Search Results - "Ehn, J"

Optical characterisation of suspended particles in the Mackenzie River plume (Canadian Arctic Ocean) and implications for ocean colour remote sensing by Doxaran, D, Ehn, J, Bélanger, S, Matsuoka, A, Hooker, S, Babin, M

“…Climate change significantly impacts Arctic shelf regions in terms of air temperature, ultraviolet radiation, melting of sea ice, precipitation, thawing of…”
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Increasing Mobility of High Arctic Sea Ice Increases Marine Hazards Off the East Coast of Newfoundland by Barber, D. G., Babb, D. G., Ehn, J. K., Chan, W., Matthes, L., Dalman, L. A., Campbell, Y., Harasyn, M. L., Firoozy, N., Theriault, N., Lukovich, J. V., Zagon, T., Papakyriakou, T., Capelle, D. W., Forest, A., Gariepy, A.

“…Heavy ice conditions along Canada's east coast during spring 2017 presented hazardous conditions for the maritime industry and required the Canadian Coast…”
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Role of River Runoff and Sea Ice Brine Rejection in Controlling Stratification Throughout Winter in Southeast Hudson Bay by Eastwood, Rosemary Ann, Macdonald, R. W., Ehn, J. K., Heath, J., Arragutainaq, L., Myers, P. G., Barber, D. G., Kuzyk, Z. A.

“…The Hudson Bay system is undergoing climate-driven changes in sea ice and freshwater inflow and has seen an increase in winter river inflow since the 1960s due…”
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Spatial and temporal variability of sea ice in the southern Beaufort Sea and Amundsen Gulf: 1980–2004 by Galley, R. J., Key, E., Barber, D. G., Hwang, B. J., Ehn, J. K.

“…Changing extent, location, and motion of the Arctic perennial pack affect the annual evolution of seasonal ice zones. Canadian Ice Service digital ice charts…”
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Pigment composition and photoprotection of Arctic sea ice algae during spring by Galindo, Virginie, Gosselin, Michel, Lavaud, Johann, Mundy, Christopher John, Else, Brent, Ehn, Jens, Babin, Marcel, Rysgaard, Søren

“…From the beginning of spring to the melt period, ice algae in the bottom of Arctic sea ice experience a large irradiance range, varying from <0.1% up to 25–30%…”
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Frost flowers on young Arctic sea ice: The climatic, chemical, and microbial significance of an emerging ice type by Barber, D. G., Ehn, J. K., Pućko, M., Rysgaard, S., Deming, J. W., Bowman, J. S., Papakyriakou, T., Galley, R. J., Søgaard, D. H.

“…Ongoing changes in Arctic sea ice are increasing the spatial and temporal range of young sea ice types over which frost flowers can occur, yet the significance…”
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Influence of snow cover and algae on the spectral dependence of transmitted irradiance through Arctic landfast first-year sea ice by Mundy, C. J., Ehn, J. K., Barber, D. G., Michel, C.

“…Extensive spatial and temporal observations of sea ice algae remain limited due in part to current destructive and time intensive sampling techniques. In this…”
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Spatial Heterogeneity as a Key Variable Influencing Spring-Summer Progression in UVR and PAR Transmission Through Arctic Sea Ice by Matthes, Lisa C., Mundy, C. J., L.-Girard, S., Babin, M., Verin, G., Ehn, J. K.

“…The transmission of ultraviolet (UVR) and photosynthetically available radiation (PAR) through sea ice is a key factor controlling under-ice phytoplankton…”
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Light absorption and partitioning in Arctic Ocean surface waters: impact of multiyear ice melting by Bélanger, S, Cizmeli, S. A, Ehn, J, Matsuoka, A, Doxaran, D, Hooker, S, Babin, M

“…Ice melting in the Arctic Ocean exposes the surface water to more radiative energy with poorly understood effects on photo-biogeochemical processes and heat…”
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Average cosine coefficient and spectral distribution of the light field under sea ice: Implications for primary production by Matthes, L. C., Ehn, J. K., L.-Girard, S., Pogorzelec, N. M., Babin, M., Mundy, C. J.

“…The Arctic spring phytoplankton bloom has been reported to commence under a melting sea ice cover as transmission of photosynthetically active radiation (PAR;…”
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Environmental factors influencing the seasonal dynamics of spring algal blooms in and beneath sea ice in western Baffin Bay by Oziel, L., Massicotte, P., Randelhoff, A., Ferland, J., Vladoiu, A., Lacour, L., Galindo, V., Lambert-Girard, S., Dumont, D., Cuypers, Y., Bouruet-Aubertot, P., Mundy, C.-J., Ehn, J., Bécu, G., Marec, C., Forget, M.-H., Garcia, N., Coupel, P., Raimbault, P., Houssais, M.-N., Babin, M.

