19972020

Research output per year

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Research Output

2018

High resolution soil moisture product based on SMAP active-passive approach using copernicus sentinel 1 data

Das, N. N., Entekhabi, D., Kim, S., Jagdhuber, T., Dunbar, S., Yueh, S., O’Neill, P. E., Colliander, A., Walker, J. & Jackson, T. J., 31 Oct 2018, 2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings. IEEE, Institute of Electrical and Electronics Engineers, p. 3768-3770 3 p. 8518932. (International Geoscience and Remote Sensing Symposium (IGARSS); vol. 2018-July).

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

24 Citations (Scopus)
4 Citations (Scopus)

Impact of rain gauge quality control and interpolation on streamflow simulation: An application to the warwick catchment, Australia

Liu, S., Li, Y., Pauwels, V. R. N. & Walker, J. P., 15 Jan 2018, In : Frontiers in Earth Science. 5, 13 p., 114.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File

Investigation of SMAP Active-Passive Downscaling Algorithms Using Combined Sentinel-1 SAR and SMAP Radiometer Data

He, L., Hong, Y., Wu, X., Ye, N., Walker, J. P. & Chen, X., 1 Aug 2018, In : IEEE Transactions on Geoscience and Remote Sensing. 56, 8, p. 4906-4918 13 p.

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

L-, C- and X-band passive microwave soil moisture retrieval algorithm parameterization using in situ validation sites

Gao, Y., Colliander, A., Burgin, M. S., Walker, J. P., Chae, C., Dinnat, E., Cosh, M. H., Caldwell, T., Berg, A. & Martínez-Fernández, J., 31 Oct 2018, 2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings. IEEE, Institute of Electrical and Electronics Engineers, p. 1434-1437 4 p. 8519001. (International Geoscience and Remote Sensing Symposium (IGARSS); vol. 2018-July).

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

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

Shahrban, M., Walker, J. P., Wang, Q. J. & Robertson, D. E., 4 Jul 2018, In : Hydrological Sciences Journal. 63, 9, p. 1292-1312 21 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
1 Citation (Scopus)

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

Shokri, A., Walker, J. P., van Dijk, A. I. J. M. & Pauwels, V. R. N., 1 Nov 2018, In : Water Resources Research. 54, 11, p. 8931-8951 21 p.

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Preliminary end-to-end results of the MIR instrument: the microwave interferometric reflectometer

Onrubia, R., Pascual, D., Querol, J., Park, H., Camps, A., Rüdiger, C. & Walker, J. P., 31 Oct 2018, 2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings. IEEE, Institute of Electrical and Electronics Engineers, p. 2027-2030 4 p. 8518714. (International Geoscience and Remote Sensing Symposium (IGARSS); vol. 2018-July).

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

1 Citation (Scopus)

Sentinel-1 & Sentinel-2 for soil moisture retrieval at field scale

Mattia, F., Balenzano, A., Satalino, G., Lovergine, F., Peng, J., Wegmuller, U., Cartus, O., Davidson, M. W. J., Kim, S., Johnson, J., Walker, J., Wu, X., Pauwels, V. R. N., McNairn, H., Caldwell, T., Cosh, M. & Jackson, T., 31 Oct 2018, 2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings. IEEE, Institute of Electrical and Electronics Engineers, p. 6143-6146 4 p. 8518170. (International Geoscience and Remote Sensing Symposium (IGARSS); vol. 2018-July).

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

5 Citations (Scopus)

SMOS and SMAP brightness temperature assimilation over the Murrumbidgee basin

Rains, D., De Lannoy, G. J. M., Lievens, H., Walker, J. P. & Verhoest, N. E. C., 1 Nov 2018, In : IEEE Geoscience and Remote Sensing Letters. 15, 11, p. 1652-1656 5 p., 8424465.

