GLI Level-2 Ocean color match-up analysis
                                last updated on 13 Dec. 2004

 ALL nLw and CHLA  (Ver.1 / Ver.2, ID:1~27) and Locations of the ground observations

       SCAT_NLW_ALLA.PNG - 24,192BYTES           LOC_ALL_IN_ONE_V21.GIF - 19,143BYTES

 All (3-26) in one PDF file (Ver.2)
   All scatters, All locations, and each SIMBADA scatters, locations

 List of Match-up scatter diagrams  (updated on 13 Dec 2004)

 

Observation

period

nLw

chla

ss

cdom

k490

tau

V1

V2

Observer/ Provider

P

-

Total*2

month

25-110

84

17

22

21

31

o

o

GLI PI and collaborators

-

1

Univ. Lille SIMBAD-A

2-10

287(SIMBAD-A)

 

 

 

 

281

o

o

nLw collected by P-Y Deschamps, and provided by R. Frouin HP

2.1

2

CALCOFI

4

 3-10 
(SIMBAD)

 

 

 

 

 11

o

o

R. Frouin, SIO HP

2

3

IMECOCAL

4

7-10(SIMBAD)

 

 

 

 

10

o

o

R. Frouin, SIO

2

4

P500304 

4

3-6
(SIMBAD)

 

 

 

 

7

o

o

D. Cutchin, SIO

2

5

MOBY*1

2-10

18-21
(multi-spectrum)

 

 

 

 

22

o

o

MOBY nLw by D. K. Clark, NOAA,
AERONET Lanai-site by C. McClain

2

6

SURF_CAL

4

2-6 (PRR800)

39

 

3

 

 

o

o

B. G. Mitchell, SIO HP

3

7

Nagasaki Ferry

3/20

3-5
(TriOS)

 

 

 

 

 

o

o

Ishizaka, Nagasaki Univ

2.1

8

ishysmpl20030414

4-8

0-1
(MER2041)

 

 

 

 

 

-

o

Ishizaka, Nagasaki Univ

2.1

9

REDTIDE20030722

7-8

3-12
(MER2041)

16

13

14

12

 

o

o

Ishizaka, Nagasaki Univ

2.1

10

ishysmpl20031017

10/17-18

1-3
(MER2041)

2

 

 

3

 

o

o

Ishizaka, Nagasaki Univ

2.1

11

Nagasaki-Maru 03058

5/10-13

0-1
(MER2041)

0

0-1

2-3

0-1

 

o

o

Ishizaka, Nagasaki Univ

2.1

12

Nagasaki-Maru 03421

4/21-24

 

4

 

 

 

 

o

o

Ishizaka, Nagasaki Univ

2.1

13

Kakuyo-Maru 030519

5/19-26

1
(MER2041)

2

1

2

1

 

o

o

Ishizaka, Nagasaki Univ

2.1

14

Nagasaki-Maru 030711

7/11-17

 

1

 

 

 

 

-

o

Ishizaka, Nagasaki Univ

2.1

15

Kakuyo-Maru 031017

10/17-19

4
(MER2041)

5

 

 

4

 

o

o

Ishizaka, Nagasaki Univ

2.1

16

NPEC 200305

5-1

1-6
(MER2040?)

14

9

6

5

 

o

o

NPEC, Ishizaka, Nagasaki Univ

2.1

17

-

6-7

0-1
(MER2040?)

1

1

1

1

 

o

o

Ishizaka, Nagasaki Univ

2.1

18

Tansei-Maru 030711

7/1-10

 

3

 

3

 

 

o

o

Ishizaka, Nagasaki Univ

2.1

19

KH0302

10/1-16

2-3
(MER2040)

3

 

2

 

 

o

o

Sasaoka, JAXA/EORC

2.1

20

Hakodate

2-8

3-8
(MER2040)

8

 

 

 

 

o

o

Saito, Fisheries Sciences and Faculty of Fisheries, Hokkaido Univ.

2.1

21

Tokyo&Sagami-Bay

4/15-18

4
(PRR800)

8

4

 

 

 

o

o

Kishino, Tokyo Kaiyo Univ.

2.1

22

New Caledonia

2-12

 

15

3

3

 

 

o

o

Dupouy and Neveux, LODYC

2

23

Cruise0301

4/13-16

 

2

 

 

 

 

o

o

Yokouchi & Kiyomoto, Seikai NFRI

2.1

24

Cruise0305

7/7-17

0-6
(PRR600)

17

 

 

6

 

o

o

Yokouchi & Kiyomoto, Seikai NFRI

2.1

25

YK0306

8/1-6

0-1
(PRR600)

 

 

 

0-1

 

o

o

Yokouchi & Kiyomoto, Seikai NFRI

2.1

26

SPINUP

4-5

1
(PRR600)

5

 

 

1

 

o

o

Saito, Tohoku NFRI

2.1

27

SY0306 (off Tohoku)

5-6

 

3

 

 

 

 

o

o

Tohoku NFRI

2.1

28

GOT20031009

10/9-26

4-10
(PRR600)

10

9

10

10

 

-

o

Siripong and Matsumura

2

29

SURF_IME

4/6-22

5
(PRR600)

5

 

 

 

 

o

o

B. G. Mitchell, SIO

3

30

Jetfoil trios 20030923

9/23

0-2
(TriOS)

 

 

 

 

 

o

o

Ishizaka, Nagasaki Univ

2

31

jetfoil trios 20030926

9-10

9-12
(TriOS)

 

 

 

 

 

o

o

Ishizaka, Nagasaki Univ

2

32

Chiba-Monitoirng Post

5-10

 

17

 

 

 

 

o

o

Japan Coast Guard

2

33

HCFES200304

4-12

 

 

 

 

 

 

 

 

Hokkaido Central Fisheries Experimental Station

1

34

OsakaBay20030424

4-10

 

 

 

 

 

 

 

 

National Research Institute of FEIS

1

35

SY0305&SY0307

5-7

 

 

 

 

 

 

 

 

National Research Institute of Fisheries Science,Fisheries Research Agency

2

36

Kurosaki20030817

8-9

 

 

 

 

 

 

 

 

National Research Institute of Fisheries Science,Fisheries Research Agency

2

 

....

