US-NR1: Niwot Ridge Forest (LTER NWT1)

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Tower_team:
PI:	Peter Blanken Blanken@Colorado.EDU - University of Colorado
AncContact:	Sean Burns sean.burns@colorado.edu - University of Colorado
FluxContact:	Russell Monson Russell.Monson@colorado.edu - The University of Arizona
Lat, Long:	40.0329, -105.5464
Elevation(m):	3050
Network Affiliations:	AmeriFlux, Phenocam
Vegetation IGBP:	ENF (Evergreen Needleleaf Forests: Lands dominated by woody vegetation with a percent cover >60% and height exceeding 2 meters. Almost all trees remain green all year. Canopy is never without green foliage.)
Climate Koeppen:	Dfc (Subarctic: severe winter, no dry season, cool summer)
Mean Annual Temp (°C):	1.5
Mean Annual Precip. (mm):	800
Flux Species Measured:	CO2, H2O
Years Data Collected:	1998 - Present
Years Data Available:	AmeriFlux BASE 1998 - 2024 Data Citation AmeriFlux FLUXNET 1998 - 2016 Data Citation
Data Use Policy:	AmeriFlux CC-BY-4.0 Policy¹
Description:	The Niwot Ridge AmeriFlux site is located in a subalpine forest ecosystem just below the Continental Divide near Nederland, CO. The site is located at ... The Niwot Ridge AmeriFlux site is located in a subalpine forest ecosystem just below the Continental Divide near Nederland, CO. The site is located at 3050 m elevation, within 600m of the NOAA C1 long-term monitoring station, approximately 8 km east of the Continental Divide. The surrounding subalpine forest is ~97 years old and in a state of aggradation, having recovered from early twentieth century logging (Monson, et al. Global Change Biology (2002), 8 459-478). Additional data, photos, and information can be found at: Burns S. P., P. D. Blanken, and R. K. Monson (2020): Data, Photographs, Videos, and Information for the Niwot Ridge Subalpine Forest (US-NR1) AmeriFlux site. AmeriFlux Management Project. https://doi.org/10.15485/1671825 See More Show Less
URL:	http://urquell.colorado.edu/data_ameriflux
Research Topics:	The objectives and topics include the following: 1) Quantify the potential of forests in the mountainous Western US to sequester carbon and the effects ... The objectives and topics include the following: 1) Quantify the potential of forests in the mountainous Western US to sequester carbon and the effects of soil moisture and temperature on seasonal and annual patterns of NEE; 2) Examination of the large-scale flow features associated with mountainous terrains in an effort to determine how they affect local flux measurements; 3) Assessment of the energy budget of a subalpine forest in complex terrain; 4) Determine the difficulties surrounding a precise definition of the time of transition from winter net ecosystem CO2 loss to spring net ecosystem CO2 gain; 5) Establish a quantitative relationship between interannual variation in the rate of carbon uptake during spring snow melt and interannual variation in the rate of total annual carbon uptake; 6) Evaluate the environmental variables that are most important in triggering the forest turn-on date; 7) Investigate the physiological processes that are most limiting to the springtime upregulation of photosynthetic CO2 assimilation. See More Show Less
Acknowledgment:	Funding for the AmeriFlux core site US-NR1 data was provided by the U.S. Department of Energy’s Office of Science.

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This site’s data can also be used under the more restrictive AmeriFlux Legacy Policy.
The AmeriFlux Legacy Policy must be followed if this site’s data are combined with data from sites that require the AmeriFlux Legacy Policy.

US-NR1

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Image Credit: Sean Burns, 10/07/2014
Copyright preference: As long as credit is given

Site Publication More Site Publications

Burns, S. P., Blanken, P. D., Turnipseed, A. A., Hu, J., Monson, R. K. 2015. The Influence Of Warm-Season Precipitation On The Diel Cycle Of The Surface Energy Balance And Carbon Dioxide At A Colorado Subalpine Forest Site, Biogeosciences, 12:23, 7349-7377.

