HR: 15:25h
AN: A33F-08    [Abstracts]
TI: RADAGAST: Modelling Surface and TOA Fluxes to Estimate Atmospheric Flux Divergence
AU: * Bharmal, N A
EM: nab@mail.nerc-essc.ac.uk
AF: Environmental Systems Science Centre, University of Reading, Harry Pitt Building Whiteknights, Shinfield Rd, Reading, Ber RG6 6AL, United Kingdom
AU: Slingo, A
EM: as@mail.nerc-essc.ac.uk
AF: Environmental Systems Science Centre, University of Reading, Harry Pitt Building Whiteknights, Shinfield Rd, Reading, Ber RG6 6AL, United Kingdom
AU: Robinson, G
EM: gazza@mail.nerc-essc.ac.uk
AF: Environmental Systems Science Centre, University of Reading, Harry Pitt Building Whiteknights, Shinfield Rd, Reading, Ber RG6 6AL, United Kingdom
AU: Settle, J
EM: jjs@mail.nerc-essc.ac.uk
AF: Environmental Systems Science Centre, University of Reading, Harry Pitt Building Whiteknights, Shinfield Rd, Reading, Ber RG6 6AL, United Kingdom
AU: White, H
EM: hew@mail.nerc-essc.ac.uk
AF: Environmental Systems Science Centre, University of Reading, Harry Pitt Building Whiteknights, Shinfield Rd, Reading, Ber RG6 6AL, United Kingdom
AB: The ARM mobile facility deployment to Niger, during 2006, was chosen partly to complement the GERB broadband radiation budget instrument on Meteosat-8. This afforded the opportunity of combining radiation measurements at the top of atmosphere (GERB) and at the surface (AMF). Using the AMF instrumentation, the modelling of these fluxes in the atmospheric column over Niamey has been initiated. The aim is to create a framework that ensures consistency between the surface and TOA components in the atmospheric radiation budget. We achieve this by utilising satellite retrievals to characterise the spatial inhomogeneity and thus produce estimates of the surface and TOA fluxes that are most consistent with the measurements. Examples of the modelling in this framework are shown, and the method illustrated. The result of this modelling is to produce surface and TOA fluxes that can be combined to produce the divergence values under a variety of atmospheric conditions (e.g. aerosol loading, various cloud types). Initial results of the resultant divergence values for the whole of 2006 will also be shown.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0321 Cloud/radiation interaction
DE: 0360 Radiation: transmission and scattering
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting