Vol.21, NO.1, 2010
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Article Navigation >  Journal of Applied Meteorological Science  > 2010  >  21(1): 76-82
Li Sanmei, Li Yajun, Dong Haiy ing, et al. Satellite remote sensing application to enteromorpha prolifera monitoring in the Yellow Sea. J Appl Meteor Sci, 2010, 21(1): 76-82.
Citation: Li Sanmei, Li Yajun, Dong Haiy ing, et al. Satellite remote sensing application to enteromorpha prolifera monitoring in the Yellow Sea. J Appl Meteor Sci, 2010, 21(1): 76-82.
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Satellite Remote Sensing Application to Enteromorpha Prolifera Monitoring in the Yellow Sea

  • 1.

    National Satellite Meteorological Center, Beijing 100081

  • 2.

    QingdaoMeteorological Bureau, Qingdao 266003

  • Received Date: 2009-03-03
  • Rev Recd Date: 2009-11-27
  • Publish Date: 2010-02-28
    Abstract
  • A method of enteromorpha prolifera monitoring using moderate resolution environm ent satellite data is proposed. Based on the spectral characteristics of enterom orpha prolifera, remote sensing methods and processing procedures are established and then the monitoring results are derived. With the support of GIS technique, the affected range, extent, moving path and coverage of enteromorpha prolifera can be developed and relevant products are produced. During the marine alga catchi ng campaign, enteromorpha prolifera monitoring products are made and provided to the campaigners in time. These products help to find enteromorpha prolifera are a promptly and are highly evaluated.The monitoring results show that enteromorpha prolifera in the Yellow Sea appear s in mid May of 2008 at first, and then the range of enteromorpha prolifera expand grad ually and move northwestward. In mid June, enteromorpha prolifera influence the region of Yellow Sea near Qingdao Olympic regatta sea area and the size reaches up to 800 km2. With the progress of a massive algae clearing activity, the ra nge of enteromorpha prolifera decreases rapidly. In mid July of 2008, there is little e nteromorpha prolifera in Qingdao Olympic regatta sea area.The temporal and spatial distribution characteristics of enteromorpha prolifera from 2006 to 2008 are analyzed using multiple observations of EOS/MODIS data and t he result shows that there are no evident phenomena of enteromorpha prolifera in Yellow Sea in the summers of 2006 and 2007.The coverage map of enteromorpha prolifera accumulated from multiple observation shows that high density enteromorpha prolifera appears most frequently in the o ffshore area and the sea area about 100 km south of Qingdao. About more than 200 00 km2 of sea area is influenced by enteromorpha prolifera in different extent in the summer of 2008 altogether.The moving path of enteromorpha prolifera induced from the multiple observation from May to July of 2008 shows that enteromorpha prolifera moves from southeast to northwest. It can also be concluded that enteromorpha prolifera moving path is deeply influenc ed by the wind and ocean current.
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    References(18)

  • Fig. 1  Curves of field spectral reflectance for vegetation, clear sea water and water with enteromorpha prolifera (the thickness of enteromorpha prolifera is 5, 10, 20, 30 cm respect ively)

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    Fig. 2  Section images of NDVI and TOA channel reflectance for enteromorpha prolifera in the sea

    (a) the false color image by three channel compo sition from EOS/ MODIS, (b) a portion enlarged imagetaken from Fig.2a according to the redframe, (c) the profile of NDVI along the redline in Fig.2b, (d) the profile of reflectance of short infrared, near in frared and visible channels along the red line in Fig.2b

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    Fig. 3  Section images of NDVI and TOA channel reflectance for vegetation ove rland

    (a) the false color image by th ree channel composition from EOS/MODIS, (b) a portion enlarged imagetaken from Fig.3a acco rding to the red frame, (c) the profile of NDVI along the red line in Fig.3b, (d) the profile of reflectance of shortinf rared, near infrared and visible channels along the redline in Fig.3b

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    Fig. 4  Distribution images of enteromorpha prolifera in region of the Yellow Sea near Qingdao

    (a)15 May 2008, (b)19 May 2008, (c)31 May 2008, (d)18 June 2008

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    Fig. 5  Chart of size of enteromorpha prolifera in region of the Yellow Sea near Qing dao from May to July 2008

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    Fig. 6  Multi-tempor alobserved on enteromorpha prolifera coverage composite image in region of the Yellow Sea near Qingdao from 15 May 2008 to 7 July 2008

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    Fig. 7  Image of the moving path of enteromorpha prolifera in the sea area near Qingdao from 15 May 2008 to 7 July 2008

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    • Received : 2009-03-03
    • Accepted : 2009-11-27
    • Published : 2010-02-28
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