Ameriflux

Observations of land energy fluxes from observation towers in the AmeriFlux network. Data are obtained from the AmeriFlux network.

Dataset Name: ameriflux

Data Source: ameriflux

Data Collection or Processing Notes:

We query data from AmeriFlux monthly. Each monthly job collects all observations available for sites that report on our supported variables.

Note that raw hourly data is saved in UTC while raw daily data is saved with respect to the local site time zone.

To maintain the integrity and traceability back to the original sources, our team conducts very limited data manipulation on the queried data. This includes the following:

• Unit translation into SI units - Standardization of NaN/missing values

• Consolidating multiple concurrent data series

  • The AmeriFlux data sometimes provides multiple concurrent observation series for the same variable for the same site. In these cases, we consolidate the multiple series into a single series following these prioritizations:

  • We prioritize series without any suffix in the original variable names. If none is present, we prioritize variables with a "PI" suffix in the variable name, to indicate the data has been QA/QC reviewed by the tower team.

Variables

This describes the available variables of the dataset. Use the dataset, variables and temporal_resolution in python access functions as described in the Working with Gridded Data, and Working with Point Observations.

Atmospheric Variables

variable	description	temporal_resolution	units	aggregation	3D
downward_shortwave	Downward shortwave radiation	hourly	w/m2	mean	no
downward_longwave	Downward longwave radiation	hourly	w/m2	mean	no
vapor_pressure_deficit	Vapor pressure deficit	hourly	hpa	mean	no
air_temp	Air temperature	hourly	c	mean	no
wind_speed	Wind speed	hourly	m/s	mean	no

Land Surface Variables

variable	description	temporal_resolution	units	aggregation	3D
sensible_heat	Sensible heat from canopy height to atmosphere	hourly	w/m2	sum	no
latent_heat	Latent heat flux from canopy height to atmosphere	hourly	w/m2	sum	no