collocated profiles of state variables and greenhouse gases enabled us to determine the role of clouds in vertical transport. We then inferred, using canopy and upper-atmospheric observations and a parameterization, the cloud cover and cloud mass flux to establish causality between canopy and cloud processes. This shows the need of comprehensive observational set to improve weather and climate model representations. Our findings contribute to advance our knowledge of the coupling between cloudy boundary layers and primary carbon productivity of the Amazon rainforest.

U2 - 10.1175/BAMS-D-23-0333.1

DO - 10.1175/BAMS-D-23-0333.1

M3 - Article

SN - 0003-0007

VL - 105

SP - E1275–E1302

JO - Bulletin of the American Meteorological Society

JF - Bulletin of the American Meteorological Society

IS - 7

ER -

CloudRoots-Amazon22: Integrating clouds with photosynthesis by crossing scales

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