• Aucun résultat trouvé

Decomposing sensible fluxes from two urban zones using LAS scintillometry over the city of Nantes during the FLUXSAP 2012 measurement campaign

N/A
N/A
Protected

Academic year: 2021

Partager "Decomposing sensible fluxes from two urban zones using LAS scintillometry over the city of Nantes during the FLUXSAP 2012 measurement campaign"

Copied!
3
0
0

Texte intégral

(1)

HAL Id: hal-02806369

https://hal.inrae.fr/hal-02806369v2

Submitted on 20 Jul 2020

HAL is a multi-disciplinary open access archive for the deposit and dissemination of sci- entific research documents, whether they are pub- lished or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers.

L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

Decomposing sensible fluxes from two urban zones using LAS scintillometry over the city of Nantes during the

FLUXSAP 2012 measurement campaign

Mark Rankin Irvine, Jean-Pierre Lagouarde, Sylvia Dayau, Aurore Brut, Jean-Martial Cohard, Georges Najjar, Fabrice Rodriguez, Jean Marc Rouaud,

Patrice Mestayer

To cite this version:

Mark Rankin Irvine, Jean-Pierre Lagouarde, Sylvia Dayau, Aurore Brut, Jean-Martial Cohard, et al.. Decomposing sensible fluxes from two urban zones using LAS scintillometry over the city of Nantes during the FLUXSAP 2012 measurement campaign. Tübingen Atmospheric Physics Sympo- sium ”Scintillometers and Applications”, Oct 2013, Tübingen, Germany. �hal-02806369v2�

(2)

HAL Id: hal-02806369

https://hal.inrae.fr/hal-02806369

Submitted on 6 Jun 2020

HAL is a multi-disciplinary open access archive for the deposit and dissemination of sci- entific research documents, whether they are pub- lished or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers.

L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

Decomposing sensible fluxes from two urban zones using LAS scintillometry over the city of Nantes during the

FLUXSAP 2012 measurement campaign

Mark Rankin Irvine, Jean-Pierre Lagouarde, Sylvia Dayau, Aurore Brut, Jean-Martial Cohard, Georges Najjar, Fabrice Rodriguez, Jean-Marc Rouaud,

Patrice Mestayer

To cite this version:

Mark Rankin Irvine, Jean-Pierre Lagouarde, Sylvia Dayau, Aurore Brut, Jean-Martial Cohard, et al.. Decomposing sensible fluxes from two urban zones using LAS scintillometry over the city of Nantes during the FLUXSAP 2012 measurement campaign. Tübingen Atmospheric Physics Sympo- sium ”Scintillometers and Applications”, Oct 2013, Tübingen, Germany. �hal-02806369�

(3)

Tübingen Atmospheric Physics Symposium "Scintillometers and Applications"

7 - 9 Oct 2013, Tübingen, Germany 19 | P a g e

DECOMPOSING SENSIBLE FLUXES FROM TWO URBAN ZONES USING LAS SCINTILLOMETERY OVER THE CITY OF NANTES DURING THE

FLUXSAP 2012 MEASUREMENT CAMPAIGN.

IrvineM.R. (1), Lagouarde J-P. (1), Dayau S. (1), Brut A. (2), J-L., Cohard J-M. (3), Najjar G. (4), Rodriguez F. (5), Rouaud J-M. (5) Mestayer P. (6)

(1) INRA, UR1263 EPHYSE, F-33140 Villenave d’Ornon (2) CESBIO, UMR5126, F-31401 Toulouse

(3) LTHE, UMR5564, F-38400 Saint-Martin d’Hère (4) LSIIT, UMR7005, F-67412 Illkrich

(5) IFSTTAR, GER, F-44341

(6) IRSTV, FR CNRS 2488, F-44321

In the framework of a recent research program dealing with the sustainable development of cities (ANR ‘Villes Durables’, ‘VegDUD’), two intensive field experiments (FluxSAP,

http://www.irstv.fr/ Mestayer [1]) were installed over the city of Nantes, in France. After an initial experiment in 2010, a second experiment in 2012 was set up to investigation different urban zones within Nantes. One an artificial surface (a parking lot), a typical 1960’s urban housing zone and a modern ‘eco-quarter’ housing zone built in 2010/11.The experiment ran during the month of June 2012. As part of the set-up 4 Large Aperture Scintillometers (LAS) were installed over the city with distances ranging from 800m to 3km. The

installation was set-up in such a way that there is one trajectory, which integrates roughly over all surfaces, with the others installed to decompose the long trajectory into smaller

‘typical’ surfaces.

Sensible heat flux along each path will be presented in conjunction with footprint estimates developed using the method from Meijninger [2] based on the dispersion model of Horst [3].

Interpretation of the results with regard to surface type will be discussed.

References

[1] Mestayer, P.G., Rosant, J.-M., Rodriguez, F., and Rouaud, J.-M., 2011, La Campagne Expérimentale FluxSAP 2010, La Météorologie 73, pp. 34-44

[2] Meijninger, W.M.L., Hartogensis, O.K., Hoedjes, J.C.B., Zuurbier, R.M. and DeBruin, H.A.R. 2002, Determination of Area-Averaged Sensible Heat Fluxes with a Large Aperature Scintillometer over a Heterogeneous Surface, Bound. Layer Meteorol. 105, pp. 37-62 [3] Horst, T.W. and Weil, J.C., 1992, Footprint Estimation for Scalar Flux Measurements in the atmospheric surface-layer, Bound. Layer Meteorol. 59, pp. 279-296.

Références

Documents relatifs

Mark Rankin Irvine, Jean-Pierre Lagouarde, Sylvia Dayau, Aurore Brut, Pierre-Adrien Solignac, Jean-Louis Selves, Jean-Martial Cohard, Georges.. Najjar, Céline Quentin,

Examples are given here for air temperature and relative humidity measurements at 3 m agl (Figure 5), sensible heat fluxes from the eddy-correlation sensors (Figure 6) and from

If these measurements were shown valid over slightly heterogeneous terrain [1], questions still remain when spatial heterogeneity is more pronounced (leading to

For the spatial aggregation method, the ET was obtained as the residual term of the energy balance providing the estimates of the available energy and sensible heat flux

The communication presents the experimental rationale, the set-up, some of the first results, and preliminary conclusions on the measurement feasibility over an urban

4a and 4b the sensible heat fluxes obtained from the 424 LAS (H LAS ) are compared, under unstable conditions, to 425 those measured with eddy-covariance (H EC ) for the southern

The characterization of the urban heat island (UHI) in terms of both spatial extension and intensity is important for various purposes: analysis of urban climate, impact on

They observed that on J22, the sea breeze set up around 11:00 UTC at the west of the Rhˆone valley exit (at the south of the Massif Central) and then penetrated later in- land, to