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Paper Review One-Dimensional Sea Ice-Ocean Model Applied to SHEBA Experiment in 1997-1998 Winter Wen-Yih Sun and Jiun-Dar Chern. Wen-Ien. Introduction. SHEBA : The Surface Heat Budget of the Arctic Ocean The model includes 1. a mixed-layer ocean model,

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Wen ien

Paper ReviewOne-Dimensional Sea Ice-Ocean Model Applied to SHEBA Experiment in 1997-1998 WinterWen-Yih Sun and Jiun-Dar Chern

Wen-Ien


Introduction

Introduction

  • SHEBA: The Surface Heat Budget of the Arctic Ocean

  • The model includes

    1. a mixed-layer ocean model,

    ( used to predict water temp., salinity, density, and

    turbulent kinetic energy )

    2. a multi-layer snow/ice model,

    ( used to predict the thickness, temp., and heat transfer of

    snow/sea ice )

    and the interfaces among atmosphere, snow/sea ice, and sea water.


1 one dim mixed layer ocean model

1. One-Dim. Mixed-Layer Ocean Model

a.

(Salinity)

(Density)

b.

(Energy)

c.

The equations for a one-dimensional ocean model, which include 27 layers.

S: salinity, Δz: layer-thickness, ρ:density, T: water temperature,

c: the specific heat capacity.


A sanity

a.Sanity ( )

1.

Here k-1/2 and k+1/2 stand for the value at the top and bottom of the k- layer.

2. is the eddy flux and is derived from .

: the eddy coefficient

3. : the Newtonian forcing for salinity.


B density

b. Density ( )

1. : the density of sea water, = 1000 and

= 273.15 K.

2.


C energy

c.Energy ( )

1. is the specific heat capacity of sea water.

2 . : the Newtonian forcing for temperature.

3. : the net latent heat released from freezing or melting.

: is the mass loss (gain) due to freeze (melt) at the open

water surface or ice-water interface.

are precipitation rate for rain and snow.

is the new fallen snow density.

4. The freezing point of seawater: .


C energy1

c.Energy

5. H is the heat flux inside the seawater.

Downward Shortwave Radiation

Sensible

Heat Flux

Latent

Heat Flux

Heat Transfer of Precipitation

albedo

Upward and Downward Longwave Radiations

Eddy Heat Flux


C energy2

c.Energy

:wind speed near surface;


To be con tin u ed

ToBe Continued…


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