Temporal variability of chromophoric dissolved organic matter in the Pearl River Estuary, China from 2003 to 2009

Authors

  • Fenfen Liu School of Marine sciences, Sun Yat-Sen University, Guangzhou 510006, China
  • Shilin Tang State Key Laboratory of Oceanography in the Tropics, South China Sea Institute of Oceanology, Chinese Academy of Sciences Guangzhou 510301, China
  • Chuqun Chen State Key Laboratory of Oceanography in the Tropics, South China Sea Institute of Oceanology, Chinese Academy of Sciences Guangzhou 510301, China

Keywords:

Gelbstoff, spectral analysis, photochemical reactions

Abstract

The present study aims to investigate the temporal variability of chromophoric dissolved organic matter through remote sensing and to determine its influence factors in the Pearl River Estuary. A medium resolution imaging spectrometer, chromophoric dissolved organic matter product was evaluated with in situ absorption coefficient (R2 = 0.9605, RMS = 0.1672 and MRE = 0.3930). L2 daily products were then averaged into monthly data to analyze variability in the specified area from January 2003 to December 2009. Accumulated anomaly analysis and the wavelet analysis showed that the variability had a significant period of one year from 2003 to 2009, accompanied with 3 and 6 month periods in 2004 and 2008 separately. Cross wavelet transform was used to analyze the relationships between chromophoric dissolved organic matter and its influence factors including rainfall and phytoplankton in time frequency space. Relationships with salinity and light were also analyzed. It was found that photobleaching induces lower dissolved organic matter in summer even though there is greater discharge due to large rainfall intensity during this season. However, the anomalous strong precipitation may cause significantly higher findings in the study area. An example was a heavy flood caused by strong precipitation in 2008 induced higher findings for the period for less than half a year.

References

Bailey, S. W., Werdell, P. J., 2006. A multi-sensor approach for the on-orbit validation of ocean color satellite data products. Remote Sens. Environ. 102, 12–23.

Baliunas, S., Frick, P., Sokoloff, D., Soon, W., 1997. Time scales and the trends in the Central England Temperature data (1659–1990): A wavelet analysis. Geophys. Res. Lett. 24, 1351–1354.

Bricaud, A., Morel, A., 1999. MERIS potential for ocean color studies in the open ocean. Int. J. Remote Sensing 20(9) 1757–1769.

Callahan, J., Dai, M., Chen, R. F., Li, X., Lu, Z., Huang, W., 2004. Distribution of dissolved organic matter in the Pearl River Estuary, China. Mar. Chem. 89, 211–224.

Chen, C., Shi, P., Yin, K., Pan, Z., Zhan, H., Hu, C., 2003a. Absorption coefficient of yellow substance in the Pearl River estuary. Proceedings of SPIE 4892, 215–221.

Chen, C., Shi, P., Zhan, H., 2003b. A local algorithm for estimation of yellow substance (gelbstoff) in coastal waters from SeaWiFS data: Pearl River estuary, China. Int. J. Remote Sens. 24, 1171–1176.

Chen, R. F., Bissett, P., Coble, P., Conmy, R., Gardner, G. B., Moran, M. A., Wang, X., Wells, M. L., Whelan, P., Zepp, R. G., 2004a. Chromophoric dissolved organic matter (CDOM) source characterization in the Louisiana Bight. Mar. Chem. 89, 257–272.

Chen, Z., Li, Y., Pan, J., 2004b. Distributions of colored dissolved organic matter and dissolved organic carbon in the Pearl River Estuary, China. Cont. Shelf Res. 24, 1845–1856.

Coble, P. G., 2007. Marine optical biogeochemistry: the chemistry of ocean color. Chem. Rev. 107, 402–418.

D’sa, E., Steward, R., Vodacek, A., Blough, N., Phinney, D., 1999. Determining optical absorption of colored dissolved organic matter in seawater with a liquid capillary waveguide. Limnol. Oceanogr. 44, 1142–1148.

D’sa, E. J., Dimarco, S. F., 2009. Seasonal variability and controls on chromophoric dissolved organic matter in a large river-diminated coastal margin. Limnol. Oceanogr. 54, 2233–2242.

D’sa, E. J., Hu, C., Muller-Karger, F. E., Carder, K. L., 2002. Estimation of colored dissolved organic matter and salinity fields in case 2 waters using SeaWiFS: Examples from Florida Bay and Florida Shelf. J. Earth Syst. Sci. 111, 197–207.

Ferrari, G. M., Dowell, M. D., 1998. CDOM absorption characteristics with relation to fluorescence and salinity in coastal areas of the Southern Baltic Sea. Estuar., Coast. Shelf S. 47, 91–105.

Fu, S., Zhao, S., Sun, J., Li, W., 2010. One kind of vortex causing heavy Rainfall during pre-rainy season in South China. Chin. J. Atmos. Sci. 34, 236–252. (In Chinese)

Grinsted, A., Moore, J. C., Jevrejeva, S., 2004. Application of the cross wavelet transform and wavelet coherence to geophysical time series. Nonlinear Proc. Geoph. 11, 561–566.

