Overview for fluxes from 2007-July 2019 for US-Vcp
Top panel: Monthly net ecosystem exchange of carbon (NEE, net carbon balance where positive values indicate net carbon release to the atmosphere and negative values indicate net carbon stored in the ecosystem). Second from top: Monthly sums of Gross Primary Production (GPP, total carbon entering ecosystem through photosynthesis) and Ecosystem Respiration (RE, total carbon released through both autotrophic and heterotrophic respiration). Third from top: Monthly sums of Evapotranspiration (ET, total water released to atmosphere through transpiration and evapotranspiration) and incoming solar radiation (Rg). Bottom panel: Monthly precipitation totals (Precip) and average air temperature (bottom).
History of site
This tower was initially set up by the NSF Science and Technology Center for the Sustainability of Semi-arid Hydrology (SAHRA) in 2005 in the ~1200 km2 Jemez River basin of the Jemez Mountains in north-central New Mexico at the southern margin of the Rocky Mountain ecoregion in the Valles Caldera National Preserve. The overall effort was geared toward understanding the role of vegetation type and structure on basin scale water resources. When SAHRA ended, University of Arizona secured additional funding for this site through 2018 through the Jemez-Santa Catalina Critical Zone Observatory. My lab has been collaborating with SAHRA and CZO and running this tower, with partial support from these sources, since October 2006. Additional funding for this site has come from NASA-ROSES (2010-2013), and current funding for this tower is through Ameriflux Management Project, which started in 2013.