Modeling Evapotranspiration in Everglades NP using Eddy Covariance Data Satellite based Info. | Apply Online

Opportunity Summary:

This grant opportunity (Funding Opportunity Number P13AS00098) was issued by the National Park Service under the title "Modeling Evapotranspiration in Everglades NP using Eddy Covariance Data Satellite based Info." It is a discretionary funding announcement using a cooperative agreement, meaning the project would be carried out with substantial involvement or partnership from the National Park Service rather than as a hands-off pass-through award. The activity falls under the natural resources category and is tied to CFDA 15.945, which covers cooperative research and training programs that support resources of the National Park System.

The core purpose of the project is to analyze evapotranspiration (ET) in Everglades National Park and, in particular, to understand how the controls on ET change seasonally. Evapotranspiration is the combined loss of water to the atmosphere through evaporation from surfaces and transpiration from plants, and it is a key variable for water balance, ecosystem function, and resource management in wetlands and coastal environments. The project emphasizes identifying and summarizing the drivers of ET over time at key sites in the park. One explicitly mentioned focal area is a mangrove forest in the Shark River region, which is a major coastal mangrove system in the Everglades and a critical interface between freshwater wetlands and marine influence. By targeting multiple sites and highlighting seasonal variability, the work is aimed at producing site-based insights that can be compared across habitats and hydrologic conditions within the park.

A defining feature of the opportunity is the use of eddy covariance data along with satellite-based information. Eddy covariance is a micrometeorological technique that directly measures exchanges of water vapor (and often carbon dioxide and energy) between ecosystems and the atmosphere, typically using high-frequency measurements of wind and humidity/temperature to derive fluxes. In ET research, eddy covariance provides a strong observational basis for quantifying actual water vapor fluxes at a footprint scale relevant to vegetation stands. The pairing with satellite-based information implies that the project is not only about characterizing ET at instrumented towers, but also about modeling or scaling ET using remotely sensed inputs (for example, vegetation indices, surface temperature, albedo, land cover, and other satellite-derived variables). In practice, this type of work often supports the creation or improvement of ET models that can extend tower observations across broader areas and help park managers understand spatial patterns and seasonal dynamics beyond the immediate measurement sites.

The expected output, as described, is an analysis and summary of seasonally varying controls on ET at the selected ENP sites. "Controls" in this context generally refers to the environmental and biological factors that regulate ET, which can include rainfall and inundation patterns, salinity influences (especially relevant in mangroves and coastal zones), radiation and energy availability, vapor pressure deficit, wind, canopy structure, phenology, and water availability in soils or surface waters. The emphasis on seasonal variability suggests attention to wet season versus dry season behavior, transitional periods, and how shifts in hydrology and meteorology influence ET rates and the relative importance of different drivers. Because Everglades ecosystems are strongly shaped by seasonal water levels, freshwater inflows, and coastal processes, understanding these seasonal ET controls can be directly relevant to hydrologic modeling, restoration planning, and assessments of ecosystem response to climate variability.

Administratively, the opportunity anticipated a single award, with total estimated funding of $75,000. The award ceiling and floor were both listed as $75,000, indicating a fixed award amount rather than a range. There was no cost sharing or matching requirement. Eligibility was limited to public and state-controlled institutions of higher education, which points to universities and similar public academic entities as the intended applicants, consistent with the research-oriented nature of the work and the cooperative research and training CFDA program.

Key dates show the opportunity was posted and created on June 20, 2013, with an original and current closing date of June 30, 2013, reflecting a short application window. Additional details were available through the grants.gov listing, and the point of contact for access issues was Rita Mihalik, Financial Assistance Officer, reachable by phone at 301-432-7890 and by email at ritamihalik@nps.gov.

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