 

 

 

 

 

 

 

 

 

 

 

P: Levels to open the ground onservation data [Level-1, 2, 2.5, 3, 4]
 1  : open to only JAXA
 2  : open to only JAXA, CAL/VAL PI, and Algorithm PI
(2.1: open to only JAXA, PI and others only for CAL/VAL/Algorithm uses)
 2.5: same as 2, but will change to 3
 3  : open to JAXA and all PI (CAL/VAL, Algorithm, and earth-science PIs)
 4  : open to public

PRR800: 305, 313, 320, 330, 340, 380, 395, 412, 443, 465, 475, 490, 510, 520, 532, 555, 565, 589, 625, 665, 670, 683, 694, 710, 765, 780 and 875nm
PRR600: 412, 443, 490, 510, 555, and 565
SIMBAD-A: (350, 380,) 412, 443, 490, 510, 565, 620, 670, 750, and 870nm (above-water)
SIMBAD-: 443, 490, 560, 670, and 870 nm (above-water)
MER2041: 340, 380, 412, 443, 465, 490, 520, 538, 565, 585, 625, 663 and 680nm
MER2040: 412, 443, 465, 490, 510, 520, 555, 565, 586, 625, 665 and 680nm
TriOS: above-water mesurements by multi-spectrum from 350~950nm

Additional analysis

  *1. Tests of vicarious calibration coefficients
   a-0) original MOBY result
   a-1) test result using temporal and scan-angle dependent coefficients of mirror-B
   a-2) test result using temporal and scan-angle dependent coefficients of mirror-A
   a-3) test result using temporal and scan angle dependent coefficients of mirror-B corrected by de-stripe coefs
   b) RGB images around MOBY (PDF file)  , Mapped image (PDF file)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vicarious coefficients{CH1-19,24,26}=
 /* Global SeaWiFS 20030508-20030711 */
 {1.0729, 1.0822, 1.0075, 1.0944, 1.0819, 1.0438, 1.0414,
  1.0242, 1.0720, 0.9959, 0.9992, 1.0026, 1.0000, 1.0000,
  1.0000, 0.9952, 1.6286, 0.9883, 1.0000, 0.8833, 0.9451},
(old version is follow)
cp1/0.9966,0.000337/
cp2/1.0109,0.000592/
gcal(14)=cp1(1)+cp1(2)*ptw[mm]*(1/cos(soz)+1/cos(saz))
gcal(15)=cp2(1)+cp2(2)*ptw[mm]*(1/cos(soz)+1/cos(saz))
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 Tests of in-water algorithm, in-water model and GLI atmospheric correction (7 April 2004)

    SPCTR_3CRUISE4.PNG - 27,426BYTES <- please click  Figures (PDF)

Upper graphs show ground observed nLws, simulated nLws, which is calculated by in-water model (by Dr. A. Tanaka) using ground observed in-water parameters (chla, ss, and cdom), and GLI nLws, for the cruise #6, #11, #23.
Lower scatter diagrams show difference between ground observed in-water parameters and estimated ones ("CS" means results by empirical in-water algorithms using ground observed nLws, and "GLI" means results using GLI nLws, i.e., GLI products).
Results of "CS" is geneally much better than "GLI". This means that major error source of GLI in-water products is still atmospheric correction processing.
However, differences between simulated nLws and observed nLws are also large (see upper graph or right scatter diagrams). This means that the in-water model also has some problem, especially on backscattering coefficients of chla, and should be improve for improving in-water neural network algorithm and for estimating realistic nLws in the atmospheric correction processing.

for reference, RGB images of GLI match up data #11:Kakuyo-Maru 030519, #23:NPEC 200305, #6:REDTIDE(July)

 GLI match-up to the SIMBAD-A observations by Univ. Lille group (11 June 2004)
 Scatter plots of each cruise (PDF)
 Match-up locations of each cruise (PDF)

ID=   1     COLIBRI-2003-04
ID=   2            LI_PRO-1
ID=   3           MEDGOOS-6
ID=   4            NORBAL-5
ID=   5        heincke-2003
ID=   6       skogafos-2003
ID=   7          boussole21
ID=   8     Belgica-2003-11
ID=   9     niva-cruise-#01
ID=  10     COLIBRI-2003-04
ID=  11            LI_PRO-1
ID=  12        heincke-2003
ID=  13          boussole22
ID=  14     niva-cruise-#02
ID=  15     Belgica-2003-16
ID=  16     niva-cruise-#02
ID=  17     COLIBRI-2003-07
ID=  18        GKSS-2003-07
ID=  19          boussole24
ID=  20     Belgica-2003-07
ID=  21      BLACK-SEA-2003
ID=  22     COLIBRI-2003-07
ID=  23        GKSS-2003-07
ID=  24     Belgica-2003-08
ID=  25      TOUCAN-2003-11
ID=  26          LIGUR-2003
ID=  27     Belgica-2003-09
ID=  28      TOUCAN-2003-11

OCEAN_BIG_KEY.GIF H. Murakami