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Soil moisture retrieval over agricultural fields from time series multi-angular L-band radar data

Zhu, L., Walker, J. P., Tsang, L., Huang, H., Ye, N. & Rüdiger, C., 31 Oct 2018, 2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings. IEEE, Institute of Electrical and Electronics Engineers, p. 6139-6142 4 p. 8518119. (International Geoscience and Remote Sensing Symposium (IGARSS); vol. 2018-July).

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

1 Citation (Scopus)

Spatially enhanced passive microwave derived soil moisture: capabilities and opportunities

Sabaghy, S., Walker, J. P., Renzullo, L. J. & Jackson, T. J., 1 May 2018, In : Remote Sensing of Environment. 209, p. 551-580 30 p.

Research output: Contribution to journalReview ArticleResearchpeer-review

28 Citations (Scopus)

Surface rock effects on soil moisture retrieval from L-band passive microwave observations

Ye, N., Walker, J. P., Rüdiger, C., Ryu, D. & Gurney, R. J., 15 Sep 2018, In : Remote Sensing of Environment. 215, p. 33-43 11 p.

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

The polarimetric L-band imaging synthetic aperture radar (PLIS): description, calibration, and cross-validation

Zhu, L., Walker, J. P., Ye, N., Rudiger, C., Hacker, J. M., Panciera, R., Tanase, M. A., Wu, X., Gray, D. A., Stacy, N., Goh, A., Yardley, H. & Mead, J., Nov 2018, In : IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 11, 11, p. 4513-4525 13 p.

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

The SMAP mission combined active-passive soil moisture product at 9 km and 3 km spatial resolutions

Das, N. N., Entekhabi, D., Dunbar, R. S., Colliander, A., Chen, F., Crow, W., Jackson, T. J., Berg, A., Bosch, D. D., Caldwell, T., Cosh, M. H., Collins, C. H., Lopez-Baeza, E., Moghaddam, M., Rowlandson, T., Starks, P. J., Thibeault, M., Walker, J. P., Wu, X., O'Neill, P. E. & 2 others, Yueh, S. & Njoku, E. G., 15 Jun 2018, In : Remote Sensing of Environment. 211, p. 204-217 14 p.

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)

Towards multi-frequency soil moisture retrieval using P- and L-band passive microwave sensing technology

Ye, N., Wu, X., Walker, J., Boopathi, N., Jackson, T. J., Kerr, Y., Kim, E., McGrath, A., Yeo, I. Y. & Moghaddam, M., 31 Oct 2018, 2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings. IEEE, Institute of Electrical and Electronics Engineers, p. 3707-3710 4 p. 8519266. (International Geoscience and Remote Sensing Symposium (IGARSS); vol. 2018-July).

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

3 Citations (Scopus)

Towards operational SAR-based flood mapping using neuro-fuzzy texture-based approaches

Dasgupta, A., Grimaldi, S., Ramsankaran, R. A. A. J., Pauwels, V. R. N. & Walker, J. P., 15 Sep 2018, In : Remote Sensing of Environment. 215, p. 313-329 17 p.

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)

Towards soil moisture retrieval using tower-based P-band radiometer observations

Boopathi, N., Ye, N., Wu, X., Walker, J. P., Rao, Y. S., Jackson, T. J., Kerr, Y., Kim, E., McGrath, A. & Yeo, I. Y., 31 Oct 2018, 2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings. IEEE, Institute of Electrical and Electronics Engineers, p. 1407-1410 4 p. 8518979. (International Geoscience and Remote Sensing Symposium (IGARSS); vol. 2018-July).

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

3 Citations (Scopus)
2019

A multi-frequency framework for soil moisture retrieval from time series radar data

Zhu, L., Walker, J. P., Tsang, L., Huang, H., Ye, N. & Rüdiger, C., 15 Dec 2019, In : Remote Sensing of Environment. 235, 15 p., 111433.

