Solar Energy in Agro-Ecologic Micrometeorology Measurements: New Model of Flow and Material Point

Solar Energy in Agro-Ecologic Micrometeorology Measurements: New Model of Flow and Material Point

Ildus Saetgalievich Nurgaliev (Federal Scientific Agroengineering Center VIM, Russia)
DOI: 10.4018/978-1-5225-3867-7.ch006

Abstract

New approach to the measurements in agro-ecologic micrometeorology is suggested on the bases of renewable solar panels for energy supply to instruments at the remote sites and new turbulent model of the flow of the gases. Analytical dynamic model of the turbulent multi-component flow in the three-layer boundary system is presented. Turbulence is simulated by the non-zero vorticity, but not only. Other mathematical aspects of the turbulence are an introducing new model of the material point and considering a torsion of their trajectories. The generalized advection-diffusion-reaction equation is derived for an arbitrary number of components in the flow. The flows in the layers are objects for matching requirements on the boundaries between the layers. Different types of transport mechanisms are dominant on the different levels of the layers and space scales. The same models of mass and energy transfer are instrumental in simulation rural electrification concepts in general on the bases renewable sources.
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Introduction

Solar energy is, first of all, main component in the all agro- and bioprocesses on the Earth. And, second, it can be used to feed the measurements of the micrometeorology to monitor matter-and-energy balance of the planet. The study of the interactions between soil and atmosphere has recently thought been made more routine by new developments in the eddy covariance technique . This technique has primarily been used in intensive short-term land surface experiments and has provided new opportunities for estimating fluxes at larger spatial scales. Eddy covariance method is used for long term continuous measurements of mass and energy fluxes, to capture daily as well as seasonal dynamics and allow for a meaningful scaling with respect to time and identify correlations with other meteorological and climatic factors .

Fluxes of carbon dioxide, water vapor, and energy exchange have been measured at dosens forest, grassland, and crop sites as part of the EUROFLUX, AmeriFlux and of the emerging RusFluxNet projects. Half-hour flux and meteorology measurements take place as well as the gap-filled half-hour estimates and aggregations to day and night, weekly, monthly, and annual periods. Gap filling and extrapolation-interpolation techniques still have natural open questions as well as the identification of the real final big-data competent beneficiary of the raw informational flow about precise chemical content of the boundary level atmosphere flow of countries.

Creation of Russian part of Fluxnet – RusFluxnet – aims, as it declared, to fill the carbon dioxide fluxes data shortage. Because the Central Russia is still one of the less GHG-investigated European areas especially in case of agro-eco-system-level carbon dioxide fluxes monitoring by eddy covariance method. For the first time eddy covariance (EC) GHG study has been conducted at two representative agroecosystems of Central Russia belonging to different climate zones (geography and soils), but both with the same land use: the both fields were under barley.

Figure 1.

Precision Farming Experimental Field of the Timiryazev Agricultural University situated in Moscow. President of Russian Federation will protect this site from attempted raider seizure

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Figure 2.

Polden- Scotland FLUXNET tower site

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Figure 3.

Neustift/Stubai Valley FLUXNET tower site. Source: http://fluxnet.ornl.gov/

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