Curtis R. Cook
York University
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Featured researches published by Curtis R. Cook.
Science | 2009
James A. Whiteway; Leonce Komguem; Cameron S. Dickinson; Curtis R. Cook; M. Illnicki; J. A. Seabrook; Vlad Calin Popovici; Thomas J. Duck; Richard Davy; Peter A. Taylor; Jagruti Pathak; David A. Fisher; A. Carswell; M. Daly; V. J. Hipkin; Aaron P. Zent; Michael H. Hecht; Stephen Wood; Leslie Kay Tamppari; Nilton De Oliveira Renno; John E. Moores; Mark T. Lemmon; Frank Daerden; Peter W. H. Smith
Phoenix Ascending The Phoenix mission landed on Mars in March 2008 with the goal of studying the ice-rich soil of the planets northern arctic region. Phoenix included a robotic arm, with a camera attached to it, with the capacity to excavate through the soil to the ice layer beneath it, scoop up soil and water ice samples, and deliver them to a combination of other instruments—including a wet chemistry lab and a high-temperature oven combined with a mass spectrometer—for chemical and geological analysis. Using this setup, Smith et al. (p. 58) found a layer of ice at depths of 5 to 15 centimeters, Boynton et al. (p. 61) found evidence for the presence of calcium carbonate in the soil, and Hecht et al. (p. 64) found that most of the soluble chlorine at the surface is in the form of perchlorate. Together these results suggest that the soil at the Phoenix landing site must have suffered alteration through the action of liquid water in geologically the recent past. The analysis revealed an alkaline environment, in contrast to that found by the Mars Exploration Rovers, indicating that many different environments have existed on Mars. Phoenix also carried a lidar, an instrument that sends laser light upward into the atmosphere and detects the light scattered back by clouds and dust. An analysis of the data by Whiteway et al. (p. 68) showed that clouds of ice crystals that precipitated back to the surface formed on a daily basis, providing a mechanism to place ice at the surface. Laser remote sensing from Mars’ surface revealed water-ice clouds that formed during the day and precipitated at night. The light detection and ranging instrument on the Phoenix mission observed water-ice clouds in the atmosphere of Mars that were similar to cirrus clouds on Earth. Fall streaks in the cloud structure traced the precipitation of ice crystals toward the ground. Measurements of atmospheric dust indicated that the planetary boundary layer (PBL) on Mars was well mixed, up to heights of around 4 kilometers, by the summer daytime turbulence and convection. The water-ice clouds were detected at the top of the PBL and near the ground each night in late summer after the air temperature started decreasing. The interpretation is that water vapor mixed upward by daytime turbulence and convection forms ice crystal clouds at night that precipitate back toward the surface.
Archive | 2008
Peter A. Taylor; H. P. Gunnlaugsson; C. von Holstein-Rathlou; Carlos F. Lange; John E. Moores; Curtis R. Cook; Cameron S. Dickinson; Vlad Calin Popovici; J. A. Seabrook; James A. Whiteway
Archive | 2009
James Anthony Whiteway; Leonce Komguem; Cameron S. Dickinson; Curtis R. Cook; Thomas J. Duck; Peter A. Taylor; Richard Davy; J. A. Seabrook; David A. Fisher; Allan I. Carswell; Michael George Daly; Vlad Calin Popovici
Archive | 2009
Peter A. Taylor; Wensong Weng; Curtis R. Cook; Cameron S. Dickinson; Ayodeji Akingunola; Jouni Polkko; Henrik Kahanpää
Archive | 2008
James A. Whiteway; Leonce Komguem; Cameron S. Dickinson; Curtis R. Cook; Mike Illnicki; Vlad Calin Popovici; J. A. Seabrook; Michael G. Daly; Allan I. Carswell; Peter A. Taylor; Richard Davy; Jawahar Pathak; Carlos F. Lange; David A. Fisher; V. J. Hipkin; Leslie Kay Tamppari; Mark T. Lemmon; Nilton De Oliveira Renno; H. P. Gunnlaugsson; L. Drube; C. von Holstein-Rathlou; Peter W. H. Smith
Archive | 2008
Cameron S. Dickinson; James Anthony Whiteway; Vlad Calin Popovici; Leonce Komguem; Curtis R. Cook; J. A. Seabrook; Allan I. Carswell; Michael George Daly
Archive | 2002
James Anthony Whiteway; Thomas Choularton; John E. Harries; Mark Gallagher; Keith N. Bower; Reinhold Busen; Curtis R. Cook; D. Figueras-Nieto; M. Flynn; Peter Green; Jorg M. Hacker; J. Semeniuk
Archive | 2009
James Anthony Whiteway; Leonce Komguem; Cameron S. Dickinson; Curtis R. Cook; Mike Illnicki; J. A. Seabrook; Vlad Calin Popovici; Thomas J. Duck; Richard Davy; Peter A. Taylor; Jawahar Pathak; David A. Fisher; Allan I. Carswell; Michael George Daly; V. J. Hipkin; Leslie Kay Tamppari; Nilton De Oliveira Renno; John E. Moores; Mark T. Lemmon; Frank Daerden; Peter W. H. Smith
Archive | 2009
Leonce Komguem; James Anthony Whiteway; Cameron S. Dickinson; Curtis R. Cook; J. A. Seabrook; Vlad Calin Popovici; Peter A. Taylor; Allan I. Carswell; Michael George Daly; Peter W. H. Smith
Archive | 2009
James Anthony Whiteway; Michael George Daly; Allan I. Carswell; Thomas J. Duck; Cameron S. Dickinson; Leonce Komguem; Curtis R. Cook