Njoku:, E.G.; Entekhabi, D. Passive microwave remote sensing of soil moisture. J. Hydrol. 1996, 184, 101-129
Jonard, F.; Weihermuller, L.; Jadoon, K.Z.; Schwank, M.; Vereecken, H.; Lambot, S. Mapping field-scale soil moisture with L-band radiometer and ground-penetrating radar over bare soil. IEEE Trans. Geosci. Remote Sens. 2011, 49, 2863-2875
Wigneron, J.-P.; Chanzy, A.; Calvet, J.-C.; Bruguier, N. A simple algorithm to retrieve soil moisture and vegetation biomass using passive microwave measurements over crop fields. Remote Sens. Environ. 1995, 51, 331-341
Vereecken, H.; Weihermuller, L.; Jonard, F.; Montzka, C. Characterization of crop canopies and water stress related phenomena using microwave remote sensing methods: A review. Vadose Zone J. 2012, 11
Kerr, Y.H.;Waldteufel, P.;Wigneron, J.-P.; Delwart, S.; Cabot, F.; Boutin, J.; Escorihuela, M.-J.; Font, J.; Reul, N.; Gruhier, C.; et al. The SMOS mission: New tool for monitoring key elements of the global water cycle. Proc. IEEE 2010, 98, 666-687
Entekhabi, D.; Yueh, S.; O'Neill, P.; Kellogg, H.K. SMAP Handbook. Soil Moisture Active Passive. Mapping Soil Moisture and Freeze/Thaw from Space; JPL Publication JPL 400-1567; JPL: Pasadena, CA, USA, 2014; pp. 1-182
Entekhabi, D.; Njoku, E.G.; O'Neill, P.E.; Kellogg, K.H.; Crow, W.T.; Edelstein, W.N.; Entin, J.K.; Goodman, S.D.; Jackson, T.J.; Johnson, J.; et al. The soil moisture active passive (SMAP) mission. Proc. IEEE 2010, 98, 704-716
Wigneron, J.P.; Jackson, T.J.; O'Neill, P.; De Lannoy, G.; de Rosnay, P.; Walker, J.P.; Ferrazzoli, P.; Mironov, V.; Bircher, S.; Grant, J.P.; et al. Modelling the passive microwave signature from land surfaces: A review of recent results and application to the L-band SMOS & SMAP soil moisture retrieval algorithms. Remote Sens. Environ. 2017, 192, 238-262
Schwank, M.; Matzler, C.; Guglielmetti, M.; Fluhler, H. L-band radiometer measurements of soil water under growing clover grass. IEEE Trans. Geosci. Remote Sens. 2005, 43, 2225-2237
Li, X.; Zhang, L.; Weihermuller, L.; Jiang, L.; Vereecken, H. Measurement and simulation of topographic effects on passive microwave remote sensing over mountain areas: A case study from the Tibetan plateau. IEEE Trans. Geosci. Remote Sens. 2014, 52, 1489-1501
Jonard, F.; Bircher, S.; Demontoux, F.;Weihermüller, L.; Razafindratsima, S.;Wigneron, J.-P.; Vereecken, H. L-band microwave remote sensing of organic soil surface layers: A tower-based experiment. Remote Sens. 2018, 10, 304
Mo, T.; Choudhury, B.J.; Schmugge, T.J.; Wang, J.R.; Jackson, T.J. A model for microwave emission from vegetation-covered fields. J. Geophys. Res. 1982, 87, 11229-11237
Wigneron, J.P.; Kerr, Y.; Waldteufel, P.; Saleh, K.; Escorihuela, M.J.; Richaume, P.; Ferrazzoli, P.; de Rosnay, P.; Gurney, R.; Calvet, J.C.; et al. L-band Microwave Emission of the Biosphere (L-MEB) model: Description and calibration against experimental data sets over crop fields. Remote Sens. Environ. 2007, 107, 639-655
Kurum, M. Quantifying scattering albedo in microwave emission of vegetated terrain. Remote Sens. Environ. 2013, 129, 66-74
Miernecki, M.; Wigneron, J.-P.; Lopez-Baeza, E.; Kerr, Y.; De Jeu, R.; De Lannoy, G.J.M.; Jackson, T.J.; O'Neill, P.E.; Schwank, M.; Moran, R.F.; et al. Comparison of SMOS and SMAP soil moisture retrieval approaches using tower-based radiometer data over a vineyard field. Remote Sens. Environ. 2014, 154, 89-101
