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Title: Validation and Inter-Sensor Comparison of chlorophyll-a concentration from OCM-2 and MODIS data over Indian CAL-VAL Site
Authors: Tyagi, Geetika
Babu, K. N.
Keywords: Validation;Inter-sensor comparison;Calibration and Validation site;Chlorophyll-a;Lakshadweep Sea
Issue Date: Nov-2018
Publisher: NISCAIR-CSIR, India
Abstract: MODIS-Aqua has shown the least Root Mean Square Error (log scale, linear scale) of (0.129, 0.042) mg/m3 with respect to in-situ measurements followed by MODIS- Terra (0.139, 0.043) mg/m3and OCM-2 (0.264, 0.065) mg/m3. MODIS-Aqua is also having the least Mean Relative Percentage Difference (MRPD) (6.33%) and Mean Absolute Percentage Difference (MAPD) (14.47%) while OCM-2 is giving highest MRPD and MAPD of 88.71% and 89.49% with respect to in-situ observations. Inter-sensor comparison results show that MODIS-Aqua and MODIS-Terra are relatively more consistent with each other (MAPD-12.49%; MRPD- 9.86%) as compared to OCM-2 sensor. Overall, error is close to the retrieval limits of all three sensors.
Page(s): 2147-2154
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.47(11) [November 2018]

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