HR: 08:00h
AN: A51G-01 INVITED     [Abstracts]
TI: Correlations Between Aerosol and Environmental Properties: Clues to Determine Skill in Global Modeling
AU: * Kinne, S
EM: kinne@dkrz.de
AF: MPI Meteorology, Bundesstrasse 53, 20146, Hamburg Germany
AU: Quass, J
EM: quaas@dkrz.de
AF: Met Office, FitzRoy Road, Exeter, EX1 3PB United Kingdom
AB: Climate impacts from interactions between anthropogenic added aerosol and its environment introduce one of the largest uncertainties in climate modelling also because observational evidence (e.g. tracks) and process understanding (e.g. injection experiments at cloud base) have a local flavour which not necessarily applies to the regional resolution in global modelling, particularly if a temporal responses must be considered. This raises questions, how appropriate are as the parameterizations in global modelling, which often address only a sub-set of all possible feedbacks. To get a general idea, if models get it right with respect to aerosol-environment interactions, we turn to available long-term satellite data sets (e.g. MODIS, MISR, POLDER), which provide (quasi-) simultaneous (or associated) retrievals for aerosol properties and other environmental properties of interest. Based on data-pairs, associated in space and time, monthly correlation statistics at different horizontal scales are explored to establish global correlation fields. While interpretations of these correlations at times can be a challenge, the correlations clearly set constraints that need to be met by global modelling, if the dominant interactions are properly considered. The correlations in particular focus on aspects of the influence of anthropogenic aerosol on the hydrological cycle (e.g. clouds and precipitation). Finally, correlations fields of simulations with aerosol modules of the 16 models that participated in the AeroCom exercise will be introduced and larger discrepancies to satellite data based correlations will be discussed.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0315 Biosphere/atmosphere interactions (0426, 1610)
DE: 0321 Cloud/radiation interaction
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 1855 Remote sensing (1640)
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005