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    Academic Journals

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• Analyzing ozone variations and uncertainties at high latitudes during sudden stratospheric warming events using MERRA-2.

  Authors:Shima Bahramvash Shams, Von P. Walden, James W. Hannigan, William J. Randel, Irina V. Petropavlovskikh, Amy H. Butler, et al.From:Atmospheric Chemistry and Physics (Vol. 22, Issue 8) Peer-Reviewed

  Apr. 25, 2022356 words Brief article Stratospheric circulation is a critical part of the Arctic ozone cycle. Sudden stratospheric warming events (SSWs) manifest the strongest alteration of stratospheric dynamics. During SSWs, changes in planetary wave...

• Controls on surface aerosol particle number concentrations and aerosol-limited cloud regimes over the central Greenland Ice Sheet.

  Authors:Heather Guy, Ian M. Brooks, Ken S. Carslaw, Benjamin J. Murray, Von P. Walden, Matthew D. Shupe, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 19) Peer-Reviewed

  Oct. 14, 2021245 words Brief article This study presents the first full annual cycle (2019-2020) of ambient surface aerosol particle number concentration measurements (condensation nuclei 20 nm, N.sub.20) collected at Summit Station (Summit), in the centre...

• Clouds at Arctic atmospheric observatories. Part I: occurrence and macrophysical properties

  Authors:Matthew D. Shupe, Von P. Walden, Edwin Eloranta, Taneil Uttal, James R. Campbell, Sandra M. Starkweather, et al.From:Journal of Applied Meteorology and Climatology (Vol. 50, Issue 3) Peer-Reviewed

  Mar. 2011229 words Author abstract, Rep...

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• Seasonal and synoptic variations in near-surface air temperature lapse rates in a mountainous basin

  Authors:Troy R. Blanford, Karen S. Humes, Brian J. Harshburger, Brandon C. Moore, Von P. Walden, and Hengchun YeFrom:Journal of Applied Meteorology and Climatology (Vol. 47, Issue 1) Peer-Reviewed

  Jan. 2008322 words Report

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• Measurements of the foreign-broadened continuum of water vapor in the 6.3 [micro]m band at -30 [degrees]C

  Authors:Penny M. Rowe, Von P. Walden, and Stephen G. WarrenFrom:Applied Optics (Vol. 45, Issue 18) Peer-Reviewed

  June 20, 2006116 words Author abstract 60L

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• Atmospheric ice crystals over the Antarctic Plateau in winter

  Authors:Von P. Walden, Stephen G. Warren, and Elizabeth TuttleFrom:Journal of Applied Meteorology (Vol. 42, Issue 10) Peer-Reviewed

  Oct. 2003358 words Author abstract

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• Supercooled liquid fogs over the central Greenland Ice Sheet

  Authors:Christopher J. Cox, David C. Noone, Max Berkelhammer, Matthew D. Shupe, William D. Neff, Nathaniel B. Miller, et al.From:Atmospheric Chemistry and Physics (Vol. 19, Issue 11) Peer-Reviewed

  June 5, 2019413 words Author abstract, Bri...

  Radiation fogs at Summit Station, Greenland (72.58.sup.∘  N, 38.48.sup.∘  W; 3210 m a.s.l.), are frequently reported by observers. The fogs are often...

• A synthetic data set of high-spectral-resolution infrared spectra for the Arctic atmosphere

  Authors:Christopher J. Cox, Penny M. Rowe, Steven P. Neshyba, and Von P. WaldenFrom:Earth System Science Data (Vol. 8, Issue 1) Peer-Reviewed

  May 12, 2016269 words Brief article Cloud microphysical and macrophysical properties are critical for understanding the role of clouds in climate. These properties are commonly retrieved from ground-based and satellite-based infrared remote sensing...

