AmeriFlux [http://ameriflux.lbl.gov/] is part of the larger
network Fluxnet [http://daac.ornl.gov/FLUXNET/fluxnet.shtml] which
endeavors to connect observations from regional micrometeorological
tower sites for global analysis. AmeriFlux towers measure the
exchange of energy, water, and carbon through a network of sites
with variable vegetation, disturbance records, and climatic
conditions. The ecosystems included within the network are temperate
and tropical evergreen forests, temperate deciduous forests,
woodlands, grasslands, agricultural crops, boreal, and shrublands.
Climates in these biomes vary between tundra, temperate, tropical,
This Level 4 Dataset accumulated from the AmeriFlux Network focuses
on hourly, daily, and monthly observations collected at North
American tower sites. The selection of AmeriFlux sites were chosen
based on the period of available data, the diversity in vegetation
types, the past success of testing land surface models, and the
availability of atmospheric forcing for Community Land Models.
AmeriFlux Level 4 data has been gap-filled, quality-flagged and
includes meteorological variables, CO2 exchange rates, heat fluxes,
biogeochemical pools, calculated gross productivity, and ecosystem
respiration terms. The period of record varies by individual tower
site, but some sites have as much as 15 years of recorded data.