[1] Using the Single Scanner Footprint (SSF) data that combines the multi-spectral Moderate Resolution Imaging Spectroradiometer (MODIS) cloud and aerosol products with the Clouds and the Earth’s Radiant Energy System (CERES) top of atmosphere broadband radiative fluxes, we first provide observational estimates of the instantaneous cloud-free shortwave aerosol radiative forcing (SWARF) over the...

We consider production of dilepton pairs through coherent electro-magnetic radiation during nuclear collisions. We show that the number of pairs produced through bremsstrahlung is about two orders of magnitude smaller than the yield measured by the CERES collaboration. Therefore, coherent bremsstrahlung can be ruled out as an explanation for the observed enhancement of low mass dileptons in CER...

During 1999 the CERES experiment upgraded by the new TPC was taking data from semi-central Pb+Au collisions at 40 AGeV. The analysis of the di-electron spectra shows an enhancement in the low mass region of at least the same magnitude as previously observed at full SPS energy. The results are compared to model calculations with and without medium modifications of the vector mesons. The addition...

Ana Marín for the CERES Collaboration: D. Adamováa, G. Agakichievb, A. Andronicc, D. Antończykd, H. Appelshäuserd, V. Belagab, J. Bielčíkováe,f, P. Braun-Munzingerc, O. Buschc, A. Cherling, S. Damjanovićf, T. Dietelh, L. Dietrichf, A. Dreesi, S. I. Esumif, K. Filimonovf, K. Fomenkob, Z. Fraenkelg, C. Garabatosc, P. Gläsself, G. Heringc, J. Holeczekc, M. Kaliskyc, S. Knieged, V. Kushpila, W. Lud...

If a planetary-mass body were present in the asteroid belt, the orbits of the terrestrial planets and those of the giant planets would be more closely coupled. A greater exchange of angular momentum could affect the stability of the terrestrial planets. Moreover, the planet in the asteroid belt could itself excite terrestrial planet eccentricities. To study these effects, we have simulated seve...

The CERES/NA45 experiment measures low mass electron pair production in Pb-Au collisions at 158AGeV at the CERN SPS. In this paper, we present the electron pair enhancement in the mass range 0:2 < mee < 0:7 GeV/c 2 , it increases more than linear with charged multiplicity and is most pronounced at low pair pT < 0:5 GeV/c. Transverse mass and rapidity distributions for charged hadrons h + ? h ? ...

In temperate climates, animals that produce long-term food caches must forage simultaneously for nutrients to survive, reproduce, and collect enough stores to survive the winter. Thus, an animal is simultaneously makes two foraging choices 1) what nutrients to collect for its immediate needs and 2) what food items should be stored. The cues the animal uses to make these two decisions shoulddiff...

The microand macrophysical properties of clouds play a crucial role in Earth’s radiation budget. The NASA Clouds and Earth’s Radiant Energy System (CERES) is providing simultaneous measurements of the radiation and cloud fields on a global basis to improve the understanding and modeling of the interaction between clouds and radiation at the top of the atmosphere, at the surface, and within the ...