Wetlands Monitoring with MODIS and QuikSCAT
Inner Niger Delta, Mali
QuikSCAT data are processed by Son V. Nghiem at Caltech-JPL with NASA support. The method utilizes the larger surface water reflectivity of horizontal compared to vertical polarization radar measured by the NASA QuikSCAT satellite. QuikSCAT obtains global coverage every 2.5 days. At Dartmouth, we average the processed polarization ratio data over 7 day periods (Sunday though Saturday) to produce weekly surface water anomalies.
Data compilation and image preparation by Heather A. Carlos and G. Robert Brakenridge
Composite of MODIS data with outline of
largest QuikSCAT anomaly (week ending 12 October 2002)
QuikSCAT anomalies - largest (week ending 12 October 2002),
current (week ending 4 January 2003)
Week Ending  QuikSCAT Anomaly    MODIS Surface Water 
12-Jan-02        12,405  
19-Jan-02          6,888  
26-Jan-02          8,871  
02-Feb-02        11,863  
09-Feb-02          7,708  
16-Feb-02          5,144  
23-Feb-02          6,096  
02-Mar-02          4,308  
09-Mar-02          4,844  
16-Mar-02          4,099  
23-Mar-02          1,325  
30-Mar-02          2,468  
06-Apr-02          2,678  
13-Apr-02          8,471  
20-Apr-02          2,228  
27-Apr-02                93  
04-May-02              293  
11-May-02              634  
18-May-02                83  
25-May-02              332  
01-Jun-02          1,992  
08-Jun-02          1,327  
15-Jun-02              750  
22-Jun-02              966  
29-Jun-02          4,749  
06-Jul-02          4,631  
13-Jul-02          2,385  
20-Jul-02          7,401  
27-Jul-02              915  
03-Aug-02          6,216  
10-Aug-02          2,580  
17-Aug-02          3,054  
24-Aug-02          9,198  
31-Aug-02          5,106  
07-Sep-02          2,241  
14-Sep-02          3,239  
21-Sep-02          9,128  
28-Sep-02        11,964  
05-Oct-02        14,853  
12-Oct-02        20,363  
19-Oct-02        16,286  
26-Oct-02        16,954  
02-Nov-02        18,251  
09-Nov-02        19,830          2,222
16-Nov-02        11,854          1,995
23-Nov-02        14,853  
30-Nov-02        12,038  
07-Dec-02        10,284  
14-Dec-02        15,444  
21-Dec-02          3,816  
28-Dec-02        10,770  
04-Jan-03          7,554