Posted by Liz Adams on Sep 1, 2015 in Abstracts, Abstracts 2014
The AGAGE in situ program for non-CO2 greenhouse gases at Cape Grim, 2009–2010 Abstract This report summarises in situ observations at Cape Grim of atmospheric trace gases that are involved in strato-spheric ozone depletion, climate change and tropo-spheric chemistry. During 2009-2010, two instruments continued to operate at Cape Grim as part of the Ad-vanced Global Atmospheric Gases Experiment (AGAGE): (1) a composite gas chromatograph-multi detector (GC-MD) instrument;...
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Posted by Liz Adams on Sep 1, 2015 in Abstracts, Abstracts 2014
Greenhouse gas network design using backward Lagrangian particle dispersion modelling – Part I: Methodology and Australian test case Abstract This paper describes the generation of optimal atmospheric measurement networks for determining the CO2 fluxes over Australia using inverse methods. A Lagrangian particle dispersion model is used in reverse mode together with a Bayesian inverse modelling framework to calculate the relationship between weekly surface fluxes and...
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Posted by Liz Adams on Sep 1, 2015 in Abstracts, Abstracts 2014
Reconciling Ground-Based and Space-Based Estimates of the Frequency of Occurrence and Radiative Effect of Clouds around Darwin, Australia Abstract The objective of this paper is to investigate whether estimates of the cloud frequency of occurrence and associated cloud radiative forcing as derived from ground-based and satellite active remote sensing and radiative transfer calculations can be reconciled over a well instrumented active remote sensing site located in Darwin,...
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Posted by Liz Adams on Sep 1, 2015 in Abstracts, Abstracts 2014
Antarctic sea ice response in ensemble CMIP5 historical and ozone perturbation simulations Abstract The net Southern Hemisphere sea ice area has a small statistically significant positive trend in recent decades in contrast to the decay in the Arctic sea ice cover. There have been a number of theories suggesting that it is driven by strengthening of SAM as a result of ozone depletion; increasing stratification of the ocean from sea ice melt and/or ice shelf melting,...
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Posted by Liz Adams on Sep 1, 2015 in Abstracts, Abstracts 2014
The Antarctic Ozone Hole during 2011 Abstract The Antarctic ozone hole of 2011 is reviewed from a variety of perspectives, making use of various data and analyses. The ozone hole of 2011was relatively large in terms of maximum area, minimum ozone level and total ozone deficit, being ranked amongst the top 10 in terms of severity of the 32 ozone holes adequately characterised since 1979. In particular, the estimated integrated ozone mass effectively removed within the ozone...
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Posted by Liz Adams on Sep 1, 2015 in Abstracts, Abstracts 2014
Evaluation of ACCESS model clouds over the Southern Ocean using synthetic brightness temperature program and COSP package Abstract Sea Surface Temperature (SST) warm bias in the Southern Ocean (SO) is a common problem in most climate models. We investigate the causes of this problem by performing comparisons between the modeled cloud and radiative properties and satellite observations. We use the Australian Community and Climate Earth System Simulator (ACCESS) model to...
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