Year	Publication
2024	Webb, R., Knowles, J., Fox, A., Fabricus, A., Corrie, T., Mooney, K., Gallais, J., Frimpong, N., Akurugu, C., Barron‐Gafford, G., Blanken, P., Burns, S., Frank, J., Litvak, M. (2024) Energy‐Water Asynchrony Principally Determines Water Available For Runoff From Snowmelt In Continental Montane Forests, Hydrological Processes, 38(10), . https://doi.org/10.1002/hyp.15297
2024	Yang, J. C., Bowling, D. R., Smith, K. R., Kunik, L., Raczka, B., Anderegg, W. R., Bahn, M., Blanken, P. D., Richardson, A. D., Burns, S. P., Bohrer, G., Desai, A. R., Arain, M. A., Staebler, R. M., Ouimette, A. P., Munger, J. W., Litvak, M. E. (2024) Forest Carbon Uptake As Influenced By Snowpack And Length Of Photosynthesis Season In Seasonally Snow-Covered Forests Of North America, Agricultural And Forest Meteorology, 353, 110054. https://doi.org/10.1016/j.agrformet.2024.110054
2024	Javadian, M., Aubrecht, D. M., Fisher, J. B., Scott, R. L., Burns, S. P., Diehl, J. L., Munger, J. W., Richardson, A. D. (2024) Scaling Individual Tree Transpiration With Thermal Cameras Reveals Interspecies Differences To Drought Vulnerability, Geophysical Research Letters, 51(20), . https://doi.org/https://doi.org/10.1029/2024GL111479
2022	Teets, A., Moore, D. J., Alexander, M. R., Blanken, P. D., Bohrer, G., Burns, S. P., Carbone, M. S., Ducey, M. J., Fraver, S., Gough, C. M., Hollinger, D. Y., Koch, G., Kolb, T., Munger, J. W., Novick, K. A., Ollinger, S. V., Ouimette, A. P., Pederson, N., Ricciuto, D. M., Seyednasrollah, B., Vogel, C. S., Richardson, A. D. (2022) Coupling Of Tree Growth And Photosynthetic Carbon Uptake Across Six North American Forests, Journal Of Geophysical Research: Biogeosciences, 127(4), . https://doi.org/10.1029/2021JG006690
2021	Chu, H., Luo, X., Ouyang, Z., Chan, W. S., Dengel, S., Biraud, S. C., Torn, M. S., Metzger, S., Kumar, J., Arain, M. A., Arkebauer, T. J., Baldocchi, D., Bernacchi, C., Billesbach, D., Black, T. A., Blanken, P. D., Bohrer, G., Bracho, R., Brown, S., Brunsell, N. A., Chen, J., Chen, X., Clark, K., Desai, A. R., Duman, T., Durden, D., Fares, S., Forbrich, I., Gamon, J. A., Gough, C. M., Griffis, T., Helbig, M., Hollinger, D., Humphreys, E., Ikawa, H., Iwata, H., Ju, Y., Knowles, J. F., Knox, S. H., Kobayashi, H., Kolb, T., Law, B., Lee, X., Litvak, M., Liu, H., Munger, J. W., Noormets, A., Novick, K., Oberbauer, S. F., Oechel, W., Oikawa, P., Papuga, S. A., Pendall, E., Prajapati, P., Prueger, J., Quinton, W. L., Richardson, A. D., Russell, E. S., Scott, R. L., Starr, G., Staebler, R., Stoy, P. C., Stuart-Haëntjens, E., Sonnentag, O., Sullivan, R. C., Suyker, A., Ueyama, M., Vargas, R., Wood, J. D., Zona, D. (2021) Representativeness Of Eddy-Covariance Flux Footprints For Areas Surrounding Ameriflux Sites, Agricultural And Forest Meteorology, 301-302, 108350. https://doi.org/10.1016/j.agrformet.2021.108350
2021	Braghiere,R.K., Wang,Y., Doughty,R., Sousa,D., Magney,T., Widlowski,J.-L., Longo,M., Bloom,A.A., Worden,J., Gentine,P., Frankenberg,C. (2021) Accounting for canopy structure improves hyperspectral radiative transfer and sun-induced chlorophyll fluorescence representations in a new generation Earth System model, Remote Sensing of Environment, 261, . https://doi.org/https://doi.org/10.1016/j.rse.2021.112497
2021	Burns, S. P., Frank, J. M., Massman, W. J., Patton, E. G., Blanken, P. D. (2021) The Effect Of Static Pressure-Wind Covariance On Vertical Carbon Dioxide Exchange At A Windy Subalpine Forest Site, Agricultural And Forest Meteorology, 306, 108402. https://doi.org/10.1016/j.agrformet.2021.108402
2021	Wang, Y., Köhler, P., He, L., Doughty, R., Braghiere, R. K., Wood, J. D., Frankenberg, C. (2021) Testing Stomatal Models At The Stand Level In Deciduous Angiosperm And Evergreen Gymnosperm Forests Using Clima Land (V0.1), Geoscientific Model Development, 14(11), 6741-6763. https://doi.org/https://doi.org/10.5194/gmd-14-6741-2021
