Rangelands provide significant environmental benefits through many ecosystem services, which may include soil organic carbon (SOC) sequestration. However, quantifying SOC stocks and monitoring carbon (C) fluxes in rangelands are challenging due to the considerable spatial and temporal variability tied to rangeland C dynamics as well …
Journal: Journal Of Advances In Modeling Earth Systems, Volume 17 (3): (2025). DOI: 10.1029/2024MS004342 Sites: US-A32, US-AR1, US-AR2, US-ARb, US-ARc, US-Aud, US-Bkg, US-BMM, US-BRG, US-Cop, US-Ctn, US-CZ1, US-Dia, US-FPe, US-Fwf, US-Hn1, US-Hn2, US-IB2, US-Jo1, US-KFS, US-KLS, US-KM2, US-KM3, US-KM4, US-Kon, US-LS1, US-LS2, US-Mpj, US-RFW, US-Rls, US-Rms, US-Ro4, US-Rwe, US-Rwf, US-Rws, US-SCg, US-SdH, US-Seg, US-Ses, US-Snd, US-SRM, US-Ton, US-Tx1, US-Tx2, US-Var, US-Wdn, US-Wjs, US-Wkg, US-xAE, US-xCL, US-xCP, US-xDC, US-xJR, US-xKA, US-xKZ, US-xMB, US-xNG, US-xNQ, US-xSJ, US-xWD, US-xYE
Large datasets of greenhouse gas and energy surface-atmosphere fluxes measured with the eddy-covariance technique (e.g., FLUXNET2015, AmeriFlux BASE) are widely used to benchmark models and remote-sensing products. This study addresses one of the major challenges facing model-data integration: To what spatial extent do flux measurements …
Journal: Agricultural And Forest Meteorology, Volume 301-302: 108350 (2021). DOI: 10.1016/j.agrformet.2021.108350 Sites: CA-ARB, CA-ARF, CA-Ca1, CA-Ca2, CA-Ca3, CA-Cbo, CA-DBB, CA-ER1, CA-Gro, CA-Let, CA-Man, CA-MR3, CA-MR5, CA-Na1, CA-NS1, CA-NS2, CA-NS3, CA-NS4, CA-NS5, CA-NS6, CA-NS7, CA-Oas, CA-Obs, CA-Ojp, CA-Qc2, CA-Qcu, CA-Qfo, CA-SCC, CA-SF1, CA-SF2, CA-SF3, CA-SJ2, CA-SJ3, CA-TP1, CA-TP3, CA-TP4, CA-TPD, CA-WP1, US-A03, US-A10, US-A32, US-A74, US-ADR, US-AR1, US-AR2, US-ARb, US-ARc, US-ARM, US-Aud, US-Bar, US-Bi1, US-Bi2, US-Bkg, US-Blk, US-Blo, US-Bn1, US-Bn2, US-Bn3, US-Bo1, US-Bo2, US-Br3, US-CaV, US-Ced, US-CF1, US-CF2, US-CF3, US-CF4, US-ChR, US-Cop, US-CPk, US-CRT, US-Ctn, US-Dia, US-Dix, US-Dk1, US-Dk2, US-Dk3, US-EDN, US-Elm, US-EML, US-Fmf, US-FPe, US-FR2, US-FR3, US-Fuf, US-Fwf, US-GLE, US-GMF, US-Goo, US-Ha1, US-Ha2, US-Hn2, US-Hn3, US-Ho1, US-Ho2, US-Ho3, US-IB1, US-IB2, US-Ivo, US-KFS, US-KLS, US-Kon, US-KS1, US-KS2, US-KUT, US-Lin, US-Los, US-LPH, US-LWW, US-Me1, US-Me2, US-Me3, US-Me4, US-Me5, US-Me6, US-MMS, US-MOz, US-Mpj, US-MRf, US-MtB, US-Myb, US-NC1, US-NC2, US-NC3, US-NC4, US-Ne1, US-Ne2, US-Ne3, US-NGB, US-NR1, US-Oho, US-ORv, US-PHM, US-Pon, US-Prr, US-RC1, US-RC2, US-RC3, US-RC4, US-RC5, US-Rls, US-Rms, US-Ro1, US-Ro2, US-Ro5, US-Ro6, US-Rpf, US-Rws, US-SdH, US-Seg, US-Ses, US-SFP, US-Shd, US-Skr, US-Slt, US-Snd, US-Sne, US-Snf, US-SO2, US-SO3, US-SO4, US-SP1, US-SP2, US-SP3, US-SRC, US-SRG, US-SRM, US-Srr, US-Sta, US-StJ, US-Syv, US-Ton, US-Tw1, US-Tw2, US-Tw3, US-Tw4, US-Tw5, US-Twt, US-Uaf, US-UMB, US-UMd, US-Var, US-Vcm, US-Vcp, US-Vcs, US-WBW, US-WCr, US-Wdn, US-Wgr, US-Whs, US-Wi0, US-Wi1, US-Wi3, US-Wi4, US-Wi5, US-Wi6, US-Wi7, US-Wi8, US-Wi9, US-Wjs, US-Wkg, US-Wlr, US-Wpp, US-WPT, US-Wrc, US-xBR, US-xCP, US-xDL, US-xHA, US-xKA, US-xKZ, US-xRM, US-xSR, US-xWD
