This dataset contains monthly water quality indicators ( Chlorophyll-a, Particulate inorganic carbon (PIC) and Particulate organic carbon (P)C)) derived from Remote Sensing MODIS observations from 2008 to 2013.
Chlorophyll-a
Chlorophyll-a is a measure of the amount of algae growing in a waterbody. It can be used to classify the trophic condition of a waterbody. Although algae are a natural part of freshwater ecosystems, too much algae can cause aesthetic problems such as green scums and bad odors, and can result in decreased levels of dissolved oxygen. Some algae also produce toxins that can be of public health concern when they are found in high concentrations.
Particulate inorganic carbon (PIC)
Particulate inorganic carbon or calcium carbonate, is a major component of the global ocean carbon cycle. Through the process of calcification, marine organisms produce PIC shells and carbon dioxide from calcium ions and bicarbonate in seawater. These organisms, upon death, eventually sink to the ocean floor. During this process, the calcium carbonate shells may partially dissolve and what remains accounts for about 75% of carbon deposition on the seafloor (Groom & Holligan, 1987). Moreover, calcium carbonate production leads to an increase in partial pressure of dissolved carbon dioxide in the surface layer of the ocean, weakening the effectiveness of the carbon dioxide sink produced by photosynthesis (Shutler et al., 2013).
Particulate onorganic carbon (POC) is one of the main pools of organic carbon found in the ocean. It is composed of living material (Phytoplankton, zooplanton, bacteria etc) and detritus. POC is important in terms of the global carbon cycle and it is the main pathway by which organic carbon formed via photosynthesis in the oceans surface layers is transferred to deeper ocean layers where it may be sequestered.
In order to maintain the results in a easy to use platform, a GIS project is created using QGIS software (open source) to easily manage, edit, export and create layouts from the results. The layers are organized as follows:
OPERANDUM_QGIS_prj.qgz: main QGIS project file that includes all layers
PuruvesiLake (shapefile): Puruvesi lake exact boundary
PuruvesiLake_with_buffer (shapefile): Puruvesi lake boundary with a buffer of 1 km to make sure that marginal pixels are within the boundary for the analysis
PICMap_MODIS: 60 monthly layers of estimated Particulate inorganic carbon from January 2008 until January 2013
Chlorophyll-a: 60 monthly layers of estimated Chlorophyll-a content from January 2008 until January 2013
POCMap_MODIS: 60 monthly layers of estimated Particulate organic carbon from January 2008 until January 2013
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