7/19/11

Venice

• Rehearsal

• July 10th, 2011 image

• GTP access has been down since Friday (July 15th)

Chlorophyll-a and a_443 Image Difference and scatter plot examples

7/19/11

July 10, 2011 VIIR and MODIS processed

VIIRS MODIS

Example of Chlorophyll. All products processed

Remote sensing reflectance.

http://www7333.nrlssc.navy.mil/browse/lvl3/viirs/AAOT/2011/jul/?F=1&C=N&O=A&V=0&P=*chl**

http://www7333.nrlssc.navy.mil/browse/lvl3/modis/AAOT/2011/jul/?F=1&C=N&O=A&V=0&P=*chl*

Click to edit Master subtitle style

7/19/11

Difference Plot July 10, 2011 - Venice Scatter plot MODIS Chl - VIIRS Chl

MODIS Chlor

MODIS – Chl mg/ m^3

VIIR

S –

CHL

http://www7333.nrlssc.navy.mil/browse/lvl5/modis-viirs/AAOT/2011/jul/?F=1&C=N&O=A&V=0&P=*chl*eps

7/19/11

July 10, 2011 VIIR and MODIS processed

VIIRS MODIS

Example of a_443 (QAA). All products processed

Remote sensing reflectance.

http://www7333.nrlssc.navy.mil/browse/lvl3/viirs/AAOT/2011/jul/?F=1&C=N&O=A&V=0&P=*chl**

http://www7333.nrlssc.navy.mil/browse/lvl3/modis/AAOT/2011/jul/?F=1&C=N&O=A&V=0&P=*chl*

Click to edit Master subtitle style

7/19/11

Difference Plot July 10, 2011 - Venice Scatter plot MODIS a_443 - VIIRS

a_443

MODIS a_443 – VIIRS a_443 (QAA)

MODIS – Chl mg/ m^3

VIIR

S –

CHL

http://www7333.nrlssc.navy.mil/browse/lvl5/modis-viirs/AAOT/2011/jul/?F=1&C=N&O=A&V=0&P=*chl*eps

7/19/11

Probability Distribution of the Difference

7/19/11

0 2 4 6 8 10 120.850000000000001

0.900000000000001

0.950000000000001

1

1.05

1.1

1.15

Top of Atm - Vicarious Adjustment AAOT - Aeronet VIIRS

Julian Day 2011

Gain -- Lt/ vLt

0 2 4 6 8 10 120.850000000000001

0.900000000000001

0.950000000000001

1

1.05

1.1

1.15

Top of Atm - Vicarious Adjustment AAOT - Aeronet VIIRS

Satellite Zenith Angle (degrees)

Gain -- Lt/ vLt

0 2 4 6 8 10 120.850000000000001

0.900000000000001

0.950000000000001

1

1.05

1.1

1.15

Top of Atm - Vicarious Adjustment AAOT - Aeronet VIIRS

Solar Zenith Angle (degrees)

Gain -- Lt/ vLt

VIIRS

7/19/11

0 2 4 6 8 10 120.850000000000001

0.900000000000001

0.950000000000001

1

1.05

1.1

1.15

Top of Atm - Vicarious Adjustment AAOT - Aeronet MODIS

Julian Day 2011

Gain -- Lt/ vLt

0 2 4 6 8 10 120.850000000000001

0.900000000000001

0.950000000000001

1

1.05

1.1

1.15

Top of Atm - Vicarious Adjustment AAOT - Aeronet MODIS

Solar Zenith Angle (degrees)

Gain -- Lt/ vLt

0 2 4 6 8 10 120.850000000000001

0.900000000000001

0.950000000000001

1

1.05

1.1

1.15

Top of Atm - Vicarious Adjustment AAOT - Aeronet MODIS

Satellite Zenith Angle (degrees)

Gain -- Lt/ vLt

MODIS

7/19/11

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 20

0.5

1

1.5

2

f(x) = NaN x + NaNR² = 0f(x) = NaN x + NaNR² = 0 nLw - Matchup 551 MODIS and VIIRS and SeaPrism - AAOT

Linear () Linear ()

nLw -satellite - 551 uw/cm2

SeaPrism 551 uW

/cm2/nm

7/19/11

0.9

0.95

1

1.05

1.1

Top of Atm - Vicarious Adjustment AAOT - Aeronet MODIS

Julian Day 2011

Gain -- Lt/ vLt