-OASIM_Total_Downwell_Irradiance_Mar_1990_UK.eps Global distribution of total surface downwelling irradiance (0-) for Mar1990 calculated locally using OASIM. Gregg & Casey [2009]. -OASIM_Total_Downwell_Irradiance_Mar_1990_Gregg.eps Global distribution of total surface downwelling irradiance (0-) for Mar1990 downloaded from OASIM website. -DIFF_OASIM_Total_Downwell_Irradiance_Mar_1990_UK-Gregg.eps Difference between the above two fields. It indicates that the OASIM model code works OK on the local computer for the data sets for 1979-1992. ------------------------------------------------------------------------ -OASIM_Total_Downwell_Irradiance_Aug_2000_UK.eps Global distribution of total surface downwelling irradiance (0-) for Aug2000 calculated locally using OASIM. -OASIM_Total_Downwell_Irradiance_Aug_2000_Gregg.eps Global distribution of total surface downwelling irradiance (0-) for Aug2000 downloaded from OASIM website. -DIFF_OASIM_Total_Downwell_Irradiance_Mar_1990_UK-Gregg.eps Difference between the above two fields. The OASIM model code downloaded from the website doesn't produce the same results on the local computer indicating that the model codes used to produce the data files for 1993-2006 are not the same as the codes that were used to generate the data sets for 1979-1992. ------------------------------------------------------------------------ -Downwell_Direct_Solar_Irrad_Ed0+_01aug2000_allspct.eps Global distribution of downwelling direct irradiance at the surface (0+) for 01aug2000 (W/m2) calculated locally using OASIM. -Downwell_Diffuse_Solar_Irrad_Es0+_01aug2000_allspct.eps Global distribution of downwelling diffuse irradiance at the surface (0+) for 01aug2000 (W/m2) calculated locally using OASIM. -Total_Downwell_Solar_Irrad_Ed+Es0+_01aug2000_allspct.eps Global distribution of total (direct+diffuse) downwelling irradiance at the surface (0+) for 01aug2000 (W/m2) calculated locally using OASIM. -Total_Downwell_Solar_Irrad_Ed+Es0+_13h01aug2000_allspct.eps Global distribution of total (direct+diffuse) downwelling irradiance at the surface (0+) for 13h01aug2000 (W/m2) calculated locally using OASIM. ------------------------------------------------------------------------ -OASIM_PAR_Aug2000_uk.eps Global distribution of surface PAR (photons/(m2 d)) for Aug2000 calculated locally using OASIM, corresponding to the top frame in Fig.11 [Gregg & Casey, 2009]. Coding errors in calculation of cloudy transmission caused the noisey PAR field. -Sfc_PAR_350-700_01aug2000.eps Global distribution of surface PAR (photons/(m2 d)) calculated locally using OASIM for 01aug2000. Coding errors have been fixed. ------------------------------------------------------------------------ -Spect_Reflect_R_Morel_Fig.A2.eps Spectral values of the reflectance for varing mean pigment concentration in case I waters and at null depth. The pigment concentrations are 0.02, 0.05 ,0.1, 0.2, 0.5, 1, 2, 5, 10, and 20 mg/m3, used in Fig. A2 in Morel & Antoine [1994]. Eqs.(15), (16), ... in Morel [1988] were used to calculate the reflectance. The fig agrees well to Fig. A2 in Morel & Antoine [1994]. -Ratio_Reflect_Morel_Gentili_Figs.7-8.eps Ratio of the reflectances for Sun-zenith angles to the reflectances when sun-zenith angle = 0 plotted as a function of cos(sun-zenith angle). Fig. 7(a), Fig. 8(a), and Table II in Morel & Gentili [1991].The figs show no kinks seen in Morel & Gentili [1991], otherwise the agreement is good. -Factor_Gamma_Morel_Gentili_Figs.7-8.eps The f factor [Eqs.(13) & (14)] in Morel & Gentili [1991] or gamma factor [Eq.