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Monitoring Sugarcane Growth Using ENVISAT ASAR Data

Hui Lin, Jinsong Chen, Zhiyuan Pei, Songling Zhang, Xianzhi Hu
2009 IEEE Transactions on Geoscience and Remote Sensing  
The analysis shows that sugarcane fields have increasing temporal radar response trend with sugarcane growth and ratio of ASAR HV to HH data has a better correlation with the increase of sugarcane LAI.  ...  The empirical models were also established to estimate LAI of sugarcane using the HV/HH polarization ratio.  ...  ACKNOWLEDGMENT The authors would like to thank the people from the Institute of Planning and Designing of Agriculture Ministry of China for their efforts in collecting the in situ data, and colleagues  ... 
doi:10.1109/tgrs.2009.2015769 fatcat:meyrq7hftvhcvdjgswprycu4lm

Combining multifrequency microwave and optical data for crop management

M Moran
1997 Remote Sensing of Environment  
T he potential for th e combined use of microwave and optical data for crop management is explored with the use of images acquired in the visible, near-infrared, and thermal .spectrum and the synthetic  ...  The images were obtained during June 1994 and covered an agricultural site composed of large fields of partial-cover cotton, near-full-cover alfalfa, and bare soil fields of varying roughness.  ...  Price (1992) used such a model to derive a semiempirical relation between a vegetation index (ranging from 0 to 1) and GLAI.  ... 
doi:10.1016/s0034-4257(96)00243-x fatcat:2sx3vd65mrfrdiaqzrw7iymdda

Combining of the H/A/Alpha and Freeman–Durden Polarization Decomposition Methods for Soil Moisture Retrieval from Full-Polarization Radarsat-2 Data

Qiuxia Xie, Qingyan Meng, Linlin Zhang, Chunmei Wang, Qiao Wang, Shaohua Zhao
2018 Advances in Meteorology  
We used the H/A/Alpha polarization decomposition approach to extract accurate threshold values of decomposed scattering components.  ...  Here, we collected such data at different growth stages of maize using Bragg and X-Bragg scattering models based on the Freeman–Durden polarization decomposition method.  ...  A variety of theoretical, empirical, and semiempirical SM retrieval models have been developed, including the classical IEM, AIEM, Oh, Dubois, and Shi models [4] .  ... 
doi:10.1155/2018/9436438 fatcat:gutchlws7ndezgzf7gtwwojvza

Biophysical parameter estimations using multidirectional spectral measurements

J. Qi, F. Cabot, M.S. Moran, G. Dedieu
1995 Remote Sensing of Environment  
The simulated data are then used in the inversion of a physically based BRDF model to estimate vegetation optical properties (leaf reflectance and transmittance) and leaf area index (LAI).  ...  To investigate the possible development of an algorithm to quantitatively estimate vegetation properties independent of vegetation type, a model-to-model approach is proposed.  ...  Michael Ottman at the Department of Plant Sciences, University of Arizona for his cooperation with the mini-alfalfa experiment.  ... 
doi:10.1016/0034-4257(95)00102-7 fatcat:qtpwfszpwjaxnboshkmgx5i6oy

Time Series of Quad-Pol C-Band Synthetic Aperture Radar for the Forecasting of Crop Biophysical Variables of Barley Fields Using Statistical Techniques

Ana E. Sipols, Rubén Valcarce-Diñeiro, Maria Teresa Santos-Martín, Nilda Sánchez, Clara Simón de Blas
2022 Remote Sensing  
This paper aims to both fit and predict crop biophysical variables with a SAR image series by performing a factorial experiment and estimating time series models using a combination of forecasts.  ...  The model equations showed a positive contribution of meteorological variables and a strong temporal component in the crop's development, as occurs in natural conditions.  ...  For bare soil areas, the semiempirical models of Chen, Oh, and Shi [25] [26] [27] [28] are commonly used for soil moisture in the literature [29, 30] .  ... 
doi:10.3390/rs14030614 fatcat:tzuycyuud5bi5bsvoykullaede

A Normalization Scheme of Bidirectional Reflectances and Normalized Vegetation Indices for Short-Term Multi-Angular Spot Satellite Images

Chien-Hui Liu
2003 Journal of Marine Science and Technology  
This scheme will correct both atmospheric and bidirectional effect for short-term multi-temporal SPOT data. Five SPOT images scanned within twelve days are used.  ...  This may be due to the effectiveness of SAVI in the reduction of viewing zenith angle effect induced by the soil and shadow and the error of the atmospheric correction model.  ...  ACKNOWLEDGEMENTS This study was financially supported by the National Science Council of the Republic of China (grant No. NSC91-2212-E-265-001).  ... 
doi:10.51400/2709-6998.2291 fatcat:7dmubvya2jdz5g74zfcc7l6n4e

AEOLIAN PROCESSES AND THE BIOSPHERE

Sujith Ravi, Paolo D'Odorico, David D. Breshears, Jason P. Field, Andrew S. Goudie, Travis E. Huxman, Junran Li, Gregory S. Okin, Robert J. Swap, Andrew D. Thomas, Scott Van Pelt, Jeffrey J. Whicker (+1 others)
2011 Reviews of Geophysics  
1] Aeolian processes affect the biosphere in a wide variety of contexts, including landform evolution, biogeochemical cycles, regional climate, human health, and desertification.  ...  Here we review recent literature on aeolian processes and their interactions with the biosphere, focusing on (1) geography of dust emissions, (2) impacts, interactions, and feedbacks, (3) drivers of dust  ...  Other empirical and semiempirical models are used in other countries and have been proposed for use in the United States.  ... 
doi:10.1029/2010rg000328 fatcat:hx667ibs7zfz3k4xsqv6qd4s64

