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US-SRS: Santa Rita Savanna

Tower_team:
PI: Enrique R. Vivoni vivoni@asu.edu - Arizona State University
FluxContact: Eli R. Perez-Ruiz eli.perez@asu.edu - Arizona State University and Universidad Autonoma de Ciudad Juarez
Lat, Long: 31.8173, -110.8508
Elevation(m): 1169
Network Affiliations: AmeriFlux
Vegetation IGBP: WSA (Woody Savannas: Lands with herbaceous and other understory systems, and with forest canopy cover between 30-60%. The forest cover height exceeds 2 meters.)
Climate Koeppen: Bsk (Steppe: warm winter)
Mean Annual Temp (°C): 19.4
Mean Annual Precip. (mm): 388
Flux Species Measured: CO2, H, H2O
Years Data Collected: 2011 - 2019
Years Data Available:

AmeriFlux BASE 2011 - 2018   Data Citation
Data Use Policy:AmeriFlux CC-BY-4.0 Policy1
Description:
The study site is located in the Santa Rita Experimental Range, approximately 45 km south of Tucson, Arizona, within the Sonoran Desert. The rangeland ...
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URL: http://hydrology.asu.edu/wiki/index.php
Research Topics: Watershed hydrology and ecohydrology
Acknowledgment: Funding for the operation and maintenance of the Santa Rita Experimental Range Mesquite Savanna site was provide by the US Army Research Office (grant 56059‐EV‐PCS) and USDA-NIFA (grant 2022-13610-012-06S).
Site Tasks
  1. 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.
Site Photo More Site Images
Image Credit: Nicole Templeton
Copyright preference: As long as credit is given
Site Publication More Site Publications
Pierini, N. A., Vivoni, E. R., Robles-Morua, A., Scott, R. L., Nearing, M. A. 2014. Using Observations And A Distributed Hydrologic Model To Explore Runoff Thresholds Linked With Mesquite Encroachment In The Sonoran Desert, Water Resources Research, 50:10, 8191-8215.

US-SRS: Santa Rita Savanna

Use the information below for citation of this site. See the Data Policy page for more details.

DOI(s) for citing US-SRS 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 US-SRS data are combined with data from sites that require the AmeriFlux Legacy Policy.

  • AmeriFlux BASE: https://doi.org/10.17190/AMF/1660351
    Citation: Enrique R. Vivoni (2022), AmeriFlux BASE US-SRS Santa Rita Savanna, Ver. 3-5, AmeriFlux AMP, (Dataset). https://doi.org/10.17190/AMF/1660351

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

US-SRS: Santa Rita Savanna

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Note: Results are the number of downloads to distinct data users. The Download Count column indicates the number of times the data user downloaded the data. The Version column refers to the version of the data product for the site that was downloaded by the data user.

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US-SRS: Santa Rita Savanna

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.

US-SRS: Santa Rita Savanna

Year Publication
2022 Vivoni, E. R., Pérez-Ruiz, E. R., Scott, R. L., Naito, A. T., Archer, S. R., Biederman, J. A., Templeton, N. P. (2022) A Micrometeorological Flux Perspective On Brush Management In A Shrub-Encroached Sonoran Desert Grassland, Agricultural And Forest Meteorology, 313, 108763. https://doi.org/https://doi.org/10.1016/j.agrformet.2021.108763
2016 Anderson, C. A., Vivoni, E. R. (2016) Impact Of Land Surface States Within The Flux Footprint On Daytime Land-Atmosphere Coupling In Two Semiarid Ecosystems Of The Southwestern U.S., Water Resources Research, 52(6), 4785-4800. https://doi.org/https://doi.org/10.1002/2015WR018016
2016 Mascaro, G., Vivoni, E. R. (2016) On The Observed Hysteresis In Field-Scale Soil Moisture Variability And Its Physical Controls, Environmental Research Letters, 11(8), 084008. https://doi.org/https://doi.org/10.1088/1748-9326/11/8/084008
2014 Pierini, N. A., Vivoni, E. R., Robles-Morua, A., Scott, R. L., Nearing, M. A. (2014) Using Observations And A Distributed Hydrologic Model To Explore Runoff Thresholds Linked With Mesquite Encroachment In The Sonoran Desert, Water Resources Research, 50(10), 8191-8215. https://doi.org/https://doi.org/10.1002/2014WR015781

US-SRS: Santa Rita Savanna

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.

US-SRS: Santa Rita Savanna

Wind Roses

Click an image below to enlarge it, or use the navigation panel.
  • Image scale: 863m x 863m
  • 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