We discuss how dilepton production is related to chiral symmetry and its restoration. We then analyse presently available data by the CERES collaboration in this context. We find that the present data do not support any conclusions concerning the restoration of chiral symmetry. We finally provide a prediction for the dilepton spectrum for the just completed low energy (40 GeV) run at the SPS.

The electromagnetic emission rates at SPS energies satisfy spectral constraints in leading order in the pion and nucleon densities. These constraints follow from the strictures of broken chiral symmetry. We saturate these constraints using available data, leading to model independent emission rates from a hadronic gas. With a simple fire-ball scenario, only large nucleon densities may account f...

Using daily Goddard Chemistry Aerosol Radiation and Transport (GOCART) model simulations and columnar retrievals of 0.55 μm aerosol optical thickness (AOT) and fine mode fraction (FMF) from the Moderate Resolution Imaging Spectroradiometer (MODIS), we estimate the satellite-derived aerosol properties over the global oceans between June 2006 and May 2007 due to black carbon (BC), organic carbon ...

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Reanalysis datasets from atmospheric models and satellite products are often used for Arctic surface shortwave (SW) longwave (LW) radiative budget analyses, but they suffer limitations require validation against local-scale observations. These rare in the high Arctic, especially longer periods that include seasonal transitions. In this study, radiation meteorological observations acquired durin...

Abstract Satellite, reanalysis, and ocean in situ data are analyzed to evaluate regional, hemispheric global mean trends Earth's energy fluxes during the first 20 years of twenty‐first century. Regional net top‐of‐atmosphere (TOA) radiation from Clouds Radiant Energy System (CERES), ECMWF Reanalysis 5 (ERA5), a model similar ERA5 with prescribed sea surface temperature (SST) ice differ markedly...