|Title||Where management and climate variability matter most: An evaluation of metrics for monitoring agroecosystem production and phenology|
|Publication Type||Conference Paper|
|Year of Publication||2021|
|Authors||Browning DM, Russell ES, Ponce-Campos GE, Kaplan N.E, Richardson AD, Seyednasrollah B, Spiegal SA, Saliendra NZ, Alfieri JG, Baker J.M, Bernacchi C, Bestelmeyer BT, Bosch DD, Boughton EH, Boughton RK, Clark PE, Flerchinger GN, Gomez-Casanovas N, Goslee S, Haddad N, Hoover DL, Mauritz ME, Miller GR, Sadler J, Saha A, Scott RL, Suyker A, Tweedie C, Wood JD, Zhang X, Taylor SD|
|Conference Name||2021 Fall Meeting of the American Geophysical Union|
|ARIS Log Number||387037|
Effective measurement of seasonal variations in the timing and amount of production are critical to managing spatially heterogeneous agroecosystems in a changing climate. Although many technologies for such measurements are available, their relationships to one another at a continental extent are unknown. Using data collected from across the Long-Term Agroecosystem Research (LTAR) and other networks, we investigated correlations among key metrics representing primary production, phenology, and carbon fluxes in 34 cropland, grazingland, and crop-grazing integrated systems across the continental U.S. Metrics we examined included gross primary productivity (GPP) estimated from eddy covariance (EC) towers and modelled from the Landsat satellite, Landsat NDVI, and vegetation greenness (Green Chromatic Coordinate, GCC) from tower-mounted PhenoCams for 2017 and 2018. We analyzed production dynamics estimated from three independent ground and remote platforms for 51 site-years of co-located time series.