• High and dry: new observations of tropospheric and cloud properties above the Greenland Ice Sheet

  Authors:Matthew D. Shupe, David D. Turner, Von P. Walden, Ralf Bennartz, Maria P. Cadeddu, Benjamin B. Castellani, et al.From:Bulletin of the American Meteorological Society (Vol. 94, Issue 2) Peer-Reviewed

  Feb. 2013241 words Author abstract

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• Ground-Based Infrared Remote Sensing of Cloud Properties over the Antarctic Plateau. Part II: Cloud Optical Depths and Particle Sizes

  Authors:ASHWIN MAHESH, VON P. WALDEN, and STEPHEN G. WARRENFrom:Journal of Applied Meteorology (Vol. 40, Issue 7) Peer-Reviewed

  July 2001370 words Article

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• Cloud microphysical properties retrieved from downwelling infrared radiance measurements made at Eureka, Nunavut, Canada (2006-09)

  Authors:Christopher J. Cox, David D. Turner, Penny M. Rowe, Matthew D. Shupe, and Von P. WaldenFrom:Journal of Applied Meteorology and Climatology (Vol. 53, Issue 3) Peer-Reviewed

  Mar. 2014252 words Author abstract, Rep...

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• Infrared radiance spectra for testing radiative transfer models in cold and dry atmospheres: test cases from the Antarctic Plateau

  Authors:Von P. Walden, Stephen G. Warren, Frank J. Murcray, and Robert G. EllingsonFrom:Bulletin of the American Meteorological Society (Vol. 78, Issue 10) Peer-Reviewed

  Oct. 199783 words Letter to the editor

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• Ground-Based Infrared Remote Sensing of Cloud Properties over the Antarctic Plateau. Part I: Cloud-Base Heights

  Authors:ASHWIN MAHESH, VON P. WALDEN, and STEPHEN G. WARRENFrom:Journal of Applied Meteorology (Vol. 40, Issue 7) Peer-Reviewed

  July 2001223 words Article

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• Improved measurements of the foreign-broadened continuum of water vapor in the 6.3 [micro]m band at -30[degrees]C

  Authors:Penny M. Rowe and Von P. WaldenFrom:Applied Optics (Vol. 48, Issue 7) Peer-Reviewed

  Mar. 1, 2009123 words Author abstract, Rep...

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• Toward autonomous surface-based infrared remote sensing of polar clouds: retrievals of cloud optical and microphysical properties

  Authors:Penny M. Rowe, Christopher J. Cox, Steven Neshyba, and Von P. WaldenFrom:Atmospheric Measurement Techniques (Vol. 12, Issue 9) Peer-Reviewed

  Sept. 23, 2019291 words Brief article, Techn...

  Improvements to climate model results in polar regions require improved knowledge of cloud properties. Surface-based infrared (IR) radiance spectrometers have been used to retrieve cloud properties in polar regions,...

• Variations in the vertical profile of ozone at four high-latitude Arctic sites from 2005 to 2017

  Authors:Shima Bahramvash Shams, Von P. Walden, Irina Petropavlovskikh, David Tarasick, Rigel Kivi, Samuel Oltmans, et al.From:Atmospheric Chemistry and Physics (Vol. 19, Issue 15) Peer-Reviewed

  Aug. 2, 2019442 words Brief article

  Understanding variations in atmospheric ozone in the Arctic is difficult because there are only a few long-term records of vertical ozone profiles in this region. We present 12 years of ozone profiles from February...

• Toward autonomous surface-based infrared remote sensing of polar clouds: cloud-height retrievals

  Authors:Penny M. Rowe, Christopher J. Cox, and Von P. WaldenFrom:Atmospheric Measurement Techniques (Vol. 9, Issue 8) Peer-Reviewed

  Aug. 9, 2016296 words Brief article Polar regions are characterized by their remoteness, making measurements challenging, but an improved knowledge of clouds and radiation is necessary to understand polar climate change. Infrared radiance spectrometers...

• Precipitation regimes over central Greenland inferred from 5 years of ICECAPS observations

  Authors:Claire Pettersen, Ralf Bennartz, Aronne J. Merrelli, Matthew D. Shupe, David D. Turner, and Von P. WaldenFrom:Atmospheric Chemistry and Physics (Vol. 18, Issue 7) Peer-Reviewed

  Apr. 9, 2018316 words Author abstract, Bri... A novel method for classifying Arctic precipitation using ground based remote sensors is presented. Using differences in the spectral variation of microwave absorption and scattering properties of cloud liquid water and...