Works by Walker, Jeffrey P.

Results: 63

A land data assimilation system for simultaneous simulation of soil moisture and vegetation dynamics.

Published in:

Journal of Geophysical Research. Atmospheres, 2015, v. 120, n. 12, p. 5910, doi. 10.1002/2014JD022895

By:

Sawada, Yohei;
Koike, Toshio;
Walker, Jeffrey P.

Publication type:

Article

Evaluation of the observation operator Jacobian for leaf area index data assimilation with an extended Kalman filter.

Published in:

Journal of Geophysical Research. Atmospheres, 2010, v. 115, n. D9, p. n/a, doi. 10.1029/2009JD012912

By:

Rüdiger, Christoph;
Albergel, Clément;
Mahfouf, Jean-François;
Calvet, Jean-Christophe;
Walker, Jeffrey P.

Publication type:

Article

Scanning multichannel microwave radiometer snow water equivalent assimilation.

Published in:

Journal of Geophysical Research. Atmospheres, 2007, v. 112, n. D7, p. n/a, doi. 10.1029/2006JD007209

By:

Dong, Jiarui;
Walker, Jeffrey P.;
Houser, Paul R.;
Sun, Chaojiao

Publication type:

Article

Soil moisture initialization for climate prediction: Assimilation of scanning multifrequency microwave radiometer soil moisture data into a land surface model.

Published in:

Journal of Geophysical Research. Atmospheres, 2006, v. 111, n. D20, p. n/a, doi. 10.1029/2006JD007190

By:

Ni-Meister, Wenge;
Houser, Paul R.;
Walker, Jeffrey P.

Publication type:

Article

Nitrogen loads explain primary productivity in estuaries at the ecosystem scale.

Published in:

Limnology & Oceanography, 2015, v. 60, n. 5, p. 1751, doi. 10.1002/lno.10136

By:

Woodland, Ryan J.;
Thomson, James R.;
Mac Nally, Ralph;
Reich, Paul;
Evrard, Victor;
Wary, Fiona Y.;
Walker, Jeffrey P.;
Cook, Perran L. M.

Publication type:

Article

SMAP soil moisture drying more rapid than observed in situ following rainfall events.

Published in:

Geophysical Research Letters, 2016, v. 43, n. 15, p. 8068, doi. 10.1002/2016GL069946

By:

Shellito, Peter J.;
Small, Eric E.;
Colliander, Andreas;
Bindlish, Rajat;
Cosh, Michael H.;
Berg, Aaron A.;
Bosch, David D.;
Caldwell, Todd G.;
Goodrich, David C.;
McNairn, Heather;
Prueger, John H.;
Starks, Patrick J.;
Velde, Rogier;
Walker, Jeffrey P.

Publication type:

Article

An Intercomparison Study of Algorithms for Downscaling SMAP Radiometer Soil Moisture Retrievals.

Published in:

Journal of Hydrometeorology, 2020, v. 21, n. 8, p. 1761, doi. 10.1175/JHM-D-19-0034.1

By:

LI FANG;
XIWU ZHAN;
JIFU YIN;
JICHENG LIU;
SCHULL, MITCHELL;
WALKER, JEFFREY P.;
JUN WEN;
COSH, MICHAEL H.;
LAKHANKAR, TARENDRA;
COLLINS, CHANDRA HOLIFIELD;
BOSCH, DAVID D.;
STARKS, PATRICK J.

Publication type:

Article

Effect of Rainfall Events on SMAP Radiometer-Based Soil Moisture Accuracy Using Core Validation Sites.

Published in:

Journal of Hydrometeorology, 2020, v. 21, n. 2, p. 255, doi. 10.1175/JHM-D-19-0122.1

By:

Colliander, Andreas;
Jackson, Thomas J.;
Berg, Aaron;
Bosch, D. D.;
Caldwell, Todd;
Chan, Steven;
Cosh, Michael H.;
Collins, C. Holifield;
Martínez-Fernández, Jose;
McNairn, Heather;
Prueger, J. H.;
Starks, P. J.;
Walker, Jeffrey P.;
Yueh, Simon H.

Publication type:

Article

Uncertainty of Reference Pixel Soil Moisture Averages Sampled at SMAP Core Validation Sites.

