2.3.1 spase://CNES/NumericalData/CDPP-AMDA/Ulysses/SWOOPS/ulys-bai-mom sw ions 2015-10-13T15:17:00 The proton temperature has been estimated in two different ways, one of which will sometimes lead to an overestimate of the temperature and one of which will sometimes lead to an underestimate. T-large is the integral of the distribution in three-dimensional velocity space over all energy channels and angle bins that are statistically above noise. The criterion for noise determination is based upon the estimation of the total contribution from a shell that is spherically symmetric in velocity space. T-large has the drawback that at times when the solar wind is cold the angular responses of the instrument channels are as wide or wider than the beam, and the temperature is overestimated. T-small is estimated by summing over angle the observations at a fixed energy. The moments of the resulting one dimensional plasma spectrum are then summed and the resulting RR (radial) component of the temperature tensor is used as the estimate of proton temperature. Additionally, to avoid contamination from alpha particles, no channels further in velocity space from the proton peak than the minimum in flux between the proton and alpha particles peaks are used in the T-small estimate. T-large and T-small will generally bracket the true temperature. However, for very cold plasma, T-small may not be a true minimum. spase://SMWG/Person/Elena.Budnik GeneralContact Readme file at SPDF ftp://spdf.gsfc.nasa.gov/pub/data/ulysses/merged/ulymgd.txt SWOOPS data users' guide ftp://spdf.gsfc.nasa.gov/pub/data/ulysses/plasma/swoops/ion/swoops_ion_users_guide_update_20030214.txt spase://SMWG/Repository/CNES/CDPP-AMDA Online Open http://amda.cdpp.eu NetCDF CDAWeb UY_M0_BAI spase://CNES/Instrument/CDPP-AMDA/Ulysses/SWOOPS ThermalPlasma 1990-11-18T00:33:48Z 2009-06-30T15:54:12Z PT4M PT8M Heliosphere density h+ n_p_ulys Solar wind proton plasma density phys.density;phys.atmol.ionStage cm-3 TimeSeries Proton NumberDensity density he++ n_a_ulys Solar wind alpha particle plasma density phys.density;phys.atmol.ionStage cm-3 TimeSeries AlphaParticle Average NumberDensity v_rtn v_ulys_rtn Hourly averaged solar wind plasma flow speed phys.veloc;phys.atmol.ionStage km/s Spherical RTN TimeSeries 3 vr 1 v_ulys_rtn(0) vt 2 v_ulys_rtn(1) vn 3 v_ulys_rtn(2) Proton Average FlowSpeed temperature h+ tp_ulys solar wind plasma temperature phys.temperature;phys.atmol.ionStage eV TimeSeries 2 t_large 1 tp_ulys(0) t_small 2 tp_ulys(1) Proton Temperature