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Remote Sensing Vegetation Hydrological States Using Passive Microwave Measurements

Qilong Min, Bing Lin, Rui Li
2010 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
Plant water content and temperature of the Amazon forest from satellite microwave radiometry. 1994.  ...  Method and data sets Physical properties of vegetation, such as plant water content, vegetation coverage, canopy structure, vegetation phenology, and physical temperature, are major factors in determining  ... 
doi:10.1109/jstars.2009.2032557 fatcat:znbrffjvr5gqjalzf7aq6qbmgy

Detecting Forest Response to Droughts with Global Observations of Vegetation Water Content

Alexandra G. Konings, Sassan S. Saatchi, Christian Frankenberg, Michael Keller, Victor Leshyk, William R.L. Anderegg, Vincent Humphrey, Ashley M. Matheny, Anna Trugman, Lawren Sack, Elizabeth Agee, Mallory L. Barnes (+24 others)
2021 Global Change Biology  
Unlike water potential, which requires demanding in situ measurements, VWC can be retrieved from remote sensing measurements, particularly at microwave frequencies using radar and radiometry.  ...  the non-linear relationship between average leaf or branch water potential and water content commonly used in plant hydraulics.  ...  The research carried out at the Jet Propulsion Laboratory, California Institute of Technology, was under a contract with the National  ... 
doi:10.1111/gcb.15872 pmid:34478589 pmcid:PMC9293345 fatcat:k3qlbeyt2jcopetjsjtaj5tblq

Boots on the Ground and Eyes in the Sky: A Perspective on Estimating Fire Danger from Soil Moisture Content

Sonisa Sharma, Kundan Dhakal
2021 Fire  
Lately, the merit of soil moisture in predicting fuel moisture content and the likelihood of wildfire occurrence has been widely realized.  ...  From this viewpoint, the authors discuss various approaches deployed to evaluate wildfire danger, from in-situ observations to satellite-based fire prediction systems.  ...  Their critical review of the manuscript and suggestions helped with substantial improvements. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/fire4030045 fatcat:od7sq7nuffcuddvsewtboknlti

Monitoring post-fire recovery of various vegetation biomes using multi-wavelength satellite remote sensing

E. Bousquet, A. Mialon, N. Rodriguez-Fernandez, S. Mermoz, Y. Kerr
2022 Biogeosciences  
Anthropogenic climate change is now considered to be one of the main factors causing an increase in both the frequency and severity of wildfires.  ...  The study was performed using several remotely sensed quantities ranging from visible–infrared vegetation indices (the enhanced vegetation index (EVI)) to vegetation opacities obtained at several passive-microwave  ...  The authors wish to thank David Chaparro and Matthias Forkel for their relevant comments and reviews which considerably improved the paper. Financial support.  ... 
doi:10.5194/bg-19-3317-2022 doaj:4ba8e6e3812a4c7684bc3e995de939f3 fatcat:sz6kw3vidrb5fpo4dvgxbkwjty

Radiometric estimation of water vapor content over Brazil

P.K. Karmakar, M. Maiti, S. Sett, C.F. Angelis, L.A.T. Machado
2011 Advances in Space Research  
The radiometric output of two channels of the radiometer in the form of brightness temperature at 23.834 GHz and 30 GHz, initially, were used to find out the ambient water vapor content and the non-precipitable  ...  Instead, while measuring the vapor content for separation of vapor and cloud liquid, one of them should be a few GHz left or right from the resonance line i.e., at 23.834 GHz and the other one should be  ...  Acknowledgements We thank CNPq PCI programme for partial support of this research (Proc. 680002/2007 -3). References Allnutt, A.L. Slant path attenuation and space diversity results using  ... 
doi:10.1016/j.asr.2011.06.032 fatcat:y2o5kmynp5cidlfbiwtdrvq5w4

Satellite Observations of the Tropical Terrestrial Carbon Balance and Interactions with the Water Cycle During the 21st Century