Published in:

Journal of Hydrometeorology, 2019, v. 20, n. 8, p. 1553, doi. 10.1175/JHM-D-19-0049.1

By:

Chen, Fan;
Crow, Wade T.;
Cosh, Michael H.;
Colliander, Andreas;
Asanuma, Jun;
Berg, Aaron;
Bosch, David D.;
Caldwell, Todd G.;
Collins, Chandra Holifield;
Jensen, Karsten Høgh;
Martínez-Fernández, Jose;
McNairn, Heather;
Starks, Patrick J.;
Su, Zhongbo;
Walker, Jeffrey P.

Publication type:

Article

Identification of Hydrologic Models, Optimized Parameters, and Rainfall Inputs Consistent with In Situ Streamflow and Rainfall and Remotely Sensed Soil Moisture.

Published in:

Journal of Hydrometeorology, 2018, v. 19, n. 8, p. 1305, doi. 10.1175/JHM-D-17-0240.1

By:

WRIGHT, ASHLEY J.;
WALKER, JEFFREY P.;
PAUWELS, VALENTIJN R. N.

Publication type:

Article

Evaluation of Model Parameter Convergence when Using Data Assimilation for Soil Moisture Estimation.

Published in:

Journal of Hydrometeorology, 2014, v. 15, n. 1, p. 359, doi. 10.1175/JHM-D-12-0175.1

By:

Dumedah, Gift;
Walker, Jeffrey P.

Publication type:

Article

On the use of dual-polarized multi-angular observations of P-band brightness temperature for soil moisture profile retrieval in thawed mineral soil.

Published in:

International Journal of Remote Sensing, 2024, v. 45, n. 5, p. 1498, doi. 10.1080/01431161.2024.2313993

By:

Muzalevskiy, Konstantin V.;
Walker, Jeffrey P.;
Brakhasi, Foad;
Ye, Nan;
Wu, Xiaoling;
Shen, Xiaoji

Publication type:

Article

Three-dimensional soil moisture profile retrieval by assimilation of near-surface measurements: Simplified Kalman filter covariance forecasting and field application.

Published in:

Water Resources Research, 2002, v. 38, n. 12, p. 37-1, doi. 10.1029/2002WR001545

By:

Walker, Jeffrey P.;
Willgoose, Garry R.;
Kalma, Jetse D.

Publication type:

Article

The Nerrigundah Data Set: Soil moisture patterns, soil characteristics, and hydrological flux measurements.

Published in:

Water Resources Research, 2001, v. 37, n. 11, p. 2653, doi. 10.1029/2001WR000545

By:

Walker, Jeffrey P.;
Willgoose, Garry R.;
Kalma, Jetse D.

Publication type:

Article

On the effect of digital clevation model accuracy on hydrology and geemorphology

Published in:

Water Resources Research, 1999, v. 35, n. 7, p. 2259, doi. 10.1029/1999WR900034

By:

Walker, Jeffrey P.;
Willgoose, Garry R.

Publication type:

Article

Multidecadal Trend of Basin-Scale Evapotranspiration Estimated Using AVHRR Data in the Krishna River Basin, India.

Published in:

2013

By:

Teluguntla, Pardhasaradhi;
Ryu, Dongryeol;
George, Biju;
Walker, Jeffrey P.

Publication type:

Abstract

Influence of initial state and residual stresses on the modulus-density relationship of geomaterials: insights from multiple experimental setups.

Published in:

International Journal of Pavement Engineering, 2024, v. 25, n. 1, p. 1, doi. 10.1080/10298436.2024.2418920

By:

Tophel, Amir;
Dutta, Troyee Tanu;
Walker, Jeffrey P.;
Bodin, Didier;
Kodikara, Jayantha

Publication type:

Article

Soil moisture initialization for climate prediction: Characterization of model and observation errors.

Published in:

Journal of Geophysical Research. Atmospheres, 2005, v. 110, n. D13, p. n/a, doi. 10.1029/2004JD005745

By:

Ni-Meister, Wenge;
Walker, Jeffrey P.;
Houser, Paul R.

Publication type:

Article

A methodology for snow data assimilation in a land surface model.

Published in:

Journal of Geophysical Research. Atmospheres, 2004, v. 109, n. D8, p. n/a, doi. 10.1029/2003JD003765

By:

Sun, Chaojiao;
Walker, Jeffrey P.;
Houser, Paul R.

Publication type:

Article

Impact of bias correction to reanalysis products on simulations of North American soil moisture and hydrological fluxes.