“…Arctic sea ice is experiencing a shorter growth season and an earlier ice melt onset. The significance of spring microalgal blooms taking place prior to sea…”
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Inference of optical properties from radiation profiles within melting landfast sea ice by Ehn, J. K., Papakyriakou, T. N., Barber, D. G.

“…Vertical in‐ice spectral radiation profiles were measured within melting 1.5‐ to 1.7‐m‐thick landfast sea ice in western Hudson Bay on 25 April 2005. Because…”
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Ikaite crystal distribution in winter sea ice and implications for CO2 system dynamics by Rysgaard, S, Søgaard, D H, Cooper, M, Pu&cacute, M, Lennert, ko;K, Papakyriakou, T N, Wang, F, Geilfus, N X, Glud, R N, Ehn, J, McGinnis, D F, Attard, K, Sievers, J, Deming, J W, Barber, D

“…The precipitation of ikaite (CaCO3 [sm middot] 6H2 O) in polar sea ice is critical to the efficiency of the sea ice-driven carbon pump and potentially…”
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The Stepwise Reduction of Multiyear Sea Ice Area in the Arctic Ocean Since 1980 by Babb, D. G., Galley, R. J., Kirillov, S., Landy, J. C., Howell, S. E. L., Stroeve, J. C., Meier, W., Ehn, J. K., Barber, D. G.

“…Abstract The loss of multiyear sea ice (MYI) in the Arctic Ocean is a significant change that affects all facets of the Arctic environment. Using a Lagrangian…”
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Environmental drivers of spring primary production in Hudson Bay by Matthes, L. C., Ehn, J. K., Dalman, L. A., Babb, D. G., Peeken, I., Harasyn, M., Kirillov, S., Lee, J., Bélanger, S., Tremblay, J.-É., Barber, D. G., Mundy, C. J.

“…Pertinent environmental factors influencing the microalgal bloom during sea-ice breakup in Hudson Bay were investigated in June 2018, producing the first…”
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Atmospheric Forcing Drives the Winter Sea Ice Thickness Asymmetry of Hudson Bay by Kirillov, S., Babb, D., Dmitrenko, I., Landy, J., Lukovich, J., Ehn, J., Sydor, K., Barber, D., Stroeve, J.

“…Recently, we highlighted the presence of a strong west‐east asymmetry in sea ice thickness across Hudson Bay that is driven by cyclonic circulation. Building…”
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On the Physical Settings of Ice Bridge Formation in Nares Strait by Kirillov, S., Babb, D. G., Komarov, A. S., Dmitrenko, I., Ehn, J. K., Worden, E., Candlish, L., Rysgaard, S., Barber, D. G.

“…The ice bridge that forms seasonally across Nares Strait impedes the southward transport of sea ice from the Lincoln Sea to Baffin Bay and contributes to the…”
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Sediment-laden sea ice in southern Hudson Bay: Entrainment, transport, and biogeochemical implications by Barber, D. G., Harasyn, M. L., Babb, D. G., Capelle, D., McCullough, G., Dalman, L. A., Matthes, L. C., Ehn, J. K., Kirillov, S., Kuzyk, Z., Basu, A., Fayak, M., Schembri, S., Papkyriakou, T., Ahmed, M. M. M., Else, B., Guéguen, C., Meilleur, C., Dmitrenko, I., Mundy, C. J., Gupta, K., Rysgaard, S., Stroeve, J., Sydor, K.

“…During a research expedition in Hudson Bay in June 2018, vast areas of thick (>10 m), deformed sediment-laden sea ice were encountered unexpectedly in southern…”
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Sea Ice Dynamics in Hudson Strait and Its Impact on Winter Shipping Operations by Babb, D. G., Kirillov, S., Galley, R. J., Straneo, F., Ehn, J. K., Howell, S. E. L., Brady, M., Ridenour, N. A., Barber, D. G.

“…Hudson Strait is seasonally ice covered and is the only part of the Canadian Arctic where winter shipping takes place. Yet, very little is known about the…”
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The Inferred Formation of a Subice Platelet Layer Below the Multiyear Landfast Sea Ice in the Wandel Sea (NE Greenland) Induced by Meltwater Drainage by Kirillov, S., Dmitrenko, I., Rysgaard, S., Babb, D., Ehn, J., Bendtsen, J., Boone, W., Barber, D., Geilfus, N.

“…Oceanographic and ice‐mass‐balance records are presented from two moorings deployed on landfast multiyear ice in the Wandel Sea (North Greenland) during…”
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