Aerosol dry deposition on vegetative canopies. Part I: Review of present knowledge

Petroff, Alexandre; Mailliat, A.; Amielh, Muriel; Anselmet, Fabien

doi:10.1016/j.atmosenv.2007.09.043

Cited by 277 publications

(249 citation statements)

References 109 publications

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“…Direct measurements of dust concentrations are needed as well as optical depths, to allow both modeled concentrations and parametrized radiative properties to be assessed. Improved understanding and parametrizations of wet and dry deposition processes are also required (Jung and Shao, 2006;Petroff et al, 2008). The representation of radiative properties is another area where development would be useful.…”

Section: Summary and Status Of Dust In Earth System Modelsmentioning

confidence: 99%

A review of natural aerosol interactions and feedbacks within the Earth system

et al. 2010

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Abstract.The natural environment is a major source of atmospheric aerosols, including dust, secondary organic material from terrestrial biogenic emissions, carbonaceous particles from wildfires, and sulphate from marine phytoplankton dimethyl sulphide emissions. These aerosols also have a significant effect on many components of the Earth system such as the atmospheric radiative balance and photosynthetically available radiation entering the biosphere, the supply of nutrients to the ocean, and the albedo of snow and ice. The physical and biological systems that produce these aerosols can be highly susceptible to modification due to climate change so there is the potential for important climate feedbacks. We review the impact of these natural systems on atmospheric aerosol based on observations and models, including the potential for long term changes in emissions and the feedbacks on climate. The number of drivers of change is very large and the various systems are strongly coupled. There have therefore been very few studies that integrate the various effects to estimate climate feedback factors. Nevertheless, available observations and model studies suggest that the regional radiative perturbations are potentially several Watts per square metre due to changes in these natural aerosol emissions in a future climate. Taking into account only the direct radiative effect of changes in the atmospheric burden of natural aerosols, and neglecting potentially large effects on other parts of the Earth system, a global mean radiative perturbation approaching 1 W m −2 is possible by the end of the century. The level of scientific understanding of the climate drivers, interactions and impacts is very low.

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Section: Summary and Status Of Dust In Earth System Modelsmentioning

confidence: 99%

A review of natural aerosol interactions and feedbacks within the Earth system

et al. 2010

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“…On the other hand, the vegetation structure and activity has an impact on atmospheric chemistry through deposition of pollutants and emissions of volatile organic compounds (Guenther et al, 2006;Lathiere et al, 2006;Petroff et al, 2008). Hence, there is a strong coupling between O 3 and vegetation: the first one impacts plant productivity that, in turn, can affect the atmospheric O 3 concentration.…”

Section: Introductionmentioning

confidence: 99%

“…Whereas the impact of atmospheric pollutants on plant productivity has been already evaluated (e.g. Ren et al, 2007), as well as the deposition of pollutants on the canopy (Petroff et al, 2008) and the role of vegetation in BVOC emissions (e.g. Guenther et al, 2006;Lathiere et al, 2006), the vegetation-atmosphere feedbacks are still under investigated.…”

Section: Introductionmentioning

confidence: 99%

“…First, O 3 stress leads to a change in stomatal conductance and can affect the dry deposition velocities, and hence the O 3 concentrations in the canopy (Petroff et al, 2008), or, more generally, in the lower atmosphere. Second, a change in stomatal conductance induces changes in BVOC emissions, and it could increase or decrease the O 3 concentration, depending on the NO x levels (Lathiere et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Impact of tropospheric ozone on the Euro-Mediterranean vegetation

Anav

Menut

Khvorostyanov

et al. 2011

Global Change Biology

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The impact of ozone (O 3 ) on European vegetation is largely under-investigated, despite huge areas of Europe are exposed to high O 3 levels and which are expected to increase in the next future. We studied the potential effects of O 3 on photosynthesis and leaf area index (LAI) as well as the feedback between vegetation and atmospheric chemistry using a land surface model (ORCHIDEE) at high spatial resolution (30 km) coupled with a chemistry transport model (CHIMERE) for the whole year 2002. Our results show that the effect of tropospheric O 3 on vegetation leads to a reduction in yearly gross primary production (GPP) of about 22% and a reduction in LAI of 15-20%. Larger impacts have been found during summer, when O 3 reaches higher concentrations. During these months the maximum GPP decrease is up to 4 g C m À2 day À1 , and the maximum LAI reduction is up to 0.7 m 2 m À2 . Since CHIMERE uses the LAI computed by ORCHIDEE to estimate the biogenic emissions, a LAI reduction may have severe implications on the simulated atmospheric chemistry. We found a large change in O 3 precursors that however leads to small changes in tropospheric O 3 concentration, while larger changes have been found for surface NO 2 concentrations.

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“…The theoretically predicted deposition rate is lowest for particle sizes between 100 nm and 2 µm, with several orders of magnitude difference between different models (cf. Petroff et al, 2008). In a review of particle atmosphere-surface exchange, Pryor et al (2008b) conclude that: few studies have sought to quantify the dependence of flux on particle size; observations over forests do not support the theoretical minimum depositions rate manifest in models; and that more research is required to determine if dry deposition of aerosols is an important removal mechanism for ultrafine particles, especially over surfaces with high roughness, such as forests.…”

Section: Introductionmentioning

confidence: 99%

Aerosol flux measurements above a mixed forest at Borden, Ontario

et al. 2011

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Abstract. Aerosol fluxes were measured above a mixed forest by Eddy Covariance (EC) with a Fast Mobility Particle Sizer (FMPS) at the Borden Forest Research Station in Ontario, Canada between 13 July and 12 August 2009. Chemically speciated flux measurements were made at a height of 29 m at the same location between 19 July and 2 August, 2006 using a Quadrupole Aerosol Mass Spectrometer (Q-AMS). The Q-AMS measured an average sulphate deposition velocity of 0.3 mm s −1 and an average nitrate deposition velocity of 4.8 mm s −1 . The FMPS, mounted at a height of 33 m (approximately 10 m above the canopy top) and housed in a temperature controlled enclosure, measured sizeresolved particle concentrations from 3 to 410 nm diameter at a rate of 1 Hz. For the size range 18 < D < 452 nm, 60 % of fluxes were upward. The exchange velocity was between −0.5 and 2.0 mm s −1 , with median values near 0.5 mm s −1 for all sizes between 22 and 310 nm. The size distribution of the apparent production rate of particles at 33 m peaked at a diameter of 75 nm. Results indicate a decoupling of the above and below canopy spaces, whereby particles are stored in the canopy space at night, and are then diluted with cleaner air above during the day.

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Aerosol dry deposition on vegetative canopies. Part I: Review of present knowledge

Cited by 277 publications

References 109 publications

A review of natural aerosol interactions and feedbacks within the Earth system

A review of natural aerosol interactions and feedbacks within the Earth system

Impact of tropospheric ozone on the Euro-Mediterranean vegetation

Aerosol flux measurements above a mixed forest at Borden, Ontario

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