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marelac (version 2.0)

Tools for Aquatic Sciences

Description

Datasets, constants, conversion factors, utilities for MArine, Riverine, Estuarine, LAcustrine and Coastal science. The package contains among others: (1) chemical and physical constants and datasets, e.g. atomic weights, gas constants, the earths bathymetry; (2) conversion factors (e.g. gram to mol to liter, barometric units, temperature, salinity); (3) physical functions, e.g. to estimate concentrations of conservative substances, gas transfer and diffusion coefficients, the Coriolis force and gravity; (4) thermophysical properties of the seawater, as from the UNESCO polynomial or from the more recent derivation based on a Gibbs function.

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Version

Install

install.packages('marelac')

Monthly Downloads

445

Version

2.0

License

GPL (>= 2)

Maintainer

Karline Soetaert

Last Published

September 7th, 2009

Functions in marelac (2.0)

convert_StoCl

Salinity-Chlorinity Conversion
convert_StoR

Salinity-Conductivity Conversion
gas_O2sat

Saturation Concentration of Oxygen in Water
gas_satconc

Saturated Concentrations of Gases in Water
convert_T

Conversion Between Different Temperature Units
AtomicWeight

The Atomic Weights of Chemical Elements
convert_salinity

Practical - Absolute Salinity Conversions
sw_adtgrad

Adiabatic Temperature Gradient in Seawater
sw_depth

Water Depth
Oceans

Useful Characteristics of the Oceans
sw_gibbs

Gibbs Function of Seawater
Constants

Useful Physical and Chemical Constants
convert_p

Conversion Between Different Barometric Units
sw_conserv

Concentrations of (Conservative) Species in Seawater
sw_enthalpy

Specific Enthalpy of Seawater
sw_sfac

Salinity conversion factors
sw_tpot

Potential Temperature of Seawater
gas_schmidt

The Schmidt Number for Gases in Seawater
sw_beta

Haline Contraction Coefficient of Seawater
sw_svel

Velocity of the Sound in Seawater
ssd2rad

Estimate Global Radiation from Measured Sunshine Duration Time
gas_transfer

The Gas Transfer Coefficient in cm/hr
diffcoeff

Molecular Diffusion Coefficients
earth_surf

Surface of 1 dg by 1 dg Cells of the Earth
sw_kappa

Isentropic Compressibility of Seawater
marelac-internal

Internal Functions of the marelac Package
molweight

Molecular Weight of a Chemical Species
gravity

Gravity on Earth
sw_entropy

Specific Entropy of Seawater
vertmean

Vertical Volume Weighted Mean of Matter Concentrations in Water Bodies
sw_cp

Heat Capacity of Sea Water
marelac-package

Tools for Aquatic Sciences
sw_tfreeze

Freezing Temperature of Seawater
sw_kappa_t

Isothermal Compressibility of Seawater
viscosity

Shear Viscosity of Water
sw_dens

Density of Sea Water
redfield

Redfield Ratio Calculator
vapor

Saturation Water Vapor Pressure
sw_alpha

Thermal Expansion Coefficient of Seawater
gas_solubility

Solubility Parameters
molvol

Mol to Liter Conversion for a Gas
convert_RtoS

Conductivity-Salinity Conversion
Bathymetry

World Bathymetric Data
coriolis

The Coriolis Force as a Function of Latitude
atmComp

Atmospheric Gas Composition
sw_comp

Reference Sea Salt Composition