Published in:

Journal of Geophysical Research. Atmospheres, 2003, v. 108, n. D16, p. n/a, doi. 10.1029/2002JD003334

By:

Berg, Aaron A.;
Famiglietti, James S.;
Walker, Jeffrey P.;
Houser, Paul R.

Publication type:

Article

A methodology for initializing soil moisture in a global climate model: Assimilation of near-surface soil moisture observations.

Published in:

Journal of Geophysical Research. Atmospheres, 2001, v. 106, n. D11, p. 11761, doi. 10.1029/2001JD900149

By:

Walker, Jeffrey P.;
Houser, Paul R.

Publication type:

Article

Version 4 of the SMAP Level-4 Soil Moisture Algorithm and Data Product.

Published in:

Journal of Advances in Modeling Earth Systems, 2019, v. 11, n. 10, p. 3106, doi. 10.1029/2019MS001729

By:

Reichle, Rolf H.;
Qing Liu;
Koster, Randal D.;
Crow, Wade T.;
De Lannoy, Gabrielle J. M.;
Kimball, John S.;
Ardizzone, Joseph V.;
Bosch, David;
Colliander, Andreas;
Cosh, Michael;
Kolassa, Jana;
Mahanama, Sarith P.;
Prueger, John;
Starks, Patrick;
Walker, Jeffrey P.

Publication type:

Article

Global joint assimilation of GRACE and SMOS for improved estimation of root-zone soil moisture and vegetation response.

Published in:

2018

By:

Siyuan Tian;
Renzullo, Luigi J.;
Van Dijk, Albert I. J. M.;
Tregoning, Paul;
Walker, Jeffrey P.

Publication type:

Abstract

A Comparison of the Discrete Cosine and Wavelet Transforms for Hydrologic Model Input Data Reduction.

Published in:

Hydrology & Earth System Sciences Discussions, 2017, p. 1, doi. 10.5194/hess-2017-26

By:

Wright, Ashley;
Walker, Jeffrey P.;
Robertson, David E.;
Pauwels, Valentijn R. N.

Publication type:

Article

Flood mapping under vegetation using single SAR acquisitions.

Published in:

Geophysical Research Abstracts, 2019, v. 21, p. 1

By:

Grimaldi, Stefania;
Xu, Jin;
Li, Yuan;
Pauwels, Valentijn R.N.;
Walker, Jeffrey P.

Publication type:

Article

Active microwave remote sensing for soil moisture measurement: a field evaluation using ERS?2.

Published in:

Hydrological Processes, 2004, v. 18, n. 11, p. 1975, doi. 10.1002/hyp.1343

By:

Jeffrey P. Walker;
Paul R. Houser;
Garry R. Willgoose

Publication type:

Article

Extended versus Ensemble Kalman Filtering for Land Data Assimilation.

Published in:

Journal of Hydrometeorology, 2002, v. 3, n. 6, p. 728, doi. 10.1175/1525-7541(2002)003<0728:EVEKFF>2.0.CO;2

By:

Reichle, Rolf H.;
Walker, Jeffrey P.;
Koster, Randal D.;
Houser, Paul R.

Publication type:

Article

One-Dimensional Soil Moisture Profile Retrieval by Assimilation of Near-Surface Measurements: A Simplified Soil Moisture Model and Field Application.

Published in:

Journal of Hydrometeorology, 2001, v. 2, n. 4, p. 356, doi. 10.1175/1525-7541(2001)002<0356:ODSMPR>2.0.CO;2

By:

Walker, Jeffrey P.;
Willgoose, Garry R.;
Kalma, Jetse D.

Publication type:

Article

Upscaling sparse ground-based soil moisture observations for the validation of coarse-resolution satellite soil moisture products.

Published in:

Reviews of Geophysics, 2012, v. 50, n. 2, p. n/a, doi. 10.1029/2011RG000372

By:

Crow, Wade T.;
Berg, Aaron A.;
Cosh, Michael H.;
Loew, Alexander;
Mohanty, Binayak P.;
Panciera, Rocco;
Rosnay, Patricia;
Ryu, Dongryeol;
Walker, Jeffrey P.

Publication type:

Article

Theory-guided machine learning to predict density evolution of sand dynamically compacted under K<sub>o</sub> condition.

