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Showing 1 to 8 of 8 entries
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Solar eclipse demonstrating the importance of photochemistry in new particle formation.

Scientific reports

Jokinen T, Kontkanen J, Lehtipalo K, Manninen HE, Aalto J, Porcar-Castell A, Garmash O, Nieminen T, Ehn M, Kangasluoma J, Junninen H, Levula J, Duplissy J, Ahonen LR, Rantala P, Heikkinen L, Yan C, Sipilä M, Worsnop DR, Bäck J, Petäjä T, Kerminen VM, Kulmala M.
PMID: 28374761
Sci Rep. 2017 Apr 04;7:45707. doi: 10.1038/srep45707.

Solar eclipses provide unique possibilities to investigate atmospheric processes, such as new particle formation (NPF), important to the global aerosol load and radiative balance. The temporary absence of solar radiation gives particular insight into different oxidation and clustering processes...

Dynamics of the energy flow through photosystem II under changing light conditions: a model approach.

Functional plant biology : FPB

Porcar-Castell A, Bäck J, Juurola E, Hari P.
PMID: 32689230
Funct Plant Biol. 2006 Mar;33(3):229-239. doi: 10.1071/FP05133.

Several biochemical models of photosynthesis exist that consider the effects of the dynamic adjustment of enzymatic and stomatal processes on carbon assimilation under fluctuating light. However, the rate of electron transport through the light reactions is commonly modelled by...

Heatwave breaks down the linearity between sun-induced fluorescence and gross primary production.

The New phytologist

Martini D, Sakowska K, Wohlfahrt G, Pacheco-Labrador J, van der Tol C, Porcar-Castell A, Magney TS, Carrara A, Colombo R, El-Madanay T, Gonzalez-Cascon R, Martín MP, Julitta T, Moreno G, Rascher U, Reichstein M, Rossini M, Migliavacca M.
PMID: 34921419
New Phytol. 2021 Dec 17; doi: 10.1111/nph.17920. Epub 2021 Dec 17.

Sun-induced fluorescence in the far-red region (SIF) is increasingly used as a remote and proximal-sensing tool capable of tracking vegetation gross primary production (GPP). However, the use of SIF to probe changes in GPP is challenged during extreme climatic...

Heatwave breaks down the linearity between sun-induced fluorescence and gross primary production.

The New phytologist

Martini D, Sakowska K, Wohlfahrt G, Pacheco-Labrador J, van der Tol C, Porcar-Castell A, Magney TS, Carrara A, Colombo R, El-Madany TS, Gonzalez-Cascon R, Martín MP, Julitta T, Moreno G, Rascher U, Reichstein M, Rossini M, Migliavacca M.
PMID: 34921419
New Phytol. 2021 Dec 17; doi: 10.1111/nph.17920. Epub 2021 Dec 17.

Sun-induced fluorescence in the far-red region (SIF) is increasingly used as a remote and proximal-sensing tool capable of tracking vegetation gross primary production (GPP). However, the use of SIF to probe changes in GPP is challenged during extreme climatic...

Spatial Variation of Leaf Optical Properties in a Boreal Forest Is Influenced by Species and Light Environment.

Frontiers in plant science

Atherton J, Olascoaga B, Alonso L, Porcar-Castell A.
PMID: 28352274
Front Plant Sci. 2017 Mar 14;8:309. doi: 10.3389/fpls.2017.00309. eCollection 2017.

Leaf Optical Properties (LOPs) convey information relating to temporally dynamic photosynthetic activity and biochemistry. LOPs are also sensitive to variability in anatomically related traits such as Specific Leaf Area (SLA), via the interplay of intra-leaf light scattering and absorption...

Field and controlled environment measurements show strong seasonal acclimation in photosynthesis and respiration potential in boreal Scots pine.

Frontiers in plant science

Kolari P, Chan T, Porcar-Castell A, Bäck J, Nikinmaa E, Juurola E.
PMID: 25566291
Front Plant Sci. 2014 Dec 12;5:717. doi: 10.3389/fpls.2014.00717. eCollection 2014.

Understanding the seasonality of photosynthesis in boreal evergreen trees and its control by the environment requires separation of the instantaneous and slow responses, as well as the dynamics of light reactions, carbon reactions, and respiration. We determined the seasonality...

Heatwave breaks down the linearity between sun-induced fluorescence and gross primary production.

The New phytologist

Martini D, Sakowska K, Wohlfahrt G, Pacheco-Labrador J, van der Tol C, Porcar-Castell A, Magney TS, Carrara A, Colombo R, El-Madanay T, Gonzalez-Cascon R, Martín MP, Julitta T, Moreno G, Rascher U, Reichstein M, Rossini M, Migliavacca M.
PMID: 34921419
New Phytol. 2021 Dec 17; doi: 10.1111/nph.17920. Epub 2021 Dec 17.

Sun-induced fluorescence in the far-red region (SIF) is increasingly used as a remote and proximal-sensing tool capable of tracking vegetation gross primary production (GPP). However, the use of SIF to probe changes in GPP is challenged during extreme climatic...

Dynamic response of plant chlorophyll fluorescence to light, water and nutrient availability.

Functional plant biology : FPB

Cendrero-Mateo MP, Carmo-Silva AE, Porcar-Castell A, Hamerlynck EP, Papuga SA, Moran MS.
PMID: 32480718
Funct Plant Biol. 2015 Jul;42(8):746-757. doi: 10.1071/FP15002.

Chlorophyll molecules absorb photosynthetic active radiation (PAR). The resulting excitation energy is dissipated by three competing pathways at the level of photosystem: (i) photochemistry (and, by extension, photosynthesis); (ii) regulated and constitutive thermal energy dissipation; and (iii) chlorophyll-a fluorescence...

Showing 1 to 8 of 8 entries