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CA-Ca2: British Columbia - Clearcut Douglas-fir stand (harvested winter 1999/2000)

Tower_team:
PI: T. Andrew Black andrew.black@ubc.ca - University of British Columbia, Vancouver
Lat, Long: 49.8705, -125.2909
Elevation(m): 300
Network Affiliations: AmeriFlux, Fluxnet-Canada
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: Cfb (Marine West Coast: mild with no dry season, warm summer)
Mean Annual Temp (°C): 9.86
Mean Annual Precip. (mm): 1474
Flux Species Measured: CO2
Years Data Collected: AmeriFlux: 2000 - Present
Description:
Tower Type: 10" triangular tower; Latitude/Longitude 49.87048N -125.29087W (GPS survey, 2003. Coordinates updated/corrected May, 2006); Elevation approx. ...
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URL: http://www.fluxnet-canada.ca/
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Acknowledgment: —
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CA-Ca2: British Columbia - Clearcut Douglas-fir stand (harvested winter 1999/2000)

Instructions for DOIs for This Site

When using DOIs for this site, use the publications and acknowledgments listed below.

DOIs

  • AmeriFlux
  • Citation: T. Andrew Black (2000-) AmeriFlux CA-Ca2 British Columbia - Clearcut Douglas-fir stand (harvested winter 1999/2000), Dataset. https://doi.org/10.17190/AMF/1480301
  • Link: https://doi.org/10.17190/AMF/1480301

Publications to use for Citations for this Site

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Acknowledgements

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Resources

CA-Ca2: British Columbia - Clearcut Douglas-fir stand (harvested winter 1999/2000)

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CA-Ca2: British Columbia - Clearcut Douglas-fir stand (harvested winter 1999/2000)

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. MODIS and VIIRS Land Products Fixed Sites Subsetting and Visualization Tool. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1567

Read more on how to cite these MODIS products. Data come from NASA’s MODIS instruments installed on satellites Terra and Aqua, which scan the entire Earth’s surface every one to two days.

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-Ca2: British Columbia - Clearcut Douglas-fir stand (harvested winter 1999/2000)

Year Publication
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.
2009 Krishnan, P., Black, T. A., Jassal, R. S., Chen, B., Nesic, Z. (2009) Interannual Variability Of The Carbon Balance Of Three Different-Aged Douglas-Fir Stands In The Pacific Northwest, Journal Of Geophysical Research, 114(G4), .
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.
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.
2006 Coursolle, C., Margolis, H. A., Barr, A. G., Black, T. A., Amiro, B. D., McCaughey, J. H., Flanagan, L. B., Lafleur, P. M., Roulet, N. T., Bourque, C. P., Arain, M. A., Wofsy, S. C., Dunn, A., Morgenstern, K., Orchansky, A. L., Bernier, P. Y., Chen, J. M., Kidston, J., Saigusa, N., Hedstrom, N. (2006) Late-Summer Carbon Fluxes From Canadian Forests And Peatlands Along An East-–West Continental Transect, Canadian Journal Of Forest Research, 36(3), 783-800.
2006 Humphreys, E. R., Black, T. A., Morgenstern, K., Cai, T., Drewitt, G. B., Nesic, Z., Trofymow, J. (2006) Carbon Dioxide Fluxes In Coastal Douglas-Fir Stands At Different Stages Of Development After Clearcut Harvesting, Agricultural And Forest Meteorology, 140(1-4), 6-22.
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.
2008 Jassal, R. S., Black, T. A., Novak, M. D., Gaumont-Guay, D., Nesic, Z. (2008) Effect Of Soil Water Stress On Soil Respiration And Its Temperature Sensitivity In An 18-Year-Old Temperate Douglas-Fir Stand, Global Change Biology, 14(6), 1305-1318.

CA-Ca2: British Columbia - Clearcut Douglas-fir stand (harvested winter 1999/2000)

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.

* 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-Ca2: British Columbia - Clearcut Douglas-fir stand (harvested winter 1999/2000)

Wind Roses

Click an image below to enlarge it, or use the navigation panel.
  • Image scale: 654m x 654m
  • Data Collected:
    • Wind roses use variables ‘WS’ and ‘WD’.
    Download Data Download Wind Rose as Image File (PNG)

    Wind Speed (m/s)

  • Graph Type
  • Wind Speed Scale
  • Wind Direction Scale (%)
  • Show Satellite Image
  • Show Wind Rose
    • 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