Version 1 of the Community Earth SystemModel, in the configurationwhere its full carbon cycle is enabled, is introduced and documented. In this configuration, the terrestrial biogeochemical model, which includes carbon– nitrogen dynamics and is present in earlier model versions, is coupled to an ocean biogeochemical model and atmospheric CO2 tracers. The authors provide a description of the mod...

We have developed an instrument for making continuous, field-based, part-per-million (ppm) level measurements of atmospheric oxygen concentration, and have implemented it on research cruises in the equatorial Pacific and Southern Oceans. The instrument detects changes in oxygen by the absorption of vacuum ultraviolet (VUV) radiation as it passes through a flowing gas stream, and has a precision...

Ecosystem fluxes of energy, water, and CO2 result in spatial and temporal variations in atmospheric properties. In principle, these variations can be used to quantify the fluxes through inverse modelling of atmospheric transport, and can improve the understanding of processes and falsifiability of models. We investigated the influence of ecosystem fluxes on atmospheric CO2 in the vicinity of th...

The long-range goal of this research is to improve understanding of small-scale mixing processes in the atmospheric boundary layer and to incorporate the effects of these processes in mesoscale models. Studies of the atmospheric boundary layer using large-eddy simulation (LES) have demonstrated the value of these models in describing basic turbulent processes in the atmospheric boundary layer. ...

A coupled atmospheric chemistry and climate system model was developed using the modal aerosol version of the National Center for Atmospheric Research Community Atmosphere Model (modal-CAM; v3.6.33) and the Max Planck Institute for Chemistry’s Module Efficiently Calculating the Chemistry of the Atmosphere (MECCA; v2.5) to provide enhanced resolution of multiphase processes, particularly those i...

■ Hyperspectral imaging sensors are used to detect and identify diverse surface materials, topographical features, and geological features. Because the intervening atmosphere poses an obstacle to the retrieval of surface reflectance data, algorithms exist to compensate the measured signal for the effects of the atmosphere. This article provides an overview and an evaluation of available atmosph...

ECHMERIT V1.0 – a new global fully coupled mercury-chemistry and transport model G. Jung, I. M. Hedgecock, and N. Pirrone CNR – Institute for Atmospheric Pollution, Division of Rende, 87036 Rende, Italy Received: 29 April 2009 – Accepted: 29 April 2009 – Published: 7 May 2009 Correspondence to: G. Jung ([email protected]) Published by Copernicus Publications on behalf of the European Geoscie...

Modelling the mid-Pliocene Warm Period climate with the IPSL coupled model and its atmospheric component LMDZ4 C. Contoux, G. Ramstein, and A. Jost Laboratoire des Sciences du Climat et de l’Environnement/IPSL, CEA-CNRS-UVSQ, UMR8212, Orme des Merisiers, CE Saclay, 91191 Gif-sur-Yvette Cedex, France UPMC Université Paris 06, UMR7619, Sisyphe, 75005, Paris, France CNRS, UMR7619, Sisyphe, 75005, ...

Correct knowledge of soil moisture is important for improving the prediction of coupled land surface atmosphere interactions. This is due to the control that soil moisture exerts on the latent and sensible heat flux transfer between the land surface and atmosphere. Because of this strong dependence on moisture availability, improved atmospheric prediction requires correct initialisation of soil...

Conservation of water demands that meridional ocean and atmo6 sphere freshwater transports (FWT) are of equal magnitude but opposite in 7 direction. This suggests that the atmospheric FWT and its associated latent 8 heat (LH) transport could be thought of as a “coupled ocean/atmosphere 9 mode”. But what is the true nature of this coupling? Is the ocean passive or 10