John Worden, Sassan Saatchi, Michael Keller, Anthony Bloom, Rong Fu, Sarah Worden, Junjie Liu, Nicholas Parazoo, Joshua B. Fisher, Helen Worden, Yi Yin, Kevin Bowman (+9 others)
2021 Reviews of Geophysics  
Lee et al. (2013) used SIF and canopy water content measurements to show the impact of water stress on the Amazon forest.  ...  Saatchi et al. (2013) showed that repeated droughts in the Amazon have a lasting effect on forest carbon and forest stock using satellite-based estimates of rainfall and canopy water content.  ... 
doi:10.1029/2020rg000711 fatcat:4z72x2nyxnby5kzncjjucm2xza

Microwave remote sensing from space

K.R. Carver, C. Elachi, F.T. Ulaby
1985 Proceedings of the IEEE  
water vapor and temperatures, vegetation classification and stress, ice types and dynamics, and hydrological characteristics.  ...  Microwave radars and radiometers offer enhanced sensitivities to the geometrical characteristics of the earth's surface and its cover, t o water in all its forms-soil and vegetation moisture, ice, wetlands  ...  Microwave radiometry from space began with studies of planetary emission.  ... 
doi:10.1109/proc.1985.13230 fatcat:uelvzywrg5d6pms5zc7j2uqggm

2005 Index

2005 IEEE Transactions on Geoscience and Remote Sensing  
Rain; Snow Atmospheric temperature neural-network technique for the retrieval of atmospheric temperature and moisture profiles.  ...  ., + , T-GRS Sep 05 2000-2007 fuel moisture content by inversion of radiative transfer models, simulate equiv. water thickness and dry matter content, estim.  ... 
doi:10.1109/tgrs.2005.861474 fatcat:peucpnumgfchhhwbn665yvx7ue

Relationship Between Vegetation Microwave Optical Depth and Cross-Polarized Backscatter From Multiyear Aquarius Observations

Kathrina Rotzer, Carsten Montzka, Dara Entekhabi, Alexandra G. Konings, Kaighin A. McColl, Maria Piles, Harry Vereecken
2017 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
These maps allow future studies of scaling and heterogeneity effects of vegetation on soil moisture retrieval at the coarser scales of land microwave radiometry.  ...  Three years of Aquarius/SAC-D data were used to establish a relationship between the cross-polarized backscattering coefficient σ H V and VOD derived from a multitemporal passive dual-channel algorithm  ...  In regions where the plant phenology is characterized by leaf-drop (senescence in boreal forests) or seasonal water-loss (monsoonal tropical forests), the VOD and σ HV can be out-of-phase.  ... 
doi:10.1109/jstars.2017.2716638 fatcat:dfmuztgozje7hl4jpdl2txnfaq

Denitrification and associated nitrous oxide and carbon dioxide emissions from the Amazonian wetlands

Jérémy Guilhen, Ahmad Al Bitar, Sabine Sauvage, Marie Parrens, Jean-Michel Martinez, Gwenael Abril, Patricia Moreira-Turcq, José-Miguel Sánchez-Pérez
2020 Biogeosciences  
We adapted a simple denitrification model to the case of tropical wetlands and forced it by open water surface extent products from the Soil Moisture and Ocean Salinity (SMOS) satellite.  ...  In the future, the use of higher-resolution remote sensing products from sensor fusion or new sensors like the Surface Water and Ocean Topography (SWOT) mission will permit the transposition of the approach  ...  Water surface extents from L-band microwave radiometry The soil water fraction (SWAF) retrieved from L-band microwave radiometry is used to determine the open water surfaces .  ... 
doi:10.5194/bg-17-4297-2020 fatcat:3q6xrmllu5gatj5xsqtzvrxsmy

Interacting Effects of Leaf Water Potential and Biomass on Vegetation Optical Depth

