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The time series shows the 16-day Normalized Difference Vegetation Index (NDVI) average from the MOD13Q1 data product.
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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

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.

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PhenoCams are high-resolution digital cameras that take repeated images of studied ecosystems and provide quantitative information about the canopy phenology. The PhenoCam Network coordinates the camera installation and data reporting/analyses across sites in the Americas, providing automated, near-surface remote sensing of canopy phenology across a range of ecosystems and climate zones. Use of PhenoCam images / data should follow the PhenoCam Data Use Policy .

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GeoNEX led by NASA Earth eXchange (NEX) is a collaborative effort for generating Earth monitoring products from the new generation of geostationary satellite sensors. GeoNEX has produced a suite of geostationary data products including surface reflectance, land surface temperature, surface solar radiation, and many others.

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NDVI: Normalized Difference Vegetation Index

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NIRv Near-Infrared Reflectance of vegetation

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DSR: Surface downward shortwave radiation

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LST: Land Surface Temperature

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Citation

This material can be used without obtaining permission from NASA. NASA should be acknowledged as the source of this material.

Subset Data Citation:

Hashimoto, H., Wang, W., Park, T., Khajehei, S., Ichii, K., Michaelis, A.R., Guzman, A., Nemani, R.R., Torn, M., Yi, K., Brosnan, I.G. (in preparation). Subsets of geostationary satellite data over international observing network sites for studying the diurnal dynamics of energy, carbon, and water cycles.

Relevant Science Publication Citation:

GeoNEX Surface Reflectance for Vegetation Indices (NDVI & NIRv)

Wang, W., Wang, Y., Lyapustin, A., Hashimoto, H., Park, T., Michaelis, A., & Nemani, R. (2022). A novel atmospheric correction algorithm to exploit the diurnal variability in hypertemporal geostationary observations. Remote Sensing, 14(4), 964.

GeoNEX Surface Downward Solar Radiation (DSR):

Li, R., Wang, D., Wang, W., & Nemani, R. (2023). A GeoNEX-based high-spatiotemporal-resolution product of land surface downward shortwave radiation and photosynthetically active radiation. Earth System Science Data, 15(3), 1419-1436.

GeoNEX Land Surface Temperature (LST):

Jia, A., Liang, S., & Wang, D. (2022). Generating a 2-km, all-sky, hourly land surface temperature product from Advanced Baseline Imager data. Remote Sensing of Environment, 278, 113105.

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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.

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Tower_team:
PI:	John Prueger john.prueger@ars.usda.gov - National Laboratory for Agriculture and the Environment
Lat, Long:	41.9757, -93.6925
Elevation(m):	314
Network Affiliations:	AmeriFlux
Vegetation IGBP:	CRO (Croplands: Lands covered with temporary crops followed by harvest and a bare soil period (e.g., single and multiple cropping systems). Note that perennial woody crops will be classified as the appropriate forest or shrub land cover type.)
Climate Koeppen:	Dfa (Humid Continental: humid with severe winter, no dry season, hot summer)
Mean Annual Temp (°C):	8.89
Mean Annual Precip. (mm):	846.74
Flux Species Measured:	CO2
Years Data Collected:	2005 - Present
Years Data Available:	No data available
Data Use Policy:	AmeriFlux Legacy Policy
Description:	The Brooks Field Site 1011 - Ames Site is one of three sites (Brooks Field Site 10 and Brooks Field Site 11) located in a corn/soybean agricultural landscape ... The Brooks Field Site 1011 - Ames Site is one of three sites (Brooks Field Site 10 and Brooks Field Site 11) located in a corn/soybean agricultural landscape of central Iowa. The farming systems, associated tillage, and nutrient management practices for soybean/corn production are typical of those throughout Upper Midwest Corn Belt. All three sites are members of the AmeriFlux network. Information for all three can be found in synchronous pages of this website. See More Show Less
URL:	—
Research Topics:	The main objective is to develop infrastructure for long-term monitoring of spatial and temporal variation of CO2/H2O vapor exchange and C storage within ... The main objective is to develop infrastructure for long-term monitoring of spatial and temporal variation of CO2/H2O vapor exchange and C storage within corn/soybean systems through implementation of a combination field-scale/boundary layer measurement site. Additional objectives include: 1) Comparison of NEE with direct measurement of soil and plant C pools on an annual time step; 2) Determination of agricultural plant contribution to the total CO2 flux; 3) Improve understanding of the complex processes for CO2/H2O exchange at the field and boundary layer scale for the Upper Midwest; 4) Assessment of relative accuracy and feasibility of fluxes measured with the diffusion-gradient technique; 5) Monitor exchange processes at a height where the influence of individual corn and soybean surfaces on the vertical profiles or fluxes becomes horizontally blended. See More Show Less
Acknowledgment:	—

US-Br2: Brooks Field Site 1011- Ames

US-Br2: Brooks Field Site 1011- Ames

DOI(s) for citing US-Br2 data

Publication(s) for citing site characterization

Acknowledgments

Resources

US-Br2: Brooks Field Site 1011- Ames

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US-Br2: Brooks Field Site 1011- Ames

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US-Br2: Brooks Field Site 1011- Ames

US-Br2: Brooks Field Site 1011- Ames

BADM for This Site

US-Br2: Brooks Field Site 1011- Ames

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