Monitoring of chlorophyll-a and sea surface silicate concentrations in the south part of Cheju island in the East China sea using MODIS data

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

6 Scopus Citations
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Author(s)

  • Yuanzhi Zhang
  • Zhaojun Huang
  • Dongyang Fu
  • Tingchen Jiang
  • X. San Liang
  • Xia Lu

Detail(s)

Original languageEnglish
Pages (from-to)173-178
Journal / PublicationInternational Journal of Applied Earth Observation and Geoinformation
Volume67
Online published2 Feb 2018
Publication statusPublished - May 2018
Externally publishedYes

Abstract

Continually supplied with nutrients, phytoplankton maintains high productivity under ideal illumination and temperature conditions. Data in the south part of Cheju Island in the East China Sea (ECS), which has experienced a spring bloom since the 2000s, were acquired during a research cruise in the spring of 2007. Compared with in-situ measurements, MODIS chlorophyll-a measurements showed high stability in this area. Excluding some invalid stations data, the relationships between nutrients and chlorophyll-a concentrations in the study area were examined and compared with the results in 2015. A high positive correlation between silicate and chlorophyll-a concentration was identified, and a regression relationship was proposed. MODIS chlorophyll-a measurements and sea surface temperature were utilized to determine surface silicate distribution. The silicate concentration retrieved from MODIS exhibited good agreement with in-situ measurements with R2 of 0.803, root mean square error (RMSE) of 0.326 μmol/L (8.23%), and mean absolute error (MAE) of 0.925 μmol/L (23.38%). The study provides a new solution to identify nutrient distributions using satellite data such as MODIS for water bodies, but the method still needs to be refined to determine the relationship of chlorophyll-a and nutrients during other seasons to monitor water quality in this and other areas.

Research Area(s)

  • Chlorophyll-a, MODIS, Spring bloom, SST, Surface silicate

Citation Format(s)

Monitoring of chlorophyll-a and sea surface silicate concentrations in the south part of Cheju island in the East China sea using MODIS data. / Zhang, Yuanzhi; Huang, Zhaojun; Fu, Dongyang; Tsou, Jin Yeu; Jiang, Tingchen; Liang, X. San; Lu, Xia.

In: International Journal of Applied Earth Observation and Geoinformation, Vol. 67, 05.2018, p. 173-178.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal