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High Precision Cutting Tool Tracking With a Magnetic Bearing Spindle

Source: Journal of Dynamic Systems, Measurement, and Control:;2015:;volume( 137 ):;issue: 005:;page 51017

Author(s): Smirnov, Alexander; Pesch, Alexander H.; Pyrhأ¶nen, Olli; Sawicki, Jerzy T.

Publisher: The American Society of Mechanical Engineers (ASME)

Abstract: A method is presented for tool tracking in active magnetic bearing (AMB) spindle applications. The method uses control of the AMB air gap to achieve the desired tool position. The reference tracking problem is transformed ...

A Study of Global Aerosol Optical Climatology with Two-Channel AVHRR Remote Sensing

Source: Journal of Climate:;2000:;volume( 013 ):;issue: 012:;page 2011

Author(s): Higurashi, Akiko; Nakajima, Teruyuki; Holben, Brent N.; Smirnov, Alexander; Frouin, Robert; Chatenet, Bernadette

Publisher: American Meteorological Society

Abstract: Global distributions of the aerosol optical thickness and Ångström exponent are estimated from National Oceanic and Atmospheric Administration Advanced Very High Resolution Radiometer channel-1 and -2 radiances for four ...

Optical Properties of Atmospheric Aerosol in Maritime Environments

Source: Journal of the Atmospheric Sciences:;2002:;Volume( 059 ):;issue: 003:;page 501

Author(s): Smirnov, Alexander; Holben, Brent N.; Kaufman, Yoram J.; Dubovik, Oleg; Eck, Thomas F.; Slutsker, Ilya; Pietras, Christophe; Halthore, Rangasayi N.

Publisher: American Meteorological Society

Abstract: Systematic characterization of aerosol over the oceans is needed to understand the aerosol effect on climate and on transport of pollutants between continents. Reported are the results of a comprehensive optical and physical ...

Development of a Global Validation Package for Satellite Oceanic Aerosol Optical Thickness Retrieval Based on AERONET Observations and Its Application to NOAA/NESDIS Operational Aerosol Retrievals

Source: Journal of the Atmospheric Sciences:;2002:;Volume( 059 ):;issue: 003:;page 294

Author(s): Zhao, Tom X-P.; Stowe, Larry L.; Smirnov, Alexander; Crosby, David; Sapper, John; McClain, Charles R.

Publisher: American Meteorological Society

Abstract: In this paper, a global validation package for satellite aerosol optical thickness retrieval using the Aerosol Robotic Network (AERONET) observations as ground truth is described. To standardize the validation procedure, ...

Variability of Absorption and Optical Properties of Key Aerosol Types Observed in Worldwide Locations

Source: Journal of the Atmospheric Sciences:;2002:;Volume( 059 ):;issue: 003:;page 590

Author(s): Dubovik, Oleg; Holben, Brent; Eck, Thomas F.; Smirnov, Alexander; Kaufman, Yoram J.; King, Michael D.; Tanré, Didier; Slutsker, Ilya

Publisher: American Meteorological Society

Abstract: Aerosol radiative forcing is a critical, though variable and uncertain, component of the global climate. Yet climate models rely on sparse information of the aerosol optical properties. In situ measurements, though important ...

Arctic Ocean Heat Impact on Regional Ice Decay: A Suggested Positive Feedback

Source: Journal of Physical Oceanography:;2015:;Volume( 046 ):;issue: 005:;page 1437

Author(s): Ivanov, Vladimir; Alexeev, Vladimir; Koldunov, Nikolay V.; Repina, Irina; Sandø, Anne Britt; Smedsrud, Lars Henrik; Smirnov, Alexander

Publisher: American Meteorological Society

Abstract: road, long-living, ice-free areas in midwinter northeast of Svalbard between 2011 and 2014 are investigated. The formation of these persistent and reemerging anomalies is linked, hypothetically, with the increased seasonality ...

Atmospheric Aerosol Optical Properties in the Persian Gulf

Source: Journal of the Atmospheric Sciences:;2002:;Volume( 059 ):;issue: 003:;page 620

Author(s): Smirnov, Alexander; Holben, Brent N.; Dubovik, Oleg; O'Neill, Norm T.; Eck, Thomas F.; Westphal, Douglas L.; Goroch, Andreas K.; Pietras, Christophe; Slutsker, Ilya

Publisher: American Meteorological Society

Abstract: Aerosol optical depth measurements over Bahrain acquired through the ground-based Aerosol Robotic Network (AERONET) are analyzed. Optical depths obtained from ground-based sun/sky radiometers showed a pronounced temporal ...

Multiyear Observations of the Tropical Atlantic Atmosphere: Multidisciplinary Applications of the NOAA Aerosols and Ocean Science Expeditions

Source: Bulletin of the American Meteorological Society:;2011:;volume( 092 ):;issue: 006:;page 765

Author(s): Nalli, Nicholas R.; Joseph, Everette; Morris, Vernon R.; Barnet, Christopher D.; Wolf, Walter W.; Wolfe, Daniel; Minnett, Peter J.; Szczodrak, Malgorzata; Izaguirre, Miguel A.; Lumpkin, Rick; Xie, Hua; Smirnov, Alexander; King, Thomas S.; Wei, Jennifer

Publisher: American Meteorological Society

Abstract: r gives an overview of a unique set of ship-based atmospheric data acquired over the tropical Atlantic Ocean during boreal spring and summer as part of ongoing National Oceanic and Atmospheric Administration (NOAA) Aerosols ...

MISR Calibration and Implications for Low-Light-Level Aerosol Retrieval over Dark Water

Source: Journal of the Atmospheric Sciences:;2005:;Volume( 062 ):;issue: 004:;page 1032

Author(s): Kahn, Ralph; Li, Wen-Hao; Martonchik, John V.; Bruegge, Carol J.; Diner, David J.; Gaitley, Barbara J.; Abdou, Wedad; Dubovik, Oleg; Holben, Brent; Smirnov, Alexander; Jin, Zhonghai; Clark, Dennis

Publisher: American Meteorological Society

Abstract: Studying aerosols over ocean is one goal of the Multiangle Imaging Spectroradiometer (MISR) and other spaceborne imaging systems. But top-of-atmosphere equivalent reflectance typically falls in the range of 0.03 to 0.12 ...