dchl {satin}

Chlorophyll concentration sample data - Aqua Modis sensor

Description

Chlorophyll-a concentration (8-day average; 4 km resolution) from March 30 to April 7 2013 off northwest Mexico.

Usage

data("dchl")

Format

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

..@ lon	: num [1:360] -119 -119 -119 -119 -119 ...
..@ lat	: num [1:360] 20 20.1 20.1 20.1 20.2 ...
..@ data	: num [1:360, 1:360, 1] 0.0631 0.0696 0.0724 0.0723 0.0705 ...
..@ attribs: List of 6
.. ..$ title	: chr "HMODISA Level-3 Standard Mapped Image"
.. ..$ longname	: chr "Chlorophyll Concentration, OCI Algorithm"
.. ..$ name	: chr "chlor_a"
.. ..$ units	: chr "mg m^-3"
.. ..$ temporal_range	: chr "8-day"
.. ..$ spatial_resolution	: chr "4.64 km"
..@ period: List of 2
.. ..$ tmStart	: POSIXct[1:1], format: "2013-03-30 00:25:01"
.. ..$ tmEnd	: POSIXct[1:1], format: "2013-04-07 02:59:59"
..@ depth	: num(0)

Details

Source data file (A20130892013096.L3m_8D_CHL_chlor_a_4km.nc) was downloaded from the link below, then imported with the read.nasaoc function. The selected area covers from 20 to 35 degrees of latitude North and from 119 to 104 degrees of longitude West.

Source

https://oceancolor.gsfc.nasa.gov/cgi/l3

References

https://oceancolor.gsfc.nasa.gov/docs/technical/

Examples

data(dchl)
dchl
str(dchl)

plot(dchl)

# plot with logarithmic scale
plot(dchl, log = TRUE)