Grant, J.P.; Wigneron, J.P.; De Jeu, R.A.M.; Lawrence, H.; Mialon, A.; Richaume, P.; Al Bitar, A.; Drusch, M.; van Marle, M.J.E.; Kerr, Y. Comparison of SMOS and AMSR-R vegetation optical depth to four MODIS-based vegetation indices. Remote Sens. Environ. 2016, 172, 87-100
Hornbuckle, B.K.; Patton, J.C.; VanLoocke, A.; Suyker, A.E.; Roby, M.C.; Walker, V.A.; Iyer, E.R.; Herzmann, D.E.; Endacott, E.A. SMOS optical thickness changes in response to the growth and development of crops, crop management, and weather. Remote Sens. Environ. 2016, 180, 320-333
Fernandez-Moran, R.; Al-Yaari, A.; Mialon, A.; Mahmoodi, A.; Al Bitar, A.; De Lannoy, G.; Rodriguez-Fernandez, N.; Lopez-Baeza, E.; Kerr, Y.; Wigneron, J.-P. SMOS-IC: An alternative SMOS soil moisture and vegetation optical depth product. Remote Sens. 2017, 9, 457
van der Schalie, R.; Kerr, Y.H.; Wigneron, J.P.; Rodríguez-Fernández, N.J.; Al-Yaari, A.; de Jeu, R.A.M. Global SMOS soil moisture retrievals from the land parameter retrieval model. Int. J. Appl. Earth Obs. Geoinf. 2016, 45, 125-134
Vittucci, C.; Ferrazzoli, P.; Kerr, Y.; Richaume, P.; Guerriero, L.; Rahmoune, R.; Laurin, G.V. SMOS retrieval over forests: Exploitation of optical depth and tests of soil moisture estimates. Remote Sens. Environ. 2016, 180, 115-127
Konings, A.G.; Piles, M.; Rötzer, K.; McColl, K.A.; Chan, S.K.; Entekhabi, D. Vegetation optical depth and scattering albedo retrieval using time series of dual-polarized L-band radiometer observations. Remote Sens. Environ. 2016, 172, 178-189
Owe, M.; de Jeu, R.;Walker, J. A methodology for surface soil moisture and vegetation optical depth retrieval using the microwave polarization difference index. IEEE Trans. Geosci. Remote Sens. 2001, 39, 1643-1654
Wigneron, J.P.; Parde, M.; Waldteufel, P.; Chanzy, A.; Kerr, Y.; Schmidl, S.; Skou, N. Characterizing the dependence of vegetation model parameters on crop structure, incidence angle, and polarization at L-band. IEEE Trans. Geosci. Remote Sens. 2004, 42, 416-425
Schwank, M.; Wigneron, J.-P.; Lopez-Baeza, E.; Volksch, I.; Matzler, C.; Kerr, Y.H. L-band radiative properties of vine vegetation at the MELBEX III SMOS Cal/Val site. IEEE Trans. Geosci. Remote Sens. 2012, 50, 1587-1601
Fernandez-Moran, R.; Wigneron, J.P.; Lopez-Baeza, E.; Al-Yaari, A.; Coll-Pajaron, A.; Mialon, A.; Miernecki, M.; Parrens, M.; Salgado-Hernanz, P.M.; Schwank, M.; et al. Roughness and vegetation parameterizations at L-band for soil moisture retrievals over a vineyard field. Remote Sens. Environ. 2015, 170, 269-279
Weihermüller, L.; Huisman, J.A.; Lambot, S.; Herbst, M.; Vereecken, H. Mapping the spatial variation of soil water content at the field scale with different ground penetrating radar techniques. J. Hydrol. 2007, 340, 205-216
Brunfeldt, D.R.; Ulaby, F.T. Measured microwave emission and scattering in vegetation canopies. IEEE Trans. Geosci. Remote Sens. 1984, GE-22, 520-524
Jonard, F.; Weihermuller, L.; Schwank, M.; Jadoon, K.Z.; Vereecken, H.; Lambot, S. Estimation of hydraulic properties of a sandy soil using ground-based active and passive microwave remote sensing. IEEE Trans. Geosci. Remote Sens. 2015, 53, 3095-3109