Hong, H., Wu, J., Shang, S., Hu, C., 2005. Absorption and fluorescence of chromophoric dissolved organic matter in the Pearl River Estuary, South China. Mar. Chem. 97, 78–89.

Hu, C., Muller-Karger, F. E., Vargo, G. A., Neely, M. B., Johns, E., 2004. Linkages between coastal runoff and the Florida Keys ecosystem: A study of a dark plume event. Geophys. Res. Lett. 31, L15307.15301-L15307.15304.

Kahru, M., Mitchell, B. G., 2001. Seasonal and nonseasonal variability of satellite-derived chlorophyll and colored dissolved organic matter concentration in the California Current. J. Geophys. Res. 106, 2517–2529.

Keith, D. J., Yoder, J. A., Freeman, S. A., 2002. Spatial and temporal distribution of coloured dissolved organic matter (CDOM) in Narragansett Bay, Rhode Island: Implications for phytoplankton in coastal waters. Estuar.Coast. Shelf S. 55, 705–717.

Kieber, R. J., Whitehead, R. F., Reid, S. N., Willey, J. D., Seaton, P. J., 2006. Chromophoric dissolved organic matter (CDOM) in rainwater, southeastern North Carolina, USA. J. Atmos. Chem. 54, 21–41

Kowalczuk, P., Cooper, W. J., Whitehead, R. F., Durako, M. J., Sheldon, W., 2003. Characterization of CDOM in an organic-rich river and surrounding coastal ocean in the South Atlantic Bight. Aquat. Sci. 65, 384–401.

Kowalczuk, P., Stedmon, C. A., Markager, S., 2006. Modeling absorption by CDOM in the Baltic Sea from season, salinity and chlorophyll. Mar. Chem. 101, 1–11

Kowalczuk, P., Ston-Egiert, J., Cooper, W. J., Whitehead, R. F., Durako, M. J., 2005. Characterization of chromophoric dissolved organic matter (CDOM) in the Baltic Sea by excitation emission matrix fluorescence spectroscopy. Mar. Chem. 96, 273–292.

Kumar, P., Foufoula-Georgiou, E., 1997. Wavelet analysis for geophysical applications. Rev.Geophys. 35, 385–412.

Loder, T., Reichard, R., 1981. The dynamics of conservative mixing in estuaries. Estuar. 4, 64–69.

Mobley, C. D., 1999. Estimation of the remote-sensing reflectance from above-surface measurements. Appl. Opt. 38, 7442–7455

Morel, A., Gentili, B., 2009. The dissolved yellow substance and the shades of blue in the Mediterranean Sea. Biogeosciences 6, 2625–2636.

Ni, H., Lu, F., Luo, X., Tian, H., Zeng, E., 2008. Riverine inputs of total organic carbon and suspended particulate matter from the Pearl River Delta to the coastal ocean off South China. Mar. Pollut. Bull. 56, 1150–1157.

Retamal, L., Vincent W. F., Martineau, C., Osburn C., 2007. Comparison of the optical properties of dissolved organic matter in two river-influenced coastal regions of the Canadian Arctic. Estuar., Coast. Shelf S. 72, 261–272.

Seitzinger, S. P., Harrison, J. A., Dumont, E., Beusen, A. H. W., Bouwman, A. F., 2005. Sources and delivery of carbon, nitrogen, and phosphorus to the coastal zone: An overview of Global Nutrient Export from Watersheds (NEWS) models and their application. Global Biogeochem.Cy. 19, GB4S01.

Torrence, C., Compo, G. P., 1997. A Practical Guide to Wavelet Analysis. Bulletin of the American Meteorological Society 79, 61–78.

Vähätalo, A. V., Wetzel, R. G., 2004. Photochemical and microbial decomposition of chromophoric dissolved organic matter during long (months-years) exposures. Mar. Chem. 89, 313–326.

Vecchio, R. D., Blough, N. V., 2004. Spatial and seasonal distribution of chromophoric dissolved organic matter and dissolved organic carbon in the Middle Atlantic Bight. Mar. Chem. 89, 169–187.

Wang, D., Xia, R., Liu, Y., 2011. A preliminary study of the flood-causing rainstorm during the first rainy season in South China in 2008. Acta Meteorologica Sinica 69, 137–148. (In Chinese)

Wei, F., 2007. Statistic Analysis and Forecasting of Climate. Beijing: China Meteorological Press. (In Chinese)

Weng, Q., 2001. Modeling Urban Growth Effects on Surface Runoff with the Integration of Remote Sensing and GIS. Environ. Manage. 28, 737–748.

Wong, L., Chen, J., Dong, L., 2004. A model of the plume front of the Pearl River Estuary, China and adjacent coastal waters in the winter dry season. Cont. Shelf Res. 24, 1779–1795.

Yin, K., Lin, Z., Ke, Z., 2004. Temporal and Spatial Distribution of Dissolved Oxygen in the Pearl River Estuary and Adjacent Coastal Waters. Cont. Shelf Res. 24, 1935–1948.

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Published

2014-07-03

Issue

Vol. 17 No. 3 (2014): Application of Remote Sensing for Assessing Aquatic Ecosystem Health of China

Section

Research article

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