Published in:

Acta Geotechnica, 2022, v. 17, n. 8, p. 3479, doi. 10.1007/s11440-021-01431-2

By:

Tophel, Amir;
Walker, Jeffrey P.;
Dutta, Troyee Tanu;
Kodikara, Jayantha

Publication type:

Article

On the Impacts of Observation Location, Timing, and Frequency on Flood Extent Assimilation Performance.

Published in:

Water Resources Research, 2021, v. 57, n. 2, p. 1, doi. 10.1029/2020WR028238

By:

Dasgupta, Antara;
Hostache, Renaud;
Ramsankaran, RAAJ;
Schumann, Guy J.‐P.;
Grimaldi, Stefania;
Pauwels, Valentijn R. N.;
Walker, Jeffrey P.

Publication type:

Article

A Mutual Information‐Based Likelihood Function for Particle Filter Flood Extent Assimilation.

Published in:

Water Resources Research, 2021, v. 57, n. 2, p. 1, doi. 10.1029/2020WR027859

By:

Dasgupta, Antara;
Hostache, Renaud;
Ramsankaran, RAAJ;
Schumann, Guy J.‐P.;
Grimaldi, Stefania;
Pauwels, Valentijn R. N.;
Walker, Jeffrey P.

Publication type:

Article

Deep Learning for an Improved Prediction of Rainfall Retrievals From Commercial Microwave Links.

Published in:

Water Resources Research, 2020, v. 56, n. 7, p. 1, doi. 10.1029/2019WR026255

By:

Pudashine, Jayaram;
Guyot, Adrien;
Petitjean, Francois;
Pauwels, Valentijn R. N.;
Uijlenhoet, Remko;
Seed, Alan;
Prakash, Mahesh;
Walker, Jeffrey P.

Publication type:

Article

On the Use of Adaptive Ensemble Kalman Filtering to Mitigate Error Misspecifications in GRACE Data Assimilation.

Published in:

Water Resources Research, 2019, v. 55, n. 9, p. 7622, doi. 10.1029/2018WR024670

By:

Shokri, Ashkan;
Walker, Jeffrey P.;
Dijk, Albert I. J. M.;
Pauwels, Valentijn R. N.

Publication type:

Article

Performance of Different Ensemble Kalman Filter Structures to Assimilate GRACE Terrestrial Water Storage Estimates Into a High‐Resolution Hydrological Model: A Synthetic Study.

Published in:

Water Resources Research, 2018, v. 54, n. 11, p. 8931, doi. 10.1029/2018WR022785

By:

Shokri, Ashkan;
Walker, Jeffrey P.;
Dijk, Albert I. J. M.;
Pauwels, Valentijn R. N.

Publication type:

Article

Estimating rainfall time series and model parameter distributions using model data reduction and inversion techniques.

Published in:

Water Resources Research, 2017, v. 53, n. 8, p. 6407, doi. 10.1002/2017WR020442

By:

Wright, Ashley J.;
Walker, Jeffrey P.;
Pauwels, Valentijn R. N.

Publication type:

Article

Improved water balance component estimates through joint assimilation of GRACE water storage and SMOS soil moisture retrievals.

Published in:

Water Resources Research, 2017, v. 53, n. 3, p. 1820, doi. 10.1002/2016WR019641

By:

Tian, Siyuan;
Tregoning, Paul;
Renzullo, Luigi J.;
Van Dijk, Albert I. J. M.;
Walker, Jeffrey P.;
Pauwels, Valentijn R. N.;
Allgeyer, Sébastien

Publication type:

Article

A data fusion-based drought index.

Published in:

Water Resources Research, 2016, v. 52, n. 3, p. 2222, doi. 10.1002/2015WR017834

By:

Azmi, Mohammad;
Rüdiger, Christoph;
Walker, Jeffrey P.

Publication type:

Article

Using long-term water balances to parameterize surface conductances and calculate evaporation at 0.05° spatial resolution.

Published in:

Water Resources Research, 2010, v. 46, n. 5, p. n/a, doi. 10.1029/2009WR008716

By:

Zhang, Yongqiang;
Leuning, Ray;
Hutley, Lindsay B.;
Beringer, Jason;
McHugh, Ian;
Walker, Jeffrey P.

Publication type:

Article

Goulburn River experimental catchment data set.

