Correlations between tropopause height and total ozone: Implications for long-term changes

The Impact of Stratospheric Ozone Recovery on Tropopause Height Trends

The evolution of the tropopause in the past, present, and future climate is examined by analyzing a set of long-term integrations with stratosphere-resolving chemistry climate models (CCMs). These CCMs have high vertical resolution near the tropopause, a model top located in the mesosphere or above, and, most important, fully interactive stratospheric chemistry. Using such CCM integrations, it ...

Simulation of Long-term Returns with Stochastic Correlations

This paper focuses on a nonlinear stochastic model for financial simulation and forecasting based on assumptions of multivariate stochastic correlation, with an application to the European market. We present in particular the key elements of a structured hierarchical econometric model that can be used to forecast financial and commodity markets relying on statistical and simulation methods. The...

Circulation Sensitivity to Tropopause Height

The possibility that the tropopause could be lower during an ice-age cooling leads to an examination of the general sensitivity of global circulations to the tropopause height by altering a constant stratospheric temperature Ts in calculations with a dry, global, multilevel, spectral, primitive equation model subject to a simple Newtonian heating function. In general, lowering the tropopause by...

Improved Sciamachy Wfdoas Total Ozone Retrieval: Steps towards Homogenising Long-term Total Ozone Datasets from Gome, Sciamachy, and Gome2

Currently three European satellite spectrometers, GOME1/ERS2 (1995-present), SCIAMACHY/ENVISAT (2002-present), and GOME2 (2006-present) provide a near global decadal data set of total ozone covering more than a decade. This data are very valuable for the detection of recovery in stratospheric ozone as expected from the levelling off of stratospheric chlorine. In order to detect such a signal be...

Long-Term Effect of Ciprofloxacin on Testicular Tissue: Evidence for Biochemical and Histochemical Changes