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 on behalf of JC Arronte
Sent: 20 June 2019 17:36
To: r-sig-geo@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
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