Mostafa Momen, Jeffrey D. Wood, Kimberly A. Novick, Robert Pangle, William T. Pockman, Nate G. McDowell, Alexandra G. Konings
2017 Journal of Geophysical Research - Biogeosciences  
We used measurements of ψ L from three sites across the US-a mixed deciduous forests in Indiana and Missouri and a piñon-juniper woodland in New Mexico-to validate the conceptual model.  ...  At the global scale, accounting for a combination of biomass and estimated ψ L (based on satellite surface soil moisture data) increased correlations with VOD by~15% and 30% compared to biomass and water  ...  Acknowledgments The LAI data product was retrieved from the online Data Pool, courtesy of the  ... 
doi:10.1002/2017jg004145 fatcat:243u6b7bgnd4fbexmmgrxuzt6y

Airborne GNSS-R: A key enabling technology for environmental monitoring

Adrian Perez-Portero, Joan FRANCESC Munoz-MARTIN, Hyuk Park, Adriano Camps
2021 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
LEO constellations of small satellites have the same coverage with improved spatial resolution and revisit times by using data fusion techniques.  ...  GEO satellites can retrieve measurements over large areas, but with spatial resolutions on the order of thousands of meters per pixel.  ...  Soil Moisture Vegetation health is closely linked to the water content found in the soil, where plants thrive.  ... 
doi:10.1109/jstars.2021.3076003 fatcat:7lw4isvmzbdb7ok7vzgamyxwvi

Closing the water cycle from observations across scales: Where do we stand?

Wouter Dorigo, Stephan Dietrich, Filipe Aires, Luca Brocca, Sarah Carter, Jean-François Cretaux, David Dunkerley, Hiroyuki Enomoto, René Forsberg, Andreas Güntner, Michaela I. Hegglin, Rainer Hollmann (+20 others)
2021 Bulletin of The American Meteorological Society - (BAMS)  
consistently to characterize water cycle variability at multiple spatial and temporal scales.Here, we review the capability of ground-based and remotely sensed observations of water cycle ECVs to consistently  ...  AbstractLife on Earth vitally depends on the availability of water.  ...  Acknowledgments We thank Gabi Hegerl and Robert Reinecke for their advice on the manuscript and Andrea Wessler for graphic editing.  ... 
doi:10.1175/bams-d-19-0316.1 fatcat:quowsacbdvhv7phvlno653t7ii

Next-generation terrestrial carbon monitoring [chapter]

Steven W. Running, Ramakrishna R. Nemani, John R. G. Townshend, Dennis D. Baldocchi
2009 Carbon Sequestration and Its Role in the Global Carbon Cycle  
Spatial pattern of MODIS NPP anomalies from 2000 thru 2005 [Zhao and Running, 2008]. Plate 6.  ...  Global distribution of long-term carbon dioxide, water vapor and energy flux measurement sites, associated with the FLUxNET program and its regional partners.  ...  Townshend, and D. Baldocchi have been sponsored by the Earth Science Division of NASA and the Department of Energy Terrestrial Carbon Program.  ... 
doi:10.1029/2006gm000526 fatcat:xyutg62k65gurfgmzo4qgmnnrm

Remote sensing for irrigated agriculture: examples from research and possible applications

Wim G.M Bastiaanssen, David J Molden, Ian W Makin
2000 Agricultural Water Management  
An important challenge in the ®eld of water resources is to utilize the timely, objective and accurate information provided by remote sensing. #  ...  These studies have demonstrated that quantitative assessment of the soil-vegetation-atmosphere-transfer processes can lead to a better understanding of the relationships between crop growth and water management  ...  Vorosmarthy et al. (1996) and Choudhury et al. (2000) used passive microwave data from Nimbus (37 GHz) with pixels of tens of kilometers to estimate the span width of the Amazon and the Rio de la Plata  ... 
doi:10.1016/s0378-3774(00)00080-9 fatcat:f3b4syk4dfgt3egmuvhiwi5gea
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