Aerosols and Water Ice in Jupiter’s Stratosphere from UV-NIR Ground-based Observations

NO2 profiling from ground-based UV-visible observations

F. Hendrick, B. Barret , M. Van Roozendael, H. Boesch , A. Butz, M. De Mazière, F. Goutail, C. Hermans, J.-C. Lambert, K. Pfeilsticker, and J.-P. Pommereau Institut d’Aéronomie Spatiale de Belgique (IASB-BIRA), Brussels, Belgium Institute for Environmental Physics, University of Heidelberg, Germany Service d’Aéronomie du CNRS, Verrieres le Buisson, France Now at: Service de Chimie Quantique et ...

Ground Based Measurements of Solar UV Index in Tabriz

Introduction: Ultraviolet index (UVI) is a dimensionless scale, which describes the maximum intensity and biologic effects of UV during a specific time, on surface of the earth. The UVI is  an  international  standard measurement of  the  strength  of sunburn  producing ultraviolet radiation at a particular place and time. This index is an easy and understandable concept for pr...

Sarychev aerosols in the Arctic stratosphere

Assimilation of ice and water observations from SAR imagery to improve estimates of sea ice concentration

In this paper the assimilation of binary observations calculated from synthetic aperture radar (SAR) images of sea ice is investigated. Ice and water observations are obtained from a set of SAR images by thresholding ice and water probabilities calculated using a supervised maximum likelihood estimator (MLE). These ice and water observations are then assimilated in combination with ice concentr...

Water balance-based actual evapotranspiration reconstruction from ground and satellite observations over the conterminous United States

The objective of this study is to produce an observationally based monthly evapotranspiration (ET) product using the simple water balance equation across the conterminous United States (CONUS). We adopted the best quality ground and satellite-based observations of the water budget components, i.e., precipitation, runoff, and water storage change, while ET is computed as the residual. Precipitat...