dnpp: Ocean Net Primary Production sample data

In satin: Visualisation and Analysis of Ocean Data Derived from Satellites

Ocean Net Primary Production sample data

Description

Ocean Net Primary Production (8-day average; 9.26 km resolution) from March 30 to April 6 2013 off northwest Mexico.

Usage

data("dnpp")

Format

Formal class 'satin' [package "satin"] with 6 slots

..@ lon	: num [1:180] -119 -119 -119 -119 -119 ...
..@ lat	: num [1:180] 20.1 20.1 20.2 20.3 20.4 ...
..@ data	: num [1:180, 1:180, 1] 285 292 270 279 262 ...
..@ attribs:List of 6
.. ..$ title	: chr "Ocean Productivity"
.. ..$ longname	: chr "Ocean Net Primary Production"
.. ..$ name	: chr "npp"
.. ..$ units	: chr "mgC m-2 day-1"
.. ..$ temporal_range	: chr "8 day"
.. ..$ spatial_resolution	: chr "9.26 km"
..@ period :List of 2
.. ..$ tmStart	: POSIXct[1:1], format: "2013-03-30"
.. ..$ tmEnd	: POSIXct[1:1], format: "2013-04-06 23:59:59"
..@ depth	: num(0)

Details

Source data file (vgpm.2013089.hdf.gz) was downloaded from the link below, decompressed with gunzip function from R.utils package, then converted to hdf v5 with h4toh5 Conversion Software (https://support.hdfgroup.org/products/hdf5_tools/h4toh5/download.html) before being imported with the read.osunpp function. The selected area covers from 20 to 35 degrees of latitude North and from 119 to 104 degrees of longitude West.

Source

http://sites.science.oregonstate.edu/ocean.productivity/standard.product.php

References

Behrenfeld, M. J. and Falkowski, P. G. 1997 Photosynthetic rates derived from satellite-based chlorophyll concentration, Limnology and Oceanography, 42, 1–20.

Examples

data(dnpp)
dnpp
str(dnpp)
plot(dnpp, col.sep = 100)

satin documentation built on Sept. 23, 2022, 1:06 a.m.