2020	Knowles, J. F., Scott, R. L., Biederman, J. A., Blanken, P. D., Burns, S. P., Dore, S., Kolb, T. E., Litvak, M. E., Barron‐Gafford, G. A. (2020) Montane Forest Productivity Across A Semiarid Climatic Gradient, Global Change Biology, 26(12), 6945-6958. https://doi.org/10.1111/gcb.15335
2020	Tai, X., Anderegg, W. R., Blanken, P. D., Burns, S. P., Christensen, L., Brooks, P. D. (2020) Hillslope Hydrology Influences The Spatial And Temporal Patterns Of Remotely Sensed Ecosystem Productivity, Water Resources Research, 56(11), . https://doi.org/10.1029/2020WR027630
2020	Xu, B., Arain, M. A., Black, T. A., Law, B. E., Pastorello, G. Z., Chu, H. (2020) Seasonal Variability Of Forest Sensitivity To Heat And Drought Stresses: A Synthesis Based On Carbon Fluxes From North American Forest Ecosystems, Global Change Biology, 26(2), 901-918. https://doi.org/10.1111/gcb.14843
2019	Sullivan, R. C., Cook, D. R., Ghate, V. P., Kotamarthi, V. R., Feng, Y. (2019) Improved Spatiotemporal Representativeness And Bias Reduction Of Satellite-Based Evapotranspiration Retrievals Via Use Of In Situ Meteorology And Constrained Canopy Surface Resistance, Journal Of Geophysical Research: Biogeosciences, 124(2), 342-352. https://doi.org/10.1029/2018JG004744
2019	Sullivan, R. C., Kotamarthi, V. R., Feng, Y. (2019) Recovering Evapotranspiration Trends From Biased CMIP5 Simulations And Sensitivity To Changing Climate Over North America, Journal Of Hydrometeorology, 20(8), 1619-1633. https://doi.org/10.1175/JHM-D-18-0259.1
2019	Magney, T. S., Bowling, D. R., Logan, B. A., Grossmann, K., Stutz, J., Blanken, P. D., Burns, S. P., Cheng, R., Garcia, M. A., Kӧhler, P., Lopez, S., Parazoo, N. C., Raczka, B., Schimel, D., Frankenberg, C. (2019) Mechanistic Evidence For Tracking The Seasonality Of Photosynthesis With Solar-Induced Fluorescence, Proceedings Of The National Academy Of Sciences, 201900278. https://doi.org/10.1073/pnas.1900278116
2019	Swenson, S. C., Burns, S. P., Lawrence, D. M. (2019) The Impact Of Biomass Heat Storage On The Canopy Energy Balance And Atmospheric Stability In The Community Land Model, Journal Of Advances In Modeling Earth Systems, 11(1), 83-98. https://doi.org/10.1029/2018MS001476
2019	Zhang, Q., Ficklin, D. L., Manzoni, S., Wang, L., Way, D., Phillips, R. P., Novick, K. A. (2019) Response Of Ecosystem Intrinsic Water Use Efficiency And Gross Primary Productivity To Rising Vapor Pressure Deficit, Environmental Research Letters, 14(7), 074023. https://doi.org/10.1088/1748-9326/ab2603
2019	Novick, K. A., Konings, A. G., Gentine, P. (2019) Beyond Soil Water Potential: An Expanded View On Isohydricity Including Land–Atmosphere Interactions And Phenology, Plant, Cell & Environment, 42(6), 1802-1815. https://doi.org/10.1111/pce.13517
2018	Burns, S. P., Swenson, S. C., Wieder, W. R., Lawrence, D. M., Bonan, G. B., Knowles, J. F., Blanken, P. D. (2018) A Comparison Of The Diel Cycle Of Modeled And Measured Latent Heat Flux During The Warm Season In A Colorado Subalpine Forest, Journal Of Advances In Modeling Earth Systems, . https://doi.org/10.1002/2017MS001248
2018	Chu, H., Baldocchi, D. D., Poindexter, C., Abraha, M., Desai, A. R., Bohrer, G., Arain, M. A., Griffis, T., Blanken, P. D., O'Halloran, T. L., Thomas, R. Q., Zhang, Q., Burns, S. P., Frank, J. M., Christian, D., Brown, S., Black, T. A., Gough, C. M., Law, B. E., Lee, X., Chen, J., Reed, D. E., Massman, W. J., Clark, K., Hatfield, J., Prueger, J., Bracho, R., Baker, J. M., Martin, T. A. (2018) Temporal Dynamics Of Aerodynamic Canopy Height Derived From Eddy Covariance Momentum Flux Data Across North American Flux Networks, Geophysical Research Letters, 45, 9275–9287. https://doi.org/10.1029/2018GL079306
2018	Bowling, D. R., Logan, B. A., Hufkens, K., Aubrecht, D. M., Richardson, A. D., Burns, S. P., Anderegg, W. R., Blanken, P. D., Eiriksson, D. P. (2018) Limitations To Winter And Spring Photosynthesis Of A Rocky Mountain Subalpine Forest, Agricultural And Forest Meteorology, 252, 241-255. https://doi.org/10.1016/j.agrformet.2018.01.025
2018	Berryman, E. M., Vanderhoof, M. K., Bradford, J. B., Hawbaker, T. J., Henne, P. D., Burns, S. P., Frank, J. M., Birdsey, R. A., Ryan, M. G. (2018) Estimating Soil Respiration In A Subalpine Landscape Using Point, Terrain, Climate, And Greenness Data, Journal Of Geophysical Research: Biogeosciences, 123(10), 3231-3249. https://doi.org/10.1029/2018JG004613
2017	Albert, L. P., Keenan, T. F., Burns, S. P., Huxman, T. E., Monson, R. K. (2017) Climate Controls Over Ecosystem Metabolism: Insights From A Fifteen-Year Inductive Artificial Neural Network Synthesis For A Subalpine Forest, Oecologia, 184(1), 25-41. https://doi.org/10.1007/s00442-017-3853-0
2017	Raczka, B., Biraud, S. C., Ehleringer, J. R., Lai, C., Miller, J. B., Pataki, D. E., Saleska, S. R., Torn, M. S., Vaughn, B. H., Wehr, R., Bowling, D. R. (2017) Does Vapor Pressure Deficit Drive The Seasonality Of δ13C Of The Net Land-Atmosphere Co2 Exchange Across The United States?, Journal Of Geophysical Research: Biogeosciences, 122(8), 1969-1987. https://doi.org/https://doi.org/10.1002/2017JG003795
2016	Wolf, S., Keenan, T.F., Fisher, J.B., Baldocchi, D.D., Desai, A.R., Richardson, A.D., Scott, R.L., Law, B.E., Litvak, M.E., Brunsell, N.A., Peters, W., van der Laan-Luijkx, I.T. (2016) Warm spring reduced carbon cycle impact of the 2012 US summer drought, Proceedings of the National Academy of Sciences, 113(21), 5880-5885. https://doi.org/10.1073/pnas.1519620113
2016	Zscheischler, J., Fatichi, S., Wolf, S., Blanken, P., Bohrer, G., Clark, K., Desai, A., Hollinger, D., Keenan, T., Novick, K.A., Seneviratne, S.I. (2016) Short-term favorable weather conditions are an important control of interannual variability in carbon and water fluxes, Journal of Geophysical Research - Biogeosciences, 121(8), 2186-2198. https://doi.org/10.1002/2016JG003503
2016	Burns, S. P., Maclean, G. D., Blanken, P. D., Oncley, S. P., Semmer, S. R., Monson, R. K. (2016) The Niwot Ridge Subalpine Forest Us-Nr1 Ameriflux Site – Part 1: Data Acquisition And Site Record-Keeping, Geoscientific Instrumentation, Methods And Data Systems, 5(2), 451-471. https://doi.org/10.5194/gi-5-451-2016
2016	Berkelhammer, M., Noone, D. C., Wong, T. E., Burns, S. P., Knowles, J. F., Kaushik, A., Blanken, P. D., Williams, M. W. (2016) Convergent Approaches To Determine An Ecosystem’S Transpiration Fraction, Global Biogeochemical Cycles, 30(6), 933-951. https://doi.org/10.1002/2016GB005392
2016	Winchell, T. S., Barnard, D. M., Monson, R. K., Burns, S. P., Molotch, N. P. (2016) Earlier Snowmelt Reduces Atmospheric Carbon Uptake In Midlatitude Subalpine Forests, Geophysical Research Letters, 43(15), 8160-8168. https://doi.org/10.1002/2016GL069769
2016	Novick, K. A., Ficklin, D. L., Stoy, P. C., Williams, C. A., Bohrer, G., Oishi, A., Papuga, S. A., Blanken, P. D., Noormets, A., Sulman, B. N., Scott, R. L., Wang, L., Phillips, R. P. (2016) The Increasing Importance Of Atmospheric Demand For Ecosystem Water And Carbon Fluxes, Nature Climate Change, 6(11), 1023-1027. https://doi.org/10.1038/nclimate3114
2015	Dennis Baldocchi, Cove Sturtevant (2015) Does day and night sampling reduce spurious correlation between canopy photosynthesis and ecosystem respiration?, Agricultural and Forest Meteorology, 207, 117-126. https://doi.org/10.1016/j.agrformet.2015.03.010
2015	Burns, S. P., Blanken, P. D., Turnipseed, A. A., Hu, J., Monson, R. K. (2015) The Influence Of Warm-Season Precipitation On The Diel Cycle Of The Surface Energy Balance And Carbon Dioxide At A Colorado Subalpine Forest Site, Biogeosciences, 12(23), 7349-7377. https://doi.org/10.5194/bg-12-7349-2015
2015	Knowles, J. F., Burns, S. P., Blanken, P. D., Monson, R. K. (2015) Fluxes Of Energy, Water, And Carbon Dioxide From Mountain Ecosystems At Niwot Ridge, Colorado, Plant Ecology & Diversity, 8(5-6), 663-676. https://doi.org/10.1080/17550874.2014.904950
2015	Knowles, J. F., Burns, S. P., Blanken, P. D., Monson, R. K. (2015) Fluxes Of Energy, Water, And Carbon Dioxide From Mountain Ecosystems At Niwot Ridge, Colorado, Plant Ecology & Diversity, 8(5-6), 663-676. https://doi.org/10.1080/17550874.2014.904950
2015	Knowles, J. F., Harpold, A. A., Cowie, R., Zeliff, M., Barnard, H. R., Burns, S. P., Blanken, P. D., Morse, J. F., Williams, M. W. (2015) The Relative Contributions Of Alpine And Subalpine Ecosystems To The Water Balance Of A Mountainous, Headwater Catchment, Hydrological Processes, 29(22), 4794-4808. https://doi.org/10.1002/hyp.10526
2015	Toomey, M., Friedl, M. A., Frolking, S., Hufkens, K., Klosterman, S., Sonnentag, O., Baldocchi, D. D., Bernacchi, C. J., Biraud, S. C., Bohrer, G., Brzostek, E., Burns, S. P., Coursolle, C., Hollinger, D. Y., Margolis, H. A., McCaughey, H., Monson, R. K., Munger, J. W., Pallardy, S., Phillips, R. P., Torn, M. S., Wharton, S., Zeri, M., Richardson, A. D. (2015) Greenness Indices From Digital Cameras Predict The Timing And Seasonal Dynamics Of Canopy-Scale Photosynthesis, Ecological Applications, 25(1), 99-115. https://doi.org/http://doi.org/10.1890/14-0005.1
2015	Knowles, J. F., Burns, S. P., Blanken, P. D., Monson, R. K. (2015) Fluxes Of Energy, Water, And Carbon Dioxide From Mountain Ecosystems At Niwot Ridge, Colorado, Plant Ecology & Diversity, 8(5-6), 663-676. https://doi.org/10.1080/17550874.2014.904950
2015	Knowles, J. F., Harpold, A. A., Cowie, R., Zeliff, M., Barnard, H. R., Burns, S. P., Blanken, P. D., Morse, J. F., Williams, M. W. (2015) The Relative Contributions Of Alpine And Subalpine Ecosystems To The Water Balance Of A Mountainous, Headwater Catchment, Hydrological Processes, 29(22), 4794-4808. https://doi.org/10.1002/hyp.10526
2014	Bowling, D. R., Ballantyne, A. P., Miller, J. B., Burns, S. P., Conway, T. J., Menzer, O., Stephens, B. B., Vaughn, B. H. (2014) Ecological Processes Dominate The13c Land Disequilibrium In A Rocky Mountain Subalpine Forest, Global Biogeochemical Cycles, 28(4), 352-370. https://doi.org/10.1002/2013GB004686
2014	Burns, S. P., Molotch, N. P., Williams, M. W., Knowles, J. F., Seok, B., Monson, R. K., Turnipseed, A. A., Blanken, P. D. (2014) Snow Temperature Changes Within A Seasonal Snowpack And Their Relationship To Turbulent Fluxes Of Sensible And Latent Heat, Journal Of Hydrometeorology, 15(1), 117-142. https://doi.org/10.1175/JHM-D-13-026.1
2014	Matheny, A. M., Bohrer, G., Stoy, P. C., Baker, I. T., Black, A. T., Desai, A. R., Dietze, M. C., Gough, C. M., Ivanov, V. Y., Jassal, R. S., Novick, K. A., Schäfer, K. V., Verbeeck, H. (2014) Characterizing The Diurnal Patterns of Errors in The Prediction of Evapotranspiration by Several Land-Surface Models: An Nacp Analysis, Journal Of Geophysical Research: Biogeosciences, 119(7), 1458-1473. https://doi.org/10.1002/2014JG002623
2013	Barr, A., Richardson, A., Hollinger, D., Papale, D., Arain, M., Black, T., Bohrer, G., Dragoni, D., Fischer, M., Gu, L., Law, B., Margolis, H., McCaughey, J., Munger, J., Oechel, W., Schaeffer, K. (2013) Use Of Change-Point Detection For Friction–Velocity Threshold Evaluation In Eddy-Covariance Studies, Agricultural And Forest Meteorology, 171-172, 31-45. https://doi.org/10.1016/j.agrformet.2012.11.023
2012	Burns, S. P., Horst, T. W., Jacobsen, L., Blanken, P. D., Monson, R. K. (2012) Using Sonic Anemometer Temperature To Measure Sensible Heat Flux In Strong Winds, Atmospheric Measurement Techniques, 5(9), 2095-2111. https://doi.org/10.5194/amt-5-2095-2012
2012	Richardson, A. D., Anderson, R. S., Arain, M. A., Barr, A. G., Bohrer, G., Chen, G., Chen, J. M., Ciais, P., Davis, K. J., Desai, A. R., Dietze, M. C., Dragoni, D., Garrity, S. R., Gough, C. M., Grant, R., Hollinger, D. Y., Margolis, H. A., McCaughey, H., Migliavacca, M., Monson, R. K., Munger, J. W., Poulter, B., Raczka, B. M., Ricciuto, D. M., Sahoo, A. K., Schaefer, K., Tian, H., Vargas, R., Verbeeck, H., Xiao, J., Xue, Y. (2012) Terrestrial Biosphere Models Need Better Representation Of Vegetation Phenology: Results From The North American Carbon Program Site Synthesis, Global Change Biology, 18(2), 566-584. https://doi.org/10.1111/j.1365-2486.2011.02562.x
2011	Desai, A.R., Moore, D.J.P., Ahue, W.K.M., Wilkes, P.T.V., De Wekker, S.F.J., Brooks, B.G., Campos, T.L., Stephens, B.B., Monson, R.K., Burns, S.P., Quaife, T., Aulenbach, S.M., Schimel, D.S. (2011) Seasonal Pattern Of Regional Carbon Balance In The Central Rocky Mountains From Surface And Airborne Measurements, Journal Of Geophysical Research, 116(G04009), 1-16. https://doi.org/10.1029/2011JG001655
2011	Burns, S. P., Sun, J., Lenschow, D. H., Oncley, S. P., Stephens, B. B., Yi, C., Anderson, D. E., Hu, J., Monson, R. K. (2011) Atmospheric Stability Effects On Wind Fields And Scalar Mixing Within And Just Above A Subalpine Forest In Sloping Terrain, Boundary-Layer Meteorology, 138(2), 231-262. https://doi.org/10.1007/s10546-010-9560-6
2011	Riveros-Iregui, D.A., Hu, J., Burns, S.P., Bowling, D.R., Monson, R.K. (2011) An Interannual Assessment Of The Relationship Between The Stable Carbon Isotopic Composition Of Ecosystem Respiration And Climate In A High-Elevation Subalpine Forest, Journal Of Geophysical Research, 116(G2), 1-15. https://doi.org/10.1029/2010JG001556
2010	Sun, J., Oncley, S. P., Burns, S. P., Stephens, B. B., Lenschow, D. H., Campos, T., Watt, A. S., Monson, R. K., Moore, D. J., Hu, J., Tschudi, M., Schimel, D. S., Aulenbach, S., Sacks, W. J., De Wekker, S. F., Lai, C., Lamb, B., Allwine, E., Coons, T., Ojima, D., Ellsworth, P. Z., Sternberg, L. S., Zhong, S., Clements, C., Anderson, D. E. (2010) A Multiscale And Multidisciplinary Investigation Of Ecosystem–Atmosphere CO2 Exchange Over The Rocky Mountains Of Colorado, Bulletin Of The American Meteorological Society, 91(2), 209-230. https://doi.org/10.1175/2009BAMS2733.1
2010	Hu, J., Moore, D. J., Riveros-Iregui, D. A., Burns, S. P., Monson, R. K. (2010) Modeling Whole-Tree Carbon Assimilation Rate Using Observed Transpiration Rates And Needle Sugar Carbon Isotope Ratios, New Phytologist, 185(4), 1000-1015. https://doi.org/10.1111/j.1469-8137.2009.03154.x
2010	Monson, R. K., Prater, M. R., Hu, J., Burns, S. P., Sparks, J. P., Sparks, K. L., Scott-Denton, L. E. (2010) Tree Species Effects On Ecosystem Water-Use Efficiency In A High-Elevation, Subalpine Forest, Oecologia, 162(2), 491-504. https://doi.org/10.1007/s00442-009-1465-z
2010	Hu, J., Moore, D. J., Burns, S. P., Monson, R. K. (2010) Longer Growing Seasons Lead To Less Carbon Sequestration By A Subalpine Forest, Global Change Biology, 16(2), 771-783. https://doi.org/10.1111/j.1365-2486.2009.01967.x
2009	Bowling, D. R., Miller, J. B., Rhodes, M. E., Burns, S. P., Monson, R. K., Baer, D. (2009) Soil, Plant, And Transport Influences On Methane In A Subalpine Forest Under High Ultraviolet Irradiance, Biogeosciences, 6(7), 1311-1324. https://doi.org/10.5194/bg-6-1311-2009
2009	Turnipseed, A. A., Burns, S. P., Moore, D. J., Hu, J., Guenther, A. B., Monson, R. K. (2009) Controls Over Ozone Deposition To A High Elevation Subalpine Forest, Agricultural And Forest Meteorology, 149(9), 1447-1459. https://doi.org/10.1016/j.agrformet.2009.04.001
2009	Oncley, S. P., Schwenz, K., Burns, S. P., Sun, J., Monson, R. K. (2009) A Cable-Borne Tram For Atmospheric Measurements Along Transects, Journal Of Atmospheric And Oceanic Technology, 26(3), 462-473. https://doi.org/10.1175/2008JTECHA1158.1
2009	Blanken, P. D., Williams, M. W., Burns, S. P., Monson, R. K., Knowles, J., Chowanski, K., Ackerman, T. (2009) A Comparison Of Water And Carbon Dioxide Exchange At A Windy Alpine Tundra And Subalpine Forest Site Near Niwot Ridge, Colorado, Biogeochemistry, 95(1), 61-76. https://doi.org/10.1007/s10533-009-9325-9
2009	Burns, S. P., Delany, A. C., Sun, J., Stephens, B. B., Oncley, S. P., Maclean, G. D., Semmer, S. R., Schröter, J., Ruppert, J. (2009) An Evaluation Of Calibration Techniques For In Situ Carbon Dioxide Measurements Using A Programmable Portable Trace-Gas Measuring System, Journal Of Atmospheric And Oceanic Technology, 26(2), 291-316. https://doi.org/10.1175/2008JTECHA1080.1
2009	Bowling, D. R., Massman, W. J., Schaeffer, S. M., Burns, S. P., Monson, R. K., Williams, M. W. (2009) Biological And Physical Influences On The Carbon Isotope Content Of Co2 In A Subalpine Forest Snowpack, Niwot Ridge, Colorado, Biogeochemistry, 95(1), 37-59. https://doi.org/10.1007/s10533-008-9233-4