Schwank, M.;Wiesmann, A.;Werner, C.; Matzler, C.;Weber, D.; Murk, A.; Volksch, I.;Wegmuller, U. ELBARA II, an L-band radiometer system for soil moisture research. Sensors 2010, 10, 584-612
Lancashire, P.D.; Bleiholder, H.; Boom, T.V.D.; Langelüddeke, P.; Stauss, R.; Weber, E.; Witzenberger, A. A uniform decimal code for growth stages of crops and weeds. Ann. Appl. Biol. 1991, 119, 561-601
Zadoks, J.C.; Chang, T.T.; Konzak, C.F. A decimal code for the growth stages of cereals. Weed Res. 1974, 14, 415-421
Wang, J.R.; Choudhury, B.J. Remote sensing of soil moisture content, over bare field at 1.4 GHz frequency. J. Geophys. Res. 1981, 86, 5277-5282
Escorihuela, M.J.; Kerr, Y.H.; de Rosnay, P.;Wigneron, J.P.; Calvet, J.C.; Lemaitre, F. A simple model of the bare soil microwave emission at L-band. IEEE Trans. Geosci. Remote Sens. 2007, 45, 1978-1987
Wigneron, J.P.; Laguerre, L.; Kerr, Y.H. A simple parameterization of the L-band microwave emission from rough agricultural soils. IEEE Trans. Geosci. Remote Sens. 2001, 39, 1697-1707
Lawrence, H.; Wigneron, J.-P.; Demontoux, F.; Mialon, A.; Kerr, Y.H. Evaluating the semiempirical H-Q model used to calculate the L-band emissivity of a rough bare soil. IEEE Trans. Geosci. Remote Sens. 2013, 51, 4075-4084
Wang, J.R.; O'Neill, P.E.; Jackson, T.J.; Engman, E.T. Multifrequency measurements of the effects of soil moisture, soil texture, and surface roughness. IEEE Trans. Geosci. Remote Sens. 1983, GE-21, 44-51
Mironov, V.; Kerr, Y.;Wigneron, J.-P.; Kosolapova, L.; Demontoux, F. Temperature-and texture-dependent dielectric model for moist soils at 1.4 GHz. IEEE Geosci. Remote Sens. Lett. 2013, 10, 419-423
Huyer, W.; Neumaier, A. Global optimization by multilevel coordinate search. J. Glob. Optim. 1999, 14, 331-355
Ulaby, F.; Moore, K.; Fung, K. Microwave Remote Sensing, Active and Passive, Volume III: From Theory to Applications; Artech House: Norwood, MA, USA, 1986; p. 1523
Jackson, T.J.; Schmugge, T.J. Vegetation effects on the microwave emission of soils. Remote Sens. Environ. 1991, 36, 203-212
O'Neill, P.; Chan, S.; Njoku, E.; Jackson, T.; Bindlish, R. Soil Moisture Active Passive (SMAP). Algorithm Theoretical Basis Document (ATBD). Level 2 & 3 Soil Moisture (Passive) Data Products; JPL: Pesadena, CA, USA, 2015
Zakharova, E.; Calvet, J.C.; Lafont, S.; Albergel, C.; Wigneron, J.P.; Pardé, M.; Kerr, Y.; Zribi, M. Spatial and temporal variability of biophysical variables in Southwestern France from airborne L-band radiometry. Hydrol. Earth Syst. Sci. 2012, 16, 1725-1743
Entekhabi, D.; Reichle, R.H.; Koster, R.D.; Crow, W.T. Performance metrics for soil moisture retrievals and application requirements. J. Hydrometeorol. 2010, 11, 832-840
Ulaby, F.;Wilson, E. Microwave attenuation properties of vegetation canopies. IEEE Trans. Geosci. Remote Sens. 1985, GE-23, 746-753
Schlenz, F.; dall'Amico, J.T.; Mauser, W.; Loew, A. Analysis of SMOS brightness temperature and vegetation optical depth data with coupled land surface and radiative transfer models in Southern Germany. Hydrol. Earth Syst. Sci. 2012, 16, 3517-3533
Njoku, E.G.; Kong, J.-A. Theory for passive microwave remote sensing of near-surface soil moisture. J. Geophys. Res. 1977, 82, 3108-3118