1. Satellite-based data: ISCCP, GPCP.
Project Title: Understanding the coupling of surface, boundary layer, cloud and radiative processes in the Global Water and Energy Cycle
Project team: Alan K. Betts and Mike Bosilovich )
Project status:
Year 1 & 2 complete – see Betts (2007) and Betts et al. (2007)
Year 3 – focus is MERRA 2004 and ERA-interim
Betts, A. K. (2007), Coupling of water vapor convergence, clouds, precipitation, and land-surface processes, J. Geophys. Res., 112, D10108, doi: /2006JD
Betts, A.K., M.A.F. Silva Dias, G. Fisch, C. von Randow, J.C.P. Cohen, R.da Silva, D.R. Fitzjarrald (2007), The Amazonian Boundary layer and mesoscale circulations. Chapter B3 in Amazonia and Global Change. In review. ftp://members.aol.com/akbetts/Amazon-B3-Bettsetal.pdf
Science issue: Evaluating the coupling of land-surface, boundary-layer, cloud and radiative processes in MERRA.
Approach: Analyze output from MERRA on daily and seasonal timescales and compare with data, ERA40 and ERA- Interim
Satellite-based data: ISCCP, GPCP.
Other data: Fluxnet, surface analyses
Models: MERRA, ECMWF reanalyses
Study Period: 1979-present
NEWS linkages: (pull, push, collaborate, external)
Bosilovich – MERRA output
MERRA team – understanding of land-surface coupling
Discussions with Rossow on LANDFLUX
Discussions with Kato on tropical cloud analyses
Collaboration with Martin Koehler, ECMWF
Major Result to go in lower left side: Figures should not be too complex or busy – this example is probably the limit of acceptable complexity.
Comparison of land-surface coupling in MERRA (Mar-Oct 2004) with ERA-40. Top is pressure height to LCL and bottom is effective cloud albedo, stratified by precipitation rate
Updated: Oct. 25, 007