We assessed the impacts of extreme late-summer drought on carbon balance in a semi-arid forest region in Arizona. To understand drought impacts over extremes of forest cover, we measured net ecosystem production (NEP), gross primary production (GPP), and total ecosystem respiration (TER) with eddy covariance over five years (2006–10) …
Journal: Environmental Research Letters, Volume 8 (1): n/a-n/a (2013). DOI: 10.1088/1748-9326/8/1/015015 Sites: US-Fuf, US-Fwf
The paradigm that winter is a dormant period of soil biogeochemical activity in high elevation or high latitude ecosystems has been amply refuted by recent research. Carbon dioxide (CO2) released from cold or snow-covered soil is a substantial component of total annual ecosystem carbon fluxes. Recent investigations have …
Journal: Arctic, Antarctic, And Alpine Research, Volume 44 (2): 247-254 (2012). DOI: 10.1657/1938-4246-44.2.247 Sites: US-Fwf
Journal: Global Change Biology, Volume 18 (10): 3171-3185 (2012). DOI: 10.1111/j.1365-2486.2012.02775.x Sites: US-Fmf, US-Fuf, US-Fwf
Severe wildfire may cause long-term changes in the soil-atmosphere exchange of carbon dioxide and methane, two gases known to force atmospheric warming. We examined the effect of a severe wildfire 10 years after burning to determine decadal-scale changes in soil gas fluxes following fire, and explored mechanisms responsible for …
Journal: Biogeochemistry, Volume 104 (1-3): 251-265 (2011). DOI: 10.1007/s10533-010-9499-1 Sites: US-Fuf, US-Fwf
Better understanding of variation in soil carbon dioxide (CO2) efflux caused by measurement techniques is needed, especially over gradients of site disturbance, …
Journal: Global Change Biology, Volume 16: 2449-2460 (2010). DOI: 10.1111/j.1365-2486.2009.02139.x Sites: US-Fuf, US-Fwf
Disturbances alter ecosystem carbon dynamics, often by reducing carbon uptake and stocks. We compared the impact of two types of disturbances that represent the most likely future conditions of currently …
Journal: Ecological Applications, Volume 20 (3): 663-683 (2010). DOI: 10.1890/09-0934.1 Sites: US-Fmf, US-Fuf, US-Fwf
Disturbances are important for renewal of North American forests. Here we summarize more than 180 site years of eddy covariance measurements of carbon dioxide flux made at forest chronosequences in North America. The disturbances included stand-replacing fire (Alaska, Arizona, Manitoba, and Saskatchewan) and harvest (British Columbia, …
Journal: Journal Of Geophysical Research, Volume 115 (G00K02): n/a-n/a (2010). DOI: 10.1029/2010JG001390 Sites: US-Fmf, US-Fuf, US-Fwf
We compared energy fluxes between a site converted from ponderosa pine (Pinus ponderosa) forest to sparse grassland by a severe wildfire 10 years ago and a nearby, unburned forest. We used eddy covariance and associated instruments to measure total radiation, net radiation, albedo, and fluxes of energy into latent heat, …
Journal: Agricultural And Forest Meteorology, Volume 149 (3-4): 491-500 (2009). DOI: 10.1016/j.agrformet.2008.09.011 Sites: US-Fuf, US-Fwf