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Quality Modeling System (RAQMS) is used to estimate the tropospheric ozone budget over east Asia during the NASA Global Tropospheric Experiment (GTE) Transport and Chemical Evolution over the Pacific (TRACE-P) mission. The computed ozone budget explicitly accounts for stratosphere/troposphere exchange (STE) and in situ ozone production using on-line(More)
A high resolution Thomson scattering diagnostic is in operation on the Alcator C-Mod tokamak, measuring radial profiles of electron temperature and density at the plasma edge. Photons are scattered from an Nd-YAG laser beam pulsed at 30 Hz (1.3-J, 8-ns pulse), and are measured by a filter polychromator with four spectral channels. The polychromator measures(More)
  • Alcator C-Mod, E. Edlund, +25 authors J. Hosea
  • 2006
This paper reviews the physics and technology of wave-particle interaction experiments in the ion cyclotron range of frequencies (ICRF) and the lower hybrid range of frequencies (LHRF) on the Alcator C-Mod tokamak. Operation of fixed frequency (80 MHz) and tunable (40 – 80 MHz) ICRF transmitters and the associated transmission system is described. Key(More)
This study demonstrates substantial removal of iron (Fe) from acid mine drainage (pH ≈3) in a passive vertical flow reactor (VFR) with an equivalent footprint of 154 m(2) per L/s mine water and residence times of >23 h. Average Fe removal rate was 67% with a high of 85% over the 10-month trial. The fraction of Fe passing a 0.22 µm filter (referred to here(More)
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