DOI: 10.1016/j.jag.2015.11.017
Scopus记录号: 2-s2.0-84988701262
论文题名: Citizens and satellites: Assessment of phytoplankton dynamics in a NW Mediterranean aquaculture zone
作者: Busch J ; A ; , Price I ; , Jeansou E ; , Zielinski O ; , van der Woerd H ; J
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2016
卷: 47 起始页码: 40
结束页码: 49
语种: 英语
英文关键词: Citizen science
; Coastal zone management
; Forel Ule
; MERIS
; Water color
Scopus关键词: coastal zone management
; colorimetry
; MERIS
; multispectral image
; ocean color
; phytoplankton
; satellite data
; Alfacs Bay
; Catalonia
; Ebro Delta
; Spain
; Tarragona [Catalonia]
; algae
英文摘要: Ocean colour measurements from space are well suited to assess phytoplankton dynamics over broad spatial scales. Closer to the coast however, the quality of these data degrades as a result of the loading of sediments and dissolved matter from terrestrial runoff, the influences of land reflection on atmospheric correction and sea-bottom reflection, which compromise their use in coastal management actions. Recently, the enabling of citizens to provide environmental observations has gained recognition as a way for enhancing the spatio-temporal coverage of satellite observations. In the FP7 funded EU project “Citclops” (Citizens’ observatory for coast and ocean optical monitoring), a smart phone app for the classification of water colour, simplified to 21 hues of the Forel Ule (FU) scale, is developed. In this study we examine two bays in the Ebro Delta (NW Mediterranean) where satellite data, hyperspectral measurements, and observations with the citizen tool for colour comparison were available. FU values and their corresponding novel colorimetric parameter, the hue colour angle, were derived in the bay at 12 stations with the traditional FU scale and one automated in-situ radiometric system at the Alfacs Bay aquaculture site. Both methods complied well during the study course of May–June 2011. These measurements were further compared to data from Full Resolution MERIS (Medium Resolution Imaging Spectrometer) satellite images. The quality of the retrieved hue angle varies over the image. For high-quality sites, MERIS hue colour angles and FU values gave a good estimate of seasonal algal dynamics in the bays over the year 2011, while ground measurements revealed colour changes over short space- and time frames, which are indicative of the fast dynamics of phytoplankton in the area that could not be fully resolved with MERIS data. The use of FU values and hue colour angle of water will allow a simple integration of data from hyperspectral measurements, MERIS multispectral observations and citizens observations with the (Citclops/EyeOnWater) water colour app. Such observational data can be included to local monitoring efforts, and can also foster an increased interest of the general public to local environmental management and governance issues. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80124
Appears in Collections: 气候变化事实与影响
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作者单位: University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment, Schleusenstraße 1, Wilhelmshaven, Germany; NOVELTIS, 153 Rue du LacLabège, France; Institute for Environmental Studies (IVM), VU University Amsterdam, De Boelelaan 1087, Amsterdam, Netherlands
Recommended Citation:
Busch J,A,, Price I,et al. Citizens and satellites: Assessment of phytoplankton dynamics in a NW Mediterranean aquaculture zone[J]. International Journal of Applied Earth Observation and Geoinformation,2016-01-01,47