Hello, This is my first post to this list. I am a beginner in R and GIS and I work as researcher at Spanish Institute of Oceanography. I have a ncdf file from the Copernicus webpage with monthly primary production data from the Northeastern Atlantic. In my case, the chlorophyll concentration from the following link, http://marine.copernicus.eu/services-portfolio/access-to-products/?option=com_csw&view=details&product_id=IBI_REANALYSIS_BIO_005_003 I want to calculate the monthly surface chlorophyll concentration. Unfortunately, after a lot of reading on the issue, I have been unable to come to any understanding. Any indication of tutorials, scripts, sites or packages will be very welcomed. Thanks in advance. Kindest regards, Juan Carlos
Surface Chlorophyll data calculation
2 messages · Juan Carlos Arronte, Rochelle Schneider
1 day later
Hi Juan Carlos, You have 10 variables inside your NetCDF, which chlorophyll concentration (CHL) is the variable [1]. According to your link, all variables are provided by month and day (i.e. many time-layers for the same variable); therefore you do not need to calculate only extract it. I would recommend you to start reading this post https://dominicroye.github.io/en/2018/access-to-climate-reanalysis-data-from-r/, then go to this one https://www.r-bloggers.com/a-netcdf-4-in-r-cheatsheet/ which uses CHL data as well. Cheers, Rochelle Schneider PhD Geospatial Analytics | MSc GIS | MSc Remote Sensing
From: R-sig-Geo <r-sig-geo-bounces at r-project.org> on behalf of JC Arronte <j_arronte at hotmail.com>
Sent: 20 June 2019 17:36
To: r-sig-geo at r-project.org
Subject: [R-sig-Geo] Surface Chlorophyll data calculation
Sent: 20 June 2019 17:36
To: r-sig-geo at r-project.org
Subject: [R-sig-Geo] Surface Chlorophyll data calculation
Hello, This is my first post to this list. I am a beginner in R and GIS and I work as researcher at Spanish Institute of Oceanography. I have a ncdf file from the Copernicus webpage with monthly primary production data from the Northeastern Atlantic. In my case, the chlorophyll concentration from the following link, http://marine.copernicus.eu/services-portfolio/access-to-products/?option=com_csw&view=details&product_id=IBI_REANALYSIS_BIO_005_003 I want to calculate the monthly surface chlorophyll concentration. Unfortunately, after a lot of reading on the issue, I have been unable to come to any understanding. Any indication of tutorials, scripts, sites or packages will be very welcomed. Thanks in advance. Kindest regards, Juan Carlos [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo at r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo