CA-Oas: Saskatchewan - Western Boreal, Mature Aspen
| Tower_team: | |
| PI: | Alan Barr alan.barr@usask.ca - University of Saskatchewan |
| PI: | Andy Black andrew.black@ubc.ca - University of British Columbia |
| Lat, Long: | 53.6289, -106.1978 |
| Elevation(m): | 530 |
| Network Affiliations: | AmeriFlux, Fluxnet-Canada, Phenocam |
| Vegetation IGBP: | DBF (Deciduous Broadleaf Forests: Lands dominated by woody vegetation with a percent cover >60% and height exceeding 2 meters. Consists of broadleaf tree communities with an annual cycle of leaf-on and leaf-off periods.) |
| Climate Koeppen: | Dfc (Subarctic: severe winter, no dry season, cool summer) |
| Mean Annual Temp (°C): | 0.34 |
| Mean Annual Precip. (mm): | 428.53 |
| Flux Species Measured: | CO2 |
| Years Data Collected: | 1997 - Present |
| Years Data Available: | AmeriFlux BASE 1996 - 2010 Data Citation |
| Data Use Policy: | AmeriFlux CC-BY-4.0 Policy1 |
| Description: | 53.62889° N, 106.19779° W, elabation of 600.63 m,BOREAS 1994, 1996, BERMS climate and flux measurements began Dec. 1996 |
| URL: | http://berms.ccrp.ec.gc.ca/Sites/e-sites-oa.htm |
| Research Topics: | — |
| Acknowledgment: | — |
Site Tasks
- 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.
CA-Oas: Saskatchewan - Western Boreal, Mature Aspen
Use the information below for citation of this site. See the Data Policy page for more details.
DOI(s) for citing CA-Oas data
Data Use Policy: AmeriFlux CC-BY-4.0 License
This site’s data can also be used under the more restrictive AmeriFlux Legacy Policy.
The AmeriFlux Legacy Policy must be followed if CA-Oas data are combined with data from sites that require the AmeriFlux Legacy Policy.
- AmeriFlux BASE: https://doi.org/10.17190/AMF/1375197
Citation: T. Andrew Black (2016), AmeriFlux BASE CA-Oas Saskatchewan - Western Boreal, Mature Aspen, Ver. 1-1, AmeriFlux AMP, (Dataset). https://doi.org/10.17190/AMF/1375197
To cite BADM when downloaded on their own, use the publications below for citing site characterization. When using BADM that are downloaded with AmeriFlux BASE and AmeriFlux FLUXNET products, use the DOI citation for the associated data product.
Publication(s) for citing site characterization
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Acknowledgments
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Resources
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CA-Oas: Saskatchewan - Western Boreal, Mature Aspen
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CA-Oas: Saskatchewan - Western Boreal, Mature Aspen
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CA-Oas: Saskatchewan - Western Boreal, Mature Aspen
MODIS NDVI
The time series shows the 16-day Normalized Difference Vegetation Index (NDVI) average from the MOD13Q1 data product.
Use the slider below the time series to zoom in and out.
Includes all pixels that have acceptable quality
To view / download these data and other MOD13Q1 products for this site, visit MODIS/Terra Vegetation Indices.
For other related products, visit MODIS/VIIRS Fixed Sites Subsets Tool.
Citation:
ORNL DAAC. 2018. Terrestrial Ecology Subsetting & Visualization Services (TESViS) Fixed Sites Subsets. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1567
MODIS NDVI subsetted data is not yet available for this site.
For a complete list of AmeriFlux sites, visit ORNL DAAC's MODIS/VIIRS Fixed Sites Subsets Tool.
CA-Oas: Saskatchewan - Western Boreal, Mature Aspen
Search Publications for this Site
Publications Found: 36
| AmeriFlux Publications | Add Publication |
| Year | Publication |
|---|---|
| 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 |
| 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 |
| 2020 | Braghiere, R. K., Quaife, T., Black, E., Ryu, Y., Chen, Q., De Kauwe, M. G., Baldocchi, D. (2020) Influence Of Sun Zenith Angle On Canopy Clumping And The Resulting Impacts On Photosynthesis, Agricultural And Forest Meteorology, 291, 108065. https://doi.org/10.1016/j.agrformet.2020.108065 |
| 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 |
| 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 |
| 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 |
| 2009 | GAUMONT-GUAY, D., BLACK, T. A., MCCAUGHEY, H., BARR, A. G., KRISHNAN, P., JASSAL, R. S., NESIC, Z. (2009) Soil Co2efflux In Contrasting Boreal Deciduous And Coniferous Stands And Its Contribution To The Ecosystem Carbon Balance, Global Change Biology, 15(5), 1302-1319. https://doi.org/10.1111/j.1365-2486.2008.01830.x |
| 2006 | Krishnan, P., Black, T. A., Grant, N. J., Barr, A. G., Hogg, E. (., Jassal, R. S., Morgenstern, K. (2006) Impact Of Changing Soil Moisture Distribution On Net Ecosystem Productivity Of A Boreal Aspen Forest During And Following Drought, Agricultural And Forest Meteorology, 139(3-4), 208-223. https://doi.org/DOI:10.1016/j.agrformet.2006.07.002 |
| 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 |
| 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 |
| 1997 | Hogg, E. H., Hurdle, P. A. (1997) Sap Flow In Trembling Aspen: Implications For Stomatal Responses To Vapor Pressure Deficit, Tree Physiology, 17(8-9), 501-509. https://doi.org/10.1093/treephys/17.8-9.501 |
| 2001 | Nakamura, R., Mahrt, L. (2001) Similarity Theory For Local And Spatially Averaged Momentum Fluxes, Agricultural And Forest Meteorology, 108(4), 265-279. https://doi.org/10.1016/s0168-1923(01)00250-7 |
| 2000 | Nichol, C. J., Huemmrich, K. F., Black, T., Jarvis, P. G., Walthall, C. L., Grace, J., Hall, F. G. (2000) Remote Sensing Of Photosynthetic-Light-Use Efficiency Of Boreal Forest, Agricultural And Forest Meteorology, 101(2-3), 131-142. https://doi.org/10.1016/s0168-1923(99)00167-7 |
| 1997 | Brooks, J. R., Flanagan, L. B., Varney, G. T., Ehleringer, J. R. (1997) Vertical Gradients In Photosynthetic Gas Exchange Characteristics And Refixation Of Respired CO2 Within Boreal Forest Canopies, Tree Physiology, 17(1), 1-12. https://doi.org/10.1093/treephys/17.1.1 |
| 2004 | Griffis, T., Black, T., Gaumont-Guay, D., Drewitt, G., Nesic, Z., Barr, A., Morgenstern, K., Kljun, N. (2004) Seasonal Variation And Partitioning Of Ecosystem Respiration In A Southern Boreal Aspen Forest, Agricultural And Forest Meteorology, 125(3-4), 207-223. https://doi.org/10.1016/j.agrformet.2004.04.006 |
| 1997 | Margolis, H. A., Ryan, M. G. (1997) A Physiological Basis For Biosphere-Atmosphere Interactions In The Boreal Forest: An Overview, Tree Physiology, 17(8-9), 491-499. https://doi.org/10.1093/treephys/17.8-9.491 |
| 1999 | Grant, R. F., Black, T. A., den Hartog, G., Berry, J. A., Neumann, H. H., Blanken, P. D., Yang, P. C., Russell, C., Nalder, I. A. (1999) Diurnal And Annual Exchanges Of Mass And Energy Between An Aspen-Hazelnut Forest And The Atmosphere: Testing The Mathematical Model Ecosys With Data From The BOREAS Experiment, Journal Of Geophysical Research: Atmospheres, 104(D22), 27699-27717. https://doi.org/10.1029/1998jd200117 |
| 1997 | Lavigne, M. B., Ryan, M. G. (1997) Growth And Maintenance Respiration Rates Of Aspen, Black Spruce And Jack Pine Stems At Northern And Southern BOREAS Sites, Tree Physiology, 17(8-9), 543-551. https://doi.org/10.1093/treephys/17.8-9.543 |
| 2003 | Griffis, T., Black, T., Morgenstern, K., Barr, A., Nesic, Z., Drewitt, G., Gaumont-Guay, D., McCaughey, J. (2003) Ecophysiological Controls On The Carbon Balances Of Three Southern Boreal Forests, Agricultural And Forest Meteorology, 117(1-2), 53-71. https://doi.org/10.1016/s0168-1923(03)00023-6 |
| 1997 | Blanken, P. D., Black, T. A., Yang, P. C., Neumann, H. H., Nesic, Z., Staebler, R., den Hartog, G., Novak, M. D., Lee, X. (1997) Energy Balance And Canopy Conductance Of A Boreal Aspen Forest: Partitioning Overstory And Understory Components, Journal Of Geophysical Research: Atmospheres, 102(D24), 28915-28927. https://doi.org/10.1029/97jd00193 |
| 2002 | Mahrt, L., Vickers, D. (2002) Relationship Of Area-Averaged Carbon Dioxide And Water Vapour Fluxes To Atmospheric Variables, Agricultural And Forest Meteorology, 112(3-4), 195-202. https://doi.org/10.1016/s0168-1923(02)00079-5 |
| 2003 | Chen, J. M., Ju, W., Cihlar, J., Price, D., Liu, J., Chen, W., Pan, J., Black, A., Barr, A. (2003) Spatial Distribution Of Carbon Sources And Sinks In Canada's Forests, Tellus Series B-Chemical and Physical Meteorology, 55(2), 622-641. https://doi.org/10.1034/j.1600-0889.2003.00036.x |
| 2001 | Blanken, P., Black, T., Neumann, H., den Hartog, G., Yang, P., Nesic, Z., Lee, X. (2001) The Seasonal Water And Energy Exchange Above And Within A Boreal Aspen Forest, Journal Of Hydrology, 245(1-4), 118-136. https://doi.org/10.1016/s0022-1694(01)00343-2 |
| 2002 | Barr, A. G., Griffis, T. J., Black, T. A., Lee, X., Staebler, R. M., Fuentes, J. D., Chen, Z., Morgenstern, K. (2002) Comparing The Carbon Budgets Of Boreal And Temperate Deciduous Forest Stands, Canadian Journal Of Forest Research, 32(5), 813-822. https://doi.org/10.1139/x01-131 |
| 1999 | Gastellu-Etchegorry, J., Guillevic, P., Zagolski, F., Demarez, V., Trichon, V., Deering, D., Leroy, M. (1999) Modeling BRFAnd Radiation Regime Of Boreal And Tropical Forests, Remote Sensing Of Environment, 68(3), 281-316. https://doi.org/10.1016/s0034-4257(98)00119-9 |
| 1999 | Chen, W. J., Black, T. A., Yang, P. C., Barr, A. G., Neumann, H. H., Nesic, Z., Blanken, P. D., Novak, M. D., Eley, J., Ketler, R. J., Cuenca, R. (1999) Effects Of Climatic Variability On The Annual Carbon Sequestration By A Boreal Aspen Forest, Global Change Biology, 5(1), 41-53. https://doi.org/10.1046/j.1365-2486.1998.00201.x |
| 2006 | Ponton, S., Flanagan, L. B., Alstad, K. P., Johnson, B. G., Morgenstern, K., Kljun, N., Black, T. A., Barr, A. G. (2006) Comparison Of Ecosystem Water-Use Efficiency Among Douglas-Fir Forest, Aspen Forest And Grassland Using Eddy Covariance And Carbon Isotope Techniques, Global Change Biology, 12(2), 294-310. https://doi.org/10.1111/j.1365-2486.2005.01103.x |
| 2006 | Chen, J. M., Govind, A., Sonnentag, O., Zhang, Y., Barr, A., Amiro, B. (2006) Leaf Area Index Measurements At Fluxnet-Canada Forest Sites, Agricultural And Forest Meteorology, 140(1-4), 257-268. https://doi.org/10.1016/j.agrformet.2006.08.005 |
| 2004 | Barr, A. G., Black, T., Hogg, E., Kljun, N., Morgenstern, K., Nesic, Z. (2004) Inter-Annual Variability In The Leaf Area Index Of A Boreal Aspen-Hazelnut Forest In Relation To Net Ecosystem Production, Agricultural And Forest Meteorology, 126(3-4), 237-255. https://doi.org/10.1016/j.agrformet.2004.06.011 |
| 1997 | Steele, S. J., Gower, S. T., Vogel, J. G., Norman, J. M. (1997) Root Mass, Net Primary Production And Turnover In Aspen, Jack Pine And Black Spruce Forests In Saskatchewan And Manitoba, Canada, Tree Physiology, 17(8-9), 577-587. https://doi.org/10.1093/treephys/17.8-9.577 |
| 1997 | Lerdau, M., Litvak, M., Palmer, P., Monson, R. (1997) Controls Over Monoterpene Emissions From Boreal Forest Conifers, Tree Physiology, 17(8-9), 563-569. https://doi.org/10.1093/treephys/17.8-9.563 |
| 1997 | Kimball, J. S., Thornton, P. E., White, M. A., Running, S. W. (1997) Simulating Forest Productivity And Surface-Atmosphere Carbon Exchange In The BOREAS Study Region, Tree Physiology, 17(8-9), 589-599. https://doi.org/10.1093/treephys/17.8-9.589 |
| 2005 | Gu, L., Falge, E. M., Boden, T., Baldocchi, D. D., Black, T., Saleska, S. R., Suni, T., Verma, S. B., Vesala, T., Wofsy, S. C., Xu, L. (2005) Objective Threshold Determination For Nighttime Eddy Flux Filtering, Agricultural And Forest Meteorology, 128(3-4), 179-197. https://doi.org/10.1016/j.agrformet.2004.11.006 |
| 1999 | Gu, L., Shugart, H. H., Fuentes, J. D., Black, T., Shewchuk, S. R. (1999) Micrometeorology, Biophysical Exchanges And NEE Decomposition In A Two-Story Boreal Forest — Development And Test Of An Integrated Model, Agricultural And Forest Meteorology, 94(2), 123-148. https://doi.org/10.1016/s0168-1923(99)00006-4 |
| 2004 | Bond-Lamberty, B., Wang, C., Gower, S. T. (2004) A Global Relationship Between The Heterotrophic And Autotrophic Components Of Soil Respiration?, Global Change Biology, 10(10), 1756-1766. https://doi.org/10.1111/j.1365-2486.2004.00816.x |
| 2000 | Mahrt, L., Lee, X., Black, A., Neumann, H., Staebler, R. (2000) Nocturnal Mixing In A Forest Subcanopy, Agricultural And Forest Meteorology, 101(1), 67-78. https://doi.org/10.1016/s0168-1923(99)00161-6 |
CA-Oas: Saskatchewan - Western Boreal, Mature Aspen
BADM for This Site
Access the Biological, Ancillary, Disturbance and Metadata (BADM) information and data for this site.
BADM contain information for many uses, such as characterizing a site’s vegetation and soil, describing disturbance history, and defining instrumentation for flux processing. They complement the flux/met data.
- Download BADM for this site*
- View Site General Info for this site (Overview tab)*
- Use Online Editor to update Site General Info or DOI Authorship
- Update information about submitted data (Variable Information tool)
- More BADM resources
* Online updates are shown on the Overview tab real time. However, downloaded BADM files will not reflect those updates until they have been reviewed for QA/QC.
CA-Oas: Saskatchewan - Western Boreal, Mature Aspen
Wind Roses
Click an image below to enlarge it, or use the navigation panel.
Wind Speed (m/s)
Annual Average
About Ameriflux Wind Roses
Wind Rose Explanation
A wind rose gives a succinct view of how wind speed and direction are typically distributed at a particular location. Presented in a circular format, a wind rose shows the frequency and intensity of winds blowing from particular directions. The length of each “spoke” around the circle indicates the amount of time (frequency) that the wind blows from a particular direction. Colors along the spokes indicate categories of wind speed (intensity). Each concentric circle represents a different frequency, emanating from zero at the center to increasing frequencies at the outer circles
Utility
This information can be useful to gain insight into regions surrounding a flux tower that contribute to the measured fluxes, and how those regions change in dependence of the time of day and season. The wind roses presented here are for four periods of the year, and in 16 cardinal directions. Graphics are available for all sites in the AmeriFlux network based on reported wind measurements at each site.
Data from each site can be downloaded by clicking the ‘download’ button.
Hover the cursor over a wind rose to obtain directions, speeds and intensities.
Note that wind roses are not equivalent to flux footprints. Specifically, the term flux footprint describes an upwind area “seen” by the instruments measuring vertical turbulent fluxes, such that heat, water, gas and momentum transport generated in this area is registered by the instruments. Wind roses, on the other hand, identify only the direction and speed of wind.
Where do these data come from?
The wind roses are based on observed hourly data from the sites registered with the AmeriFlux Network.
Parameters for AmeriFlux Wind Roses
To use wind roses for a single AmeriFlux site, the following parameters may be most useful:
- Wind Speed Scale: Per Site
- Wind Direction Scale (%): Per Site
To compare wind roses from more than one single AmeriFlux site, the following parameters may be most useful:
- Wind Speed Scale: Non-Linear
- Wind Direction Scale (%): AmeriFlux
Mar - Jun; 6am - 6pm
Mar - Jun; 6pm - 6am
Jun - Sep; 6am - 6pm
Jun - Sep; 6pm - 6am
Sep - Dec; 6am - 6pm
Sep - Dec; 6pm - 6am
Dec - Mar; 6am - 6pm
Dec - Mar; 6pm - 6am