David Atkinson

University of Victoria

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Jonathan H. Jiang

California Institute of Technology

Chuntao Liu

Texas A&M University – Corpus Christi

Victor P. Pasko

Pennsylvania State University

Ina Tegen

Leibniz Institute for Tropospheric Research

Ben P. Kirtman

University of Miami

Wouter Peters

Wageningen University & Research

Pavlos Kollias

Stony Brook University

Neil M. Donahue

Carnegie Mellon University

G. J. Frost

NOAA Chemical Sciences Laboratory

K. A. Boering

University of California, Berkeley

Cooperative Institutions

John Wiley & Sons (United States)

University of Alaska Fairbanks

Mayo Clinic

Resonance Research (United States)

National Oceanic and Atmospheric Administration

NOAA Physical Sciences Laboratory

Goddard Space Flight Center

University of Colorado Boulder

NSF National Center for Atmospheric Research

Harvard University

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Journal of Geophysical Research Atmospheres (2015)

S. J. Ghan J. H. Crawford Ulrike Langematz Zhanqing Li L. Ruby Leung

No abstract is available for this article.

10.1002/jgrd.51646

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Journal of Geophysical Research Atmospheres (2016)

S. J. Ghan J. H. Crawford Ulrike Langematz Zhanqing Li L. Ruby Leung

Key Points Author order is an ambiguous indicator of contribution Greater clarity is needed The optional CrediT standard provides greater clarity

CLARITY

10.1002/jgrd.v121.14

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An update on circumarctic rates of coastal erosion

Hugues Lantuit Pier Paul Overduin Wayne H. Pollard M. Grigoriev N. Couture

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Supplementary material to "Measurement report: The chemical composition and temporal variability of aerosol particles at Tuktoyaktuk, Canada during the Year of Polar Prediction Special Observing Period"

John J. MacInnis Jai Prakash Chaubey Crystal Weagle David Atkinson Rachel Y.‐W. Chang

10.5194/acp-2021-262-supplement

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Measurement report: The chemical composition and temporal variability of aerosol particles at Tuktoyaktuk, Canada during the Year of Polar Prediction Special Observing Period

John J. MacInnis Jai Prakash Chaubey Crystal Weagle David Atkinson Rachel Y.‐W. Chang

Abstract. The chemical composition, sources, and concentrations of aerosol particles vary on a seasonal basis in the Arctic. While existing research has focused on understanding the occurrence of aerosol particles during the Arctic winter and spring, less is known of their occurrence during the Arctic summer. In this study, atmospheric aerosol particle chemical composition and concentration were determined during July–September 2018 at Tuktoyaktuk, NT, Canada (69.4° N, 133.0° W) to coincide with the Year of Polar Prediction’s 2nd Special Observing Period in the Arctic. The chemical composition of fine (PM2.5) and coarse (PM10-2.5) aerosol filter samples suggests the ocean, mineral/road dust, and combustion were sources of the sampled aerosol particles. Mass concentrations of PM2 and PM10, estimated from optical particle counter measurements, remained within a similar range during the study. However, elevated mass concentrations coincided with a festival in the community of Tuktoyaktuk, suggesting local human activity was an important source of aerosol particles. Mass concentrations of PM2, which promote negative health effects in humans, were significantly lower at Tuktoyaktuk than the national air quality standard recommended by the Government of Canada. These measurements provide an important baseline to compare with future measurements associated with the assessment of aerosol chemistry and air quality in the Arctic.

Mineral dust

Particle (ecology)

10.5194/acp-2021-262

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The National Weather Service Ceilometer Planetary Boundary Layer Project

EPJ Web of Conferences (2016)

M. Hicks David Atkinson Belay Demoz Kevin Vermeesch Rubén Delgado

The National Weather Service (NWS) is investigating the potential of utilizing the Automatic Surface Observing System’s (ASOS) cloud base height indicator, the Vaisala CL31 ceilometer, to profile aerosols in the atmosphere. Field test sites of stand-alone CL31 ceilometers have been established, primarily, around the Washington DC metropolitan area, with additional systems in southwest USA and Puerto Rico. The CL31 PBL project examines the CL31 data collected for data quality, mixing height retrieval applicability, and its compliment to satellite data. This paper reviews the topics of the CL31 data quality and mixing height retrieval applicability.