Published in:

Water Resources Research, 2007, v. 43, n. 10, p. n/a, doi. 10.1029/2006WR005837

By:

Rüdiger, Christoph;
Hancock, Greg;
Hemakumara, Herbert M.;
Jacobs, Barry;
Kalma, Jetse D.;
Martinez, Cristina;
Thyer, Mark;
Walker, Jeffrey P.;
Wells, Tony;
Willgoose, Garry R.

Publication type:

Article

Satellite Cross-Talk Impact Analysis in Airborne Interferometric Global Navigation Satellite System-Reflectometry with the Microwave Interferometric Reflectometer.

Published in:

Remote Sensing, 2019, v. 11, n. 9, p. 1120, doi. 10.3390/rs11091120

By:

Onrubia, Raul;
Pascual, Daniel;
Park, Hyuk;
Camps, Adriano;
Rüdiger, Christoph;
Walker, Jeffrey P.;
Monerris, Alessandra

Publication type:

Article

Application of Remote Sensing Data to Constrain Operational Rainfall-Driven Flood Forecasting: A Review.

Published in:

Remote Sensing, 2016, v. 8, n. 6, p. 456, doi. 10.3390/rs8060456

By:

Yuan Li;
Grimaldi, Stefania;
Walker, Jeffrey P.;
Pauwels, Valentijn R. N.

Publication type:

Article

Mapping Flooded Rice Paddies Using Time Series of MODIS Imagery in the Krishna River Basin, India.

Published in:

Remote Sensing, 2015, v. 7, n. 7, p. 8858, doi. 10.3390/rs70708858

By:

Teluguntla, Pardhasaradhi;
Ryu, Dongryeol;
George, Biju;
Walker, Jeffrey P.;
Malano, Hector M.

Publication type:

Article

Use of Soil Moisture Variability in Artificial Neural Network Retrieval of Soil Moisture.

Published in:

Remote Sensing, 2010, v. 2, n. 1, p. 166, doi. 10.3390/rs2010166

By:

Soo-See Chai;
Walker, Jeffrey P.;
Makarynskyy, Oleg;
Kuhn, Michael;
Veenendaal, Bert;
West, Geoff

Publication type:

Article

A Comparative Study of Australian Cartometric and Photogrammetric Digital Elevation Model Accuracy.

Published in:

Photogrammetric Engineering & Remote Sensing, 2006, v. 72, n. 7, p. 771, doi. 10.14358/PERS.72.7.771

By:

Walker, Jeffrey P.;
Willgoose, Garry R.

Publication type:

Article

On the importance of soil moisture in calibration of rainfall-runoff models: two case studies.

Published in:

Hydrological Sciences Journal/Journal des Sciences Hydrologiques, 2018, v. 63, n. 9, p. 1292, doi. 10.1080/02626667.2018.1487560

By:

Shahrban, Mahshid;
Walker, Jeffrey P.;
Wang, Q. J.;
Robertson, David E.

Publication type:

Article

An evaluation of numerical weather prediction based rainfall forecasts.

Published in:

Hydrological Sciences Journal/Journal des Sciences Hydrologiques, 2016, v. 61, n. 15, p. 2704, doi. 10.1080/02626667.2016.1170131

By:

Shahrban, Mahshid;
Walker, Jeffrey P.;
Wang, Q. J.;
Seed, Alan;
Steinle, Peter

Publication type:

Article

Evaluation of the OhmMapper Instrument for Soil Moisture Measurement.

Published in:

Soil Science Society of America Journal, 2002, v. 66, n. 3, p. 728, doi. 10.2136/sssaj2002.7280

By:

Walker, Jeffrey P.;
Houser, Paul R.

Publication type:

Article

Wildfire Smoke Particulate Matter Concentration Measurements Using Radio Links From Cellular Communication Networks.

Published in:

AGU Advances, 2021, v. 2, n. 1, p. 1, doi. 10.1029/2020AV000258

By:

Guyot, Adrien;
Pudashine, Jayaram;
Uijlenhoet, Remko;
Protat, Alain;
Pauwels, Valentijn R. N.;
Louf, Valentin;
Walker, Jeffrey P.

Publication type:

Article

Near‐real‐time one‐kilometre Soil Moisture Active Passive soil moisture data product.

Published in:

Hydrological Processes, 2020, v. 34, n. 21, p. 4083, doi. 10.1002/hyp.13857

By:

Yin, Jifu;
Zhan, Xiwu;
Liu, Jicheng;
Moradkhani, Hamid;
Fang, Li;
Walker, Jeffrey P.

Publication type:

Article