Paper Info
Title
Towards the construction of a standard adjoint GEOS-Chem model
Abstract
In this paper we present the construction of a standardized adjoint of the global GEOS-Chem model. Adjoint models are powerful tools for estimating the sensitivity of (a function of) the model output with respect to a large number of inputs. The construction of adjoint models is a difficult, labor intensive, and error prone task. The adjoint of gas phase chemistry is generated using the Kinetic PreProcessor (KPP) and parsers to automatically interface KPP with GEOS-Chem are constructed. The adjoints of other individual science processes are generated manually and using automatic differentiation tools, and are validated extensively against finite-differences. The standardized adjoint framework discussed here will allow the world-wide community of GEOS-Chem users to perform sensitivity analyses and 4-D variational data assimilation for initial tracer concentrations, boundary conditions, and emission sources.
Year
Venue
Keywords
2009
SpringSim
interface kpp,standardized adjoint,geos-chem user,4-d variational data assimilation,sensitivity analysis,standardized adjoint framework,model output,standard adjoint geos-chem model,global geos-chem model,adjoint model,kinetic preprocessor,data assimilation,finite difference,kinetics,inverse modeling,automatic differentiation,boundary condition
Field
DocType
Citations 
Boundary value problem,Applied mathematics,Adjoint equation,Mathematical optimization,Computer science,Automatic differentiation,Real-time computing,Preprocessor,Data assimilation,Parsing
Conference
2
PageRank 
References 
Authors
0.40
5
7
Name
Order
Citations
PageRank
Kumaresh Singh162.28
Paul Eller221.07
Adrian Sandu332558.93
Daven Henze421.07
Kevin Bowman563.84
Monika Kopacz620.40
Meemong Lee752.92