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Haolu Shang, Li Jia, and Massimo Menenti

vegetation growth by means of Fourier analysis of time series of NDVI images . Adv. Space Res. , 13 , 233 – 237 , doi: 10.1016/0273-1177(93)90550-U . Menenti, M. , Jia L. , Azzali S. , Roerink G. J. , Gonzalez-Loyarte M. , Leguizamon S. , and Verhoef W. , 2010 : Analysis of vegetation response to climate variability using extended time series of multispectral satellite images. Remote Sensing Optical Observations of Vegetation Properties, F. Maselli, M. Meneti, and P. A. Brivio, Eds

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Junchao Shi, Massimo Menenti, and Roderik Lindenbergh

/GLAS waveform. The intensity is a good indicator for glacial optical properties. Ice, snow, and surface irregularities (mainly crevasses) show a good differentiation in terms of geometry and reflectance. Figures 5a and 5b show shots 34 and 21 geolocated in the accumulation zone of Guila, whose slope and roughness are 9.9°, 1.01 m for shot 34 and 49.5°, 1.54 m for shot 21. The distribution is Gaussian in both cases, shot 34 is fitted with only one main peak, and the amplitudes are both close to 1.2 V

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Rafael Pimentel, Javier Herrero, Yijian Zeng, Zhongbo Su, and María J. Polo

Eqs. (1) and (2) at the study site. The wind transport term W was disregarded because of the quick snow metamorphosis, which compacts the snow and reduces its mobility. The variable G was also disregarded since, besides being considered a secondary term per se in the energy balance ( Kuusisto 1986 ), its value is considerably reduced at this site by the insulating properties of the local vegetation canopy. The variable P is direct input from the dataset measured by the weather station

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Gabriëlle J. M. De Lannoy, Rolf H. Reichle, and Valentijn R. N. Pauwels

= ( H , V ) (horizontal or vertical) as follows: where Tb TOA, p (K) is the top of vegetation Tb, T s (K) is the surface soil temperature, T c (K) is the canopy temperature (assumed equal to T s ), Tb ad, p (K) and Tb au, p (K) are the downward and upward atmospheric radiation, A p (–) is the vegetation attenuation, exp(− τ atm, p ) (–) is the atmospheric attenuation, τ atm, p (–) is the atmospheric optical depth, r p (–) is the rough surface reflectivity, and ω p (–) is the

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Mustafa Gokmen, Zoltan Vekerdy, Maciek W. Lubczynski, Joris Timmermans, Okke Batelaan, and Wouter Verhoef

, surface meteorology, and surface and vegetation properties ( Su et al. 2005 ). Latent heat flux, or equivalently evapotranspiration, is estimated considering the surface energy balance and the evaporative fraction. Comparing three process-based models (i.e., SEBS, Penman–Monteith, and Priestley–Taylor) to ET at the global scale, Vinukollu et al. (2011) concluded that all of them appear to underrepresent the sensitivity to soil moisture over water-limited regions and because of that overestimate ET

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