Ecogeographically and Non-Ecogeographically Forecasting Discontinuous Canopied Simulium damnosum s.l. Habitats by Interpolating Metrizable Sub-Mixel Mean Solar Exoatmospheric Quantum Scalar Irradiance where θi is a Zenith Angle and Diatomically Etiolated Xanthophylls with Azimutually Isotropic Sources of Chloroplastic Carotenoid Zeaxanthins Spectrally Extracted from a Decomposed RapidEye™ Red Edge Normalized Difference Vegetation Index Reference Targeted Biosignature: A Case Study in Burkina Faso and Uganda

Benjamin G. Jacob, Robert J.Novak
2015 Journal of Remote Sensing & GIS  
A radiometric calibration tool then calibrated the spaceborne sensor data to radiance and top-of-atmosphere (ToA) reflectance.Additionally,Fast Line-of-sight Atmospheric Analysis of Spectral Hypercubes  ...  a function of leaf angle distribution.We employed a successive progressive algorithm, a two stream radiative atmospheric transfer analyses, a geometric-optical model and a bidirectional reflectance distribution  ...  Jalil at the College of Public Health, University of South Florida who helped describe the remote variables.  ... 
doi:10.4172/2469-4134.1000152 fatcat:gpqnvnehhvfchajg3rx5i6hije

100 Years Of Progress In Boundary-Layer Meteorology

Margaret A. LeMone, Wayne M. Angevine, Christopher S. Bretherton, Fei Chen, Jimy Dudhia, Evgeni Fedorovich, Kristina B. Katsaros, Donald H. Lenschow, Larry Mahrt, Edward G. Patton, Jielun Sun, Michael Tjernström (+1 others)
2019 Meteorological Monographs  
(starting in the 1970s-80s); taking advantage of the opportunities afforded by the development of large-eddy simulations (1970s), direct numerical simulations (1990s), and a host of instruments to sample  ...  The paper closes with a brief summary, some lessons learned, and a look to the future.  ...  (NGM) and Regional Analysis and Forecast System (RAFS) models.  ... 
doi:10.1175/amsmonographs-d-18-0013.1 fatcat:gypsvsf2mra3nnihxsrxr5zzim

100 YEARS OF PROGRESS IN GAS-PHASE ATMOSPHERIC CHEMISTRY RESEARCH

T. J. Wallington, J.H. Seinfeld, J.R. Barker
2018 Meteorological Monographs  
A hundred years ago, quantitative theories of chemical reaction rates were nonexistent.  ...  The atmosphere contains an immense number of gas-phase organic compounds, a result of emissions from plants and animals, natural and anthropogenic combustion processes, emissions from oceans, and from  ...  Leonardo da Vinci (1452-1519) described a hygrometer operating on the same principle but using cotton as absorbant (Walker 2012) .  ... 
doi:10.1175/amsmonographs-d-18-0008.1 fatcat:kwxniyynfzfzbel3czs7mbc4xa

Remote sensing-based analysis of land cover detrimental for ecosystem services in fragile lands of Ethiopia

Thomas Koellner, Christopher Conrad, Jentsch Anke, Franz Schmid, Heike Feldhaar
2015 unpublished
Land use/land cover type mainly determines the sustainability of supplies of ecosystem services and biodiversity supported.  ...  Land use/land cover classes were derived by classifying RapidEye images using Random Forests classification approach.  ...  R.; McNairn, H.; Smith, A.; Hu, B. Estimating crop stresses, aboveground dry biomass and yield of corn using multi-temporal optical data combined with a radiation use efficiency model. Remote Sens.  ... 
fatcat:vwmtnszvh5ffvfdosgdnpne2ei

Linear Semi-Empirical Kernel-Driven Bidirectional Reflectance Distribution Function Models in Monitoring Semi-Arid Grasslands from Space

Mark Chopping
unpublished
Abstract Of the five sources of information available in optical remote sensing data from space (spectral, temporal, locational, directional and wave polarity), little use has been made of the last two  ...  The nature and extent of the impact of the BRDF on visible and near-infrared reflectance data are investigated using observations over different grassland communities in a semi-arid zone in Inner Mongolia  ...  analysis of a multitemporal series is to be optimal.  ... 
fatcat:zqsma74ax5btpmnpg6bf4t4eoq

Atmospheric infra-red radiation over Christchurch, New Zealand [article]

N. J. Tapper, University Of Canterbury
2011
The energy balance model, validated against field observations and making no direct allowance for IR↓ variation across the city, predicted Christchurch's nocturnal heat island with a reasonable degree  ...  The major concern of this study was to relate spatial and temporal variations of atmospheric infra-red radiation (IR↓) in Christchurch to peculiar attributes of the urban atmospheric environment, and to  ...  a better temporal and spatial resolution.  ... 
doi:10.26021/6035 fatcat:6ge5pqwnbnggrmdfxdg56zp5ny