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    A Comparison of Radiation Budgets in the Fram Strait Summer Marginal Ice Zone

    Source: Journal of Climate:;1991:;volume( 004 ):;issue: 002::page 218
    Author:
    Francis, Jennifer A.
    ,
    Ackerman, Thomas P.
    ,
    Katsaros, Kristina B.
    ,
    Lind, Richard J.
    ,
    Davidson, Kenneth L.
    DOI: 10.1175/1520-0442(1991)004<0218:ACORBI>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Measurements of surface radiation fluxes and meteorological conditions collected in the Fram Strait during the summer 1984 Marginal Ice Zone Experiment (MIZEX) are presented and analyzed. These data were combined with calculations from a radiative transfer model to estimate surface and atmospheric moan radiation budgets on a daily basis and for the early summer season over both sea ice and open water in the marginal ice zone (MIZ). Intensities of solar and infrared fluxes within the atmospheric column, radiative properties of Arctic stratus, and atmospheric cooling rates due to the net loss of radiation were computed by the model. Results show significant differences between the radiation budgets of sea-ice and open-water regimes in the MIZ. Fluxes averaged over the experimental period (16 June to 10 July) indicate that the atmosphere-open water system gained approximately 60 W m?2, while the atmosphere-ice regime was nearly in equilibrium. The open water absorbed twice as much radiation as did the ice, and the mean cooling rate of the over-water atmosphere was approximately 15% larger than that over ice. Observations and model calculations agree that the effect of varying surface albedo on flux intensities is significantly reduced in overcast conditions as compared to under clear skies. Fluxes and atmospheric cooling rates were compared to values computed by other investigators. Few studies of Arctic radiation exist due to the dearth of observations from polar regions, but available values compare well with those derived from MIZEX data. Cooling rates calculated for the Farm Strait MIZ are twice as large as estimates for the central Arctic in summer. Evidence suggests that this cooling may be offset by a relatively strong poleward atmospheric advection of sensible and latent heat from the Norwegian Sea area.
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      A Comparison of Radiation Budgets in the Fram Strait Summer Marginal Ice Zone

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4176033
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    • Journal of Climate

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    contributor authorFrancis, Jennifer A.
    contributor authorAckerman, Thomas P.
    contributor authorKatsaros, Kristina B.
    contributor authorLind, Richard J.
    contributor authorDavidson, Kenneth L.
    date accessioned2017-06-09T15:13:38Z
    date available2017-06-09T15:13:38Z
    date copyright1991/02/01
    date issued1991
    identifier issn0894-8755
    identifier otherams-3787.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4176033
    description abstractMeasurements of surface radiation fluxes and meteorological conditions collected in the Fram Strait during the summer 1984 Marginal Ice Zone Experiment (MIZEX) are presented and analyzed. These data were combined with calculations from a radiative transfer model to estimate surface and atmospheric moan radiation budgets on a daily basis and for the early summer season over both sea ice and open water in the marginal ice zone (MIZ). Intensities of solar and infrared fluxes within the atmospheric column, radiative properties of Arctic stratus, and atmospheric cooling rates due to the net loss of radiation were computed by the model. Results show significant differences between the radiation budgets of sea-ice and open-water regimes in the MIZ. Fluxes averaged over the experimental period (16 June to 10 July) indicate that the atmosphere-open water system gained approximately 60 W m?2, while the atmosphere-ice regime was nearly in equilibrium. The open water absorbed twice as much radiation as did the ice, and the mean cooling rate of the over-water atmosphere was approximately 15% larger than that over ice. Observations and model calculations agree that the effect of varying surface albedo on flux intensities is significantly reduced in overcast conditions as compared to under clear skies. Fluxes and atmospheric cooling rates were compared to values computed by other investigators. Few studies of Arctic radiation exist due to the dearth of observations from polar regions, but available values compare well with those derived from MIZEX data. Cooling rates calculated for the Farm Strait MIZ are twice as large as estimates for the central Arctic in summer. Evidence suggests that this cooling may be offset by a relatively strong poleward atmospheric advection of sensible and latent heat from the Norwegian Sea area.
    publisherAmerican Meteorological Society
    titleA Comparison of Radiation Budgets in the Fram Strait Summer Marginal Ice Zone
    typeJournal Paper
    journal volume4
    journal issue2
    journal titleJournal of Climate
    identifier doi10.1175/1520-0442(1991)004<0218:ACORBI>2.0.CO;2
    journal fristpage218
    journal lastpage235
    treeJournal of Climate:;1991:;volume( 004 ):;issue: 002
    contenttypeFulltext
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