2009	Blanken, P. D., Williams, M. W., Burns, S. P., Monson, R. K., Knowles, J. F., Chowanski, K., Ackerman, T. (2009) A Comparison Of Water And Carbon Dioxide Exchange At A Windy Alpine Tundra And Subalpine Forest Site Near Niwot Ridge, Colorado, Biogeochemistry, 95(1), 61-76. https://doi.org/10.1007/s10533-009-9325-9
2008	Yi, C., Anderson, D. E., Turnipseed, A. A., Burns, S. P., Sparks, J. P., Stannard, D. I., Monson, R. K. (2008) The Contribution Of Advective Fluxes To Net Ecosystem Exchange In A High-Elevation, Subalpine Forest, Ecological Applications, 18(6), 1379-1390. https://doi.org/10.1890/06-0908.1
2008	Schaeffer, S. M., Anderson, D. E., Burns, S. P., Monson, R. K., Sun, J., Bowling, D. R. (2008) Canopy Structure And Atmospheric Flows In Relation To The δ13c Of Respired Co2 In A Subalpine Coniferous Forest, Agricultural And Forest Meteorology, 148(4), 592-605. https://doi.org/10.1016/j.agrformet.2007.11.003
2008	ZOBITZ, J. M., BURNS, S. P., REICHSTEIN, M., BOWLING, D. R. (2008) Partitioning Net Ecosystem Carbon Exchange And The Carbon Isotopic Disequilibrium In A Subalpine Forest, Global Change Biology, 14(8), 1785-1800. https://doi.org/10.1111/j.1365-2486.2008.01609.x
2007	Sun, J., Burns, S. P., Delany, A. C., Oncley, S. P., Turnipseed, A. A., Stephens, B. B., Lenschow, D. H., LeMone, M. A., Monson, R. K., Anderson, D. E. (2007) Co2 Transport Over Complex Terrain, Agricultural And Forest Meteorology, 145(1-2), 1-21. https://doi.org/10.1016/j.agrformet.2007.02.007
2007	Zobitz, J. M., Burns, S. P., Ogée, J., Reichstein, M., Bowling, D. R. (2007) Partitioning Net Ecosystem Exchange Of Co2: A Comparison Of A Bayesian/Isotope Approach To Environmental Regression Methods, Journal Of Geophysical Research: Biogeosciences, 112(G3), n/a-n/a. https://doi.org/10.1029/2006JG000282
2006	Sacks, W. J., Schimel, D. S., Monson, R. K., Braswell, B. H. (2006) Model-Data Synthesis Of Diurnal And Seasonal CO2 Fluxes At Niwot Ridge, Colorado, Global Change Biology, 12(2), 240-259. https://doi.org/10.1111/j.1365-2486.2005.01059.x
2006	Monson, R. K., Burns, S. P., Williams, M. W., Delany, A. C., Weintraub, M., Lipson, D. A. (2006) The Contribution Of Beneath-Snow Soil Respiration To Total Ecosystem Respiration In A High-Elevation, Subalpine Forest, Global Biogeochemical Cycles, 20(3), n/a-n/a. https://doi.org/10.1029/2005GB002684
2006	Monson, R. K., Lipson, D. L., Burns, S. P., Turnipseed, A. A., Delany, A. C., Williams, M. W., Schmidt, S. K. (2006) Winter Forest Soil Respiration Controlled By Climate And Microbial Community Composition, Nature, 439(7077), 711-714. https://doi.org/10.1038/nature04555
2005	Yi, C., Monson, R. K., Zhai, Z., Anderson, D. E., Lamb, B., Allwine, G., Turnipseed, A. A., Burns, S. P. (2005) Modeling And Measuring The Nocturnal Drainage Flow In A High-Elevation, Subalpine Forest With Complex Terrain, Journal Of Geophysical Research, 110(D22303), n/a-n/a. https://doi.org/10.1029/2005jd006282
2005	Bowling, D. R., Burns, S. P., Conway, T. J., Monson, R. K., White, J. W. (2005) Extensive Observations Of Co2carbon Isotope Content In And Above A High-Elevation Subalpine Forest, Global Biogeochemical Cycles, 19(3), n/a-n/a. https://doi.org/10.1029/2004gb002394
2005	Churkina, G., Schimel, D., Braswell, B. H., Xiao, X. (2005) Spatial Analysis Of Growing Season Length Control Over Net Ecosystem Exchange, Global Change Biology, 11(10), 1777-1787. https://doi.org/10.1111/j.1365-2486.2005.001012.x
2005	Hibbard, K. A., Law, B. E., Reichstein, M., Sulzman, J. (2005) An Analysis Of Soil Respiration Across Northern Hemisphere Temperate Ecosystems, Biogeochemistry, 73(1), 29-70. https://doi.org/10.1007/s10533-004-2946-0
2005	Monson, R. K., Sparks, J. P., Rosenstiel, T. N., Scott-Denton, L. E., Huxman, T. E., Harley, P. C., Turnipseed, A. A., Burns, S. P., Backlund, B., Hu, J. (2005) Climatic Influences On Net Ecosystem CO2 Exchange During The Transition From Wintertime Carbon Source To Springtime Carbon Sink In A High-Elevation, Subalpine Forest, Oecologia, 146(1), 130-147. https://doi.org/10.1007/s00442-005-0169-2