Ceilometer

National weather service

Surface weather observation

10.1051/epjconf/201611915004

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Citations (10)

CACCON and Partner Knowledge Networks: Arctic Coastal Engagement Network of Future Earth Coasts

Donald L. Forbes Trevor Bell Martin Le Tissier Andrey N. Petrov David Atkinson

The Circumpolar Arctic Coastal Communities Observatory Network (CACCON) functions as the Arctic Regional Engagement Network for Future Earth Coasts. In partnership with other Arctic knowledge networks and programs, including the Exchange for Local Observations and Knowledge of the Arctic (ELOKA) and Arctic-COAST, CACCON promotes consensus and collaboration to advance local knowledge availability and accessibility for adaptation planning and sustainable development in Arctic coastal communities and regions. Components of the CACCON agenda include: integrative analyses of sustainability challenges in Arctic coastal communities using co-developed situational and sustainability indicators; solutions-oriented research for actionable, proactive adaptation policies in Arctic coastal communities; sharing insights among existing community-based research and resilience programs; responding to community-based agendas and building resilience by growing local and regional knowledge co-production and dissemination capacity. These activities support the Global Coastal Futures initiative of Future Earth Coasts, rooted in the Future Earth principles of co-design and co-production of knowledge involving a broad cross-section of stakeholders and consensus-building on pathways for transformation to more sustainable strategies for enhanced present and future well-being on Arctic coasts.

Circumpolar star

Knowledge Sharing

Community Resilience

Traditional Knowledge

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Citations (1)

Regional climate change downscaling for Alaska

AGU Fall Meeting Abstracts (2009)

J. Zhang Uma S. Bhatt J. Krieger Martha Shulski X. Zhang

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Ocean wave conditions in the Chukchi Sea from satellite andin situobservations

Geophysical Research Letters (2011)

Oceana Francis Gleb Panteleev David Atkinson

[1] In situ observation of significant wave heights (SWHs) conducted from three fixed bottom-mounted Recording Doppler Current Profiler (RDCP) instruments in the south-eastern Chukchi Sea in 2007 and 2009 were compared with corresponding satellite observations from Envisat. A strong correlation (0.96) was indicated between satellite andin situobservations for the off-shore RDCP located approximately 82 km to the nearest coastline in the region with uniform topography. However, the corresponding cross-correlations are much lower (0.79 and 0.58) for the RDCPs located within 3.5 km and 10.8 km, respectively, of the nearest coastline probably due to a strong spatial topography gradient and an insufficient number of satellite data points for validation. Cross-validated satellite observations were used for the analysis of wave conditions in the Arctic during the years 1993–2011. We found approximately a 0.020 m/year increase of SWH for the SE Chukchi Sea and a 0.025 m/year increase for the Pacific-Arctic, which correlates well with gradual ice retreat observed in the Arctic during the last two decades.

Significant wave height

Groenlandia

10.1029/2011gl049839

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Citations (64)

Analysis of ²³Na NMR spectra from isolated perfused hearts

Magnetic Resonance in Medicine (1991)

Susan J. Kohler Stanton B. Perry Laura C. Stewart David Atkinson Kieran Clarke

Abstract The 23 Na NMR spectra obtained from isolated hearts perfused with buffer containing the paramagnetic shift reagent dysprosium triethylenetetraminehexaacetic acid, Dy(TTHA) 3− , are complex and contain a number of overlapping peaks of different intensities. Spectra from rat, rabbit, guinea pig, and ferret hearts obtained during periods of control perfusion are similar and undergo similar changes when the hearts are subjected to periods of ischemia and reflow. The contributions from the intracellular, interstitial, vascular, and bath compartments to the multiple peaks in the spectra of rat hearts have been assigned. The significant contributions to these spectra of bulk magnetic susceptibility effects and incomplete mixing have been demonstrated through a series of modeling experiments. Since the spectra from hearts of different species are so similar, the peak assignments made for the rat are applicable to spectra from rabbit, guinea pig, and ferret hearts as well. This work provides a framework for quantitative analysis of the spectral changes which occur during conditions such as ischemia and reflow. © 1991 Academic Press. Inc.

10.1002/mrm.1910180104

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Citations (40)