# Advances in the Monitoring of Algal Blooms by Remote Sensing: A Bibliometric Analysis
## 3 Results
### Number of Publications (Sensor)  
The number of publications for each satellite must have taken into account the launching and operating dates. Table 4 summarizes the most commonly used sensors, both for historical satellites \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Position** & **Journal** & **Total Articles (\%)** & **Total Citations (\%)** & **IF 2019** & **Country** \\ \hline
1 & Journal of Geophysical Research: Oceans & 8.08 & 13.70 & 3.559 & USA \\ \hline
2 & Remote Sensing of Environment & 6.87 & 1.47 & 9.085 & USA \\ \hline
3 & International Journal of Remote Sensing & 5.50 & 3.69 & 2.976 & England \\ \hline
4 & Deep-Sea Research: Part II & 4.53 & 8.41 & 2.697 & USA \\ \hline
5 & Geophysical Research Letters & 4.28 & 7.22 & 4.497 & USA \\ \hline
6 & Continental Shelf Research & 3.80 & 4.15 & 2.424 & England \\ \hline
7 & Journal of Marine Systems & 3.72 & 3.58 & 2.528 & Netherlands \\ \hline
8 & Remote Sensing & 3.40 & 1.34 & 4.509 & Switzerland \\ \hline
9 & Harmful Algae & 2.83 & 3.36 & 3.707 & USA \\ \hline
10 & Deep-Sea Research: Part I & 2.43 & 3.61 & 2.606 & USA \\ \hline  & Total & 45.44 & 50.53 & \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Ranking of the top 10 journals according to number of published articles. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Position** & **Journal** & **Total Citations (\%)** & **Total Articles (\%)** & **IF 2019** & **Country** \\ \hline
1 & Journal of Geophysical Research: Oceans & 13.70 & 8.08 & 3.559 & USA \\ \hline
2 & Deep-Sea Research: Part II & 8.41 & 4.53 & 2.697 & USA \\ \hline
3 & Geophysical Research Letters & 7.22 & 4.28 & 4.497 & USA \\ \hline
4 & Global Biogeochemical Cycles & 5.21 & 1.46 & 4.608 & USA \\ \hline
5 & Nature & 4.23 & 0.16 & 42.778 & England \\ \hline
6 & Continental Shelf Research & 4.15 & 3.80 & 2.424 & England \\ \hline
7 & Marine Ecology Progress Series & 3.99 & 1.70 & 2.326 & Germany \\ \hline
8 & Limnology and Oceanography & 3.80 & 1.94 & 3.778 & USA \\ \hline
9 & International Journal of Remote Sensing & 3.69 & 5.50 & 2.976 & England \\ \hline
10 & Deep-Sea Research: Part I & 3.61 & 2.43 & 2.606 & USA \\ \hline  & Total & 58.01 & 33.88 & \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Ranking of the top 10 journals according to total citations. (no longer working) and for current satellites (still in operation) (more information can be found at [[https://ioccg.org/resources/missions-instruments/](https://ioccg.org/resources/missions-instruments/)]([https://ioccg.org/resources/missions-instruments/](https://ioccg.org/resources/missions-instruments/))). The SeaWiFS (Sea-viewing Wide Field-of-view Sensor) operated from 1997 to 2011, and it was the most used sensor in phytoplankton blooms publications from 2000 to 2015 (Figure 6). SeaWiFS was used in 49% of the studies, either as a unique sensor or included in multisensor studies. MODIS (Moderate Resolution Imaging Spectroradiometer) usage analysis encompasses MODIS Aqua and MODIS Terra. MODIS was the second most used satellite from 2005 to 2017, and it was used in 27% of the analysed studies. Other satellites include: OCM (Ocean Colour Monitor) (32 studies), LANDSAT (25 studies), OCTS (Ocean Colour Temperature Scanner) (14 studies), CZCS (Coastal Zone Colour Scanner Experiment) (14 studies), GOCI (Geostationary Ocean Color Imager) (13 studies), and other sensors that were applied in ten or less studies (Figure 6 \"other satellites\").