2005	Sims, D. A., Rahman, A. F., Cordova, V. D., Baldocchi, D. D., Flanagan, L. B., Goldstein, A. H., Hollinger, D. Y., Misson, L., Monson, R. K., Schmid, H. P., Wofsy, S. C., Xu, L. (2005) Midday Values Of Gross CO2 Flux And Light Use Efficiency During Satellite Overpasses Can Be Used To Directly Estimate Eight-Day Mean Flux, Agricultural And Forest Meteorology, 131(1-2), 1-12. https://doi.org/10.1016/j.agrformet.2005.04.006
2005	Arain, M. A., Restrepo-Coupe, N. (2005) Net Ecosystem Production In A Temperate Pine Plantation In Southeastern Canada, Agricultural And Forest Meteorology, 128(3-4), 223-241. https://doi.org/10.1016/j.agrformet.2004.10.003
2004	Yi, C., Li, R., Bakwin, P. S., Desai, A., Ricciuto, D. M., Burns, S. P., Turnipseed, A. A., Wofsy, S. C., Munger, J. W., Wilson, K., Monson, R. K. (2004) A Nonparametric Method For Separating Photosynthesis And Respiration Components In CO2 Flux Measurements, Geophysical Research Letters, 31(17), n/a-n/a. https://doi.org/10.1029/2004gl020490
2004	Hui, D., Wan, S., Su, B., Katul, G., Monson, R., Luo, Y. (2004) Gap-Filling Missing Data In Eddy Covariance Measurements Using Multiple Imputation (MI) For Annual Estimations, Agricultural And Forest Meteorology, 121(1-2), 93-111. https://doi.org/10.1016/s0168-1923(03)00158-8
2004	Turnipseed, A. A., Anderson, D. E., Burns, S., Blanken, P. D., Monson, R. K. (2004) Airflows And Turbulent Flux Measurements In Mountainous Terrain: Part 2: Mesoscale effects, Agricultural And Forest Meteorology, 125(3-4), 187-205. https://doi.org/10.1016/j.agrformet.2004.04.007
2003	Huxman, T. E., Turnipseed, A. A., Sparks, J. P., Harley, P. C., Monson, R. K. (2003) Temperature As A Control Over Ecosystem CO2 Fluxes In A High-Elevation, Subalpine Forest, Oecologia, 134(4), 537-546. https://doi.org/10.1007/s00442-002-1131-1
2003	Turnipseed, A. A., Anderson, D. E., Blanken, P. D., Baugh, W. M., Monson, R. K. (2003) Airflows And Turbulent Flux Measurements In Mountainous Terrain: Part 1. Canopy and local effects, Agricultural And Forest Meteorology, 119(1-2), 1-21. https://doi.org/10.1016/s0168-1923(03)00136-9
2003	Sparks, J. P., Roberts, J. M., Monson, R. K. (2003) The Uptake Of Gaseous Organic Nitrogen By Leaves: A Significant Global Nitrogen Transfer Process, Geophysical Research Letters, 30(23), n/a-n/a. https://doi.org/10.1029/2003gl018578
2002	Turnipseed, A., Blanken, P., Anderson, D., Monson, R. (2002) Energy Budget Above A High-Elevation Subalpine Forest In Complex Topography, Agricultural And Forest Meteorology, 110(3), 177-201. https://doi.org/10.1016/s0168-1923(01)00290-8
2002	Schimel, D.S., Kittel, T.G.F., Running, S., Monson, R.K., Turnipseed, A.A., Anderson, D. (2002) Carbon Sequestration Studied In Western U.S. Mountains, EOS, Transactions American Geophysical Union, 83(40), 445-449. https://doi.org/10.1029/2002eo000314
2002	Monson, R. K., Turnipseed, A. A., Sparks, J. P., Harley, P. C., Scott-Denton, L. E., Sparks, K., Huxman, T. E. (2002) Carbon Sequestration In A High-Elevation, Subalpine Forest, Global Change Biology, 8(5), 459-478. https://doi.org/10.1046/j.1365-2486.2002.00480.x
1998	Reich, P. B., Walters, M. B., Ellsworth, D. S., Vose, J. M., Volin, J. C., Gresham, C., Bowman, W. D. (1998) Relationships Of Leaf Dark Respiration To Leaf Nitrogen, Specific Leaf Area And Leaf Life-Span: A Test Across Biomes And Functional Groups, Oecologia, 114(4), 471-482. https://doi.org/10.1007/s004420050471

US-NR1: Niwot Ridge Forest (LTER NWT1)

US-NR1: Niwot Ridge Forest (LTER NWT1)

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US-NR1: Niwot Ridge Forest (LTER NWT1)

2013.US.NR1.sitevisit.IMG_8989

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US-NR1: Niwot Ridge Forest (LTER NWT1)

US-NR1: Niwot Ridge Forest (LTER NWT1)

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US-NR1: Niwot Ridge Forest (LTER NWT1)

US-NR1: Niwot Ridge Forest (LTER NWT1)

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