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Tower_team:
PI:	Josué Delgado-Balbuena josuedlb@gmail.com - Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias
Lat, Long:	21.7872, -101.6070
Elevation(m):	2231
Network Affiliations:	AmeriFlux, MexFlux
Vegetation IGBP:	GRA (Grasslands: Lands with herbaceous types of cover. Tree and shrub cover is less than 10%. Permanent wetlands lands with a permanent mixture of water and herbaceous or woody vegetation. The vegetation can be present in either salt, brackish, or fresh water.)
Climate Koeppen:	Bsk (Steppe: warm winter)
Mean Annual Temp (°C):	17.5
Mean Annual Precip. (mm):	424
Flux Species Measured:	CO2, H2O
Years Data Collected:	2011 - 2016
Years Data Available:	No data available
Data Use Policy:	AmeriFlux CC-BY-4.0 Policy¹
Description:	The site is located on a shortgrass steppe, within the Llanos de Ojuelos geographic subprovince NE of Jalisco state, MexicoVegetation is dominated by grasses, ... The site is located on a shortgrass steppe, within the Llanos de Ojuelos geographic subprovince NE of Jalisco state, MexicoVegetation is dominated by grasses, with Bouteloua gracilis H.B.K. Lag ex Steud (blue grama) as the key grass species, forming under well preserved conditions near mono-specific stands. The region has a semiarid climate with mean annual precipitation of 424 m ±11 mm (mean ±1SE, last 30 years; INIFAP, Rancho experimental Vaquerías. SMN) mainly distributed between June and September and exhibiting from 6 to 9 months of no rain. Mean annual air temperature is 17.5 ±0.5 °C. The topography is characterized by valleys and gentle rolling hills with soils classified as haplic xerosols (associated with lithosols and eutric planosols), and haplic phaeozems (associated with lithosols). Soils are shallow with average depth of 0.3-0.4 m containing a calcic cemented layer at ~ 0.5 m in depth, with textures dominated by silty clay and sandy loam soils. The study site is a fenced area of ~64 ha of semiarid grassland under grazing and fire management. A 6 m high tower was placed at the center of the ecosystem of interest. That location allowed for an ever-changing and integrated measurement footprint of 320 m, 410 m, 580 m, and 260 m from the tower according to the N, E, S, and W orientations, respectively See More Show Less
URL:	—
Research Topics:	Identify drivers of diurnal and seasonal CO2 and H2O variability. Contributions of Legacy effects of precipitation to annual CO2 fluxes. To evaluate the ... Identify drivers of diurnal and seasonal CO2 and H2O variability. Contributions of Legacy effects of precipitation to annual CO2 fluxes. To evaluate the effect of PPT periodicity and magnitude of individual PPT events and a priori soil moisture conditions on daily and annual ecosystem C balance (NEE) See More Show Less
Acknowledgment:	Supported by Consejo Nacional de Ciencia y Tecnología (grant nos. CF 320641, CB 2008-01 102855, and CB 2013 220788), Consejo Nacional de Ciencia y Tecnología – Secretaría del Medio ambiente y Recursos Naturales (grant no. 108000), and the National Science Foundation (grant no. EF-1029808).

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MX-VQS: Vaquerías

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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

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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.

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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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Search Publications for this Site Publications Found: 2

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Year	Publication
2019	Delgado‐Balbuena, J., Arredondo, J. T., Loescher, H. W., Pineda‐Martínez, L. F., Carbajal, J. N., Vargas, R. (2019) Seasonal Precipitation Legacy Effects Determine The Carbon Balance Of A Semiarid Grassland, Journal Of Geophysical Research: Biogeosciences, 124(4), 987-1000. https://doi.org/https://dx.doi.org/10.1029/2018JG004799
2023	Delgado-Balbuena, J., Loescher, H. W., Aguirre-Gutiérrez, C. A., Alfaro-Reyna, T., Pineda-Martínez, L. F., Vargas, R., Arredondo, T. (2023) Dynamics Of Short-Term Ecosystem Carbon Fluxes Induced By Precipitation Events In A Semiarid Grassland, Biogeosciences, 20(12), 2369-2385. https://doi.org/https://doi.org/10.5194/bg-20-2369-2023

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MX-VQS: Vaquerías

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MX-VQS: Vaquerías

MX-VQS: Vaquerías

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MX-VQS: Vaquerías

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