(6)] in Frouin & Iacoblllis [2002] as a function of cos(sun-zenith angle). The figs Correspond to Fig. 7(b), Fig. 8(b), and Table II in Morel & Gentili [1991]. The figs show no kinks seen in Morel & Gentili [1991], otherwise the agreement is good. ------------------------------------------------------------------------ -log10_Chl_Aug2000_90S-90N_1x1.eps Global distribution of SeaWiFS chlorophyll pigment concentration on 1 deg X 1 deg lon-lat grid for Aug2000. Units are log10(chl mg/m^3). ------------------------------------------------------------------------ -Diffu_Reflect_R_Morel_SeaWIFS_Chl_01aug2000_zavtav.eps Mean diffuse reflectance (0+) as a function of the SeaWiFS chlorophyll pigment concentration and for the spectral domain 350-700nm (spectral range used for PAR in Gregg & Casey [2009]) using Eq. (15) in Morel & Antoine [1994]. OASIM total irradiance (Ed+Es) was used as weighting function. The spectral irradiance at a given local time was used as weighting function to calculate the average value of R(0+) over the spectral domain 350-700nm at that local time and then the time average of the reflectance for the day was calculated counting only the times when the reflectance is non-zero (ie daytime hours only). [No sun-zenith angle is involved in the calculation of spectral diffuse reflectance while OASIM irradiance uses sun-zenith angle.] ------------------------------------------------------------------------ -Diffu_Albedo_Aw_SeaWIFS_Chl_01-11h01aug2000_zavtav.eps The diffuse albedo of the seawater at local time 01h,03h,05h,07h,09h, and 13h with the SeaWiFS chlorophyll pigment concentration and for the spectral domain 350-700nm using Eqs.(4)-(8) of Frouin & Iacobells [2002]. OASIM total spectral irradiance (Ed(0+)+Es(0+)) at given time was used as weighting function. Here no time averaging is involved in Figs. Color scales/bars vary from fig to fig. -Diffu_Albedo_Aw_SeaWIFS_Chl_13-23h01aug2000_zavtav.eps As in Diffu_Albedo_Aw_SeaWIFS_Chl_01-11h01aug2000_zavtav.eps but at local time 15h,17h,19h,21h, and 23h. -Diffu_Albedo_Aw_SeaWIFS_Chl_dayave_01aug2000_zavtav.eps The diffuse albedo of the seawater for 01aug2000 calculated from (local) 2-hourly (spectrally integrated with irradiance as weighting function) albedo fields described above. Meridional discontinuities are observed which may/may not diminish if 1-hourly results ( rather than 2-hourly) are used. ------------------------------------------------------------------------ -Direct_Sfc_Reflect_Gregg_13h01aug2000_zav.eps Direct surface reflectance, the sum of specular and foam contributions, at local 13h01aug2000, calculated using Eq.(A14) in Gregg & Casey [2009] from OASIM. . -Direct_Sfc_Reflect_Gregg_01aug2000_zavtav.eps Direct surface reflectance, the sum of specular and foam contributions, for 01aug2000, calculated using Eq.(A14) in Gregg & Casey [2009] from OASIM. Meridonal discontinuities result when the mean direct surface reflectance for the day is produced from 2-hourly reflectance. The time average of the reflectance for the day was calculated counting only the times when the reflectance is non-zero (ie daytime hours only). -Diffuse_Sfc_Reflect_Gregg_13h01aug2000_zav.eps Diffuse surface reflectance, the sum of specular and foam contributions, for 01aug2000, calculated using Eq.(A15) in Gregg & Casey [2009] from OASIM. The effects of the wind speed are obsered in the Southern Ocean. Discontinuities in the definition of the diffuse specular reflectance (0.066 for wind speed < 4m/s, and 0.057 otherwise) [Gregg & Carder, 1990] cause the discontinuities in the field of diffuse surface reflectance. -Diffuse_Sfc_Reflect_Gregg_01aug2000_zavtav.eps Diffuse surface reflectance, the sum of specular and foam contributions, at local 13h01aug2000, calculated using Eq.(A15) in Gregg & Casey [2009] from OASIM. The effects of the wind speed are obsered in the Southern Ocean. -Wind_speed_Aug2000.eps Global distribution of the wind speed for Aug2000. Diffuse surface reflectances resemble to the wind speed pattern where the wind speed is larger than 4m/s. ------------------------------------------------------------------------