Multi-frequency investigation into scattering from vegetation over the growth cycle
| Autor: | Roger H. Lang, Peggy O'Neill, Manohar Deshpande, Mehmet Kurum, Michael H. Cosh, M. Tentindo, Alicia T. Joseph |
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| Rok vydání: | 2016 |
| Předmět: |
Radiometer
010504 meteorology & atmospheric sciences Scattering 0208 environmental biotechnology 02 engineering and technology Vegetation Albedo 01 natural sciences 020801 environmental engineering law.invention Footprint law Environmental science Radar Water content Optical depth 0105 earth and related environmental sciences Remote sensing |
| Zdroj: | IGARSS |
| Popis: | This paper reports on a recent field campaign that aims to collect time-series multi-frequency microwave data over winter wheat during the entire growth cycle. The data are being collected to characterize vegetation dynamics and to quantify its effects on soil moisture retrievals. A C-band radar was recently incorporated within the existing L-band radar/radiometer system called ComRAD (SMAP's ground based simulator) and an additional VHF receiver is being constructed as well. With C-band's ability to sense vegetation details and VHF's root-zone soil moisture within ComRAD's footprint, we will have an opportunity to test our ‘discrete scatterer’ vegetation models and parameters at various surface conditions. The purpose of this investigation is to determine optical depth and effective scattering albedo of vegetation of a given type (i.e. winter wheat) at various stages of growth that are needed to refine soil moisture retrieval algorithms for the SMAP mission. |
| Databáze: | OpenAIRE |
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