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

An in-situ data based model to downscale radiometric satellite soil moisture products in the Upper Hunter Region of NSW, Australia

Senanayake, I. P., Yeo, I. Y., Tangdamrongsub, N., Willgoose, G. R., Hancock, G. R., Wells, T., Fang, B., Lakshmi, V. & Walker, J. P., 1 May 2019, In : Journal of Hydrology. 572, p. 820-838 19 p.

Research output: Contribution to journalArticleResearchpeer-review

7 Citations (Scopus)

Challenges, opportunities, and pitfalls for global coupled hydrologic-hydraulic modeling of floods

Grimaldi, S., Schumann, G. J. P., Shokri, A., Walker, J. P. & Pauwels, V. R. N., Jul 2019, In : Water Resources Research. 55, 7, p. 5277-5300 24 p.

Research output: Contribution to journalArticleResearchpeer-review

5 Citations (Scopus)

Effect of disdrometer type on rain drop size distribution characterisation: a new dataset for south-eastern Australia

Guyot, A., Pudashine, J., Protat, A., Uijlenhoet, R., Pauwels, V. R. N., Seed, A. & Walker, J. P., 19 Nov 2019, In : Hydrology and Earth System Sciences. 23, 11, p. 4737-4761 25 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
3 Citations (Scopus)

Evaluating model results in scatter plots: a critique

Pauwels, V. R. N., Guyot, A. & Walker, J. P., 1 Nov 2019, In : Ecological Modelling. 411, 6 p., 108802.

Research output: Contribution to journalLetterOtherpeer-review

Evaluation of SMAP downscaled brightness temperature using SMAPEx-4/5 airborne observations

Ye, N., Walker, J. P., Bindlish, R., Chaubell, J., Das, N. N., Gevaert, A. I., Jackson, T. J. & Rüdiger, C., 1 Feb 2019, In : Remote Sensing of Environment. 221, p. 363-372 10 p.

Research output: Contribution to journalArticleResearchpeer-review

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

Tian, S., Renzullo, L. J., Van Dijk, A. I. J. M., Tregoning, P. & Walker, J. P., 21 Feb 2019, In : Hydrology and Earth System Sciences. 23, 2, p. 1067-1081 15 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
7 Citations (Scopus)

Ground-based remote sensing of soil moisture using lower frequency microwave radiometers

Boopathi, N., Ye, N., Wu, X., Walker, J. P., Rao, Y. S., Jackson, T. J., Kerr, Y., Kim, E., McGrath, A. & Yeo, I. Y., 1 Mar 2019, 2019 URSI Asia-Pacific Radio Science Conference, AP-RASC 2019. IEEE, Institute of Electrical and Electronics Engineers, 8738311. (2019 URSI Asia-Pacific Radio Science Conference, AP-RASC 2019).

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Impact of urban cover fraction on SMOS and SMAP surface soil moisture retrieval accuracy

Ye, N., Walker, J. P., Rudiger, C., Ryu, D. & Gurney, R. J., Sep 2019, In : IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 12, 9, p. 3338-3350 13 p.

Research output: Contribution to journalArticleResearchpeer-review

Impact of window size in remote sensing based glacier feature tracking - a study on Chhota Shigri Glacier, Western Himalayas, India

Kumari, S., Ramsankaran, RAAJ. & Walker, J. P., 2019, IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium - Proceedings. IEEE, Institute of Electrical and Electronics Engineers, p. 4175-4178 4 p. 8899325

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

On the use of adaptive ensemble Kalman filtering to mitigate error misspecifications in GRACE data assimilation

Shokri, A., Walker, J. P., van Dijk, A. I. J. M. & Pauwels, V. R. N., Sep 2019, In : Water Resources Research. 55, 9, p. 7622-7637 16 p.

Research output: Contribution to journalArticleResearchpeer-review

5 Citations (Scopus)

River reconstruction using a conformal mapping method

Hilton, J. E., Grimaldi, S., Cohen, R. C. Z., Garg, N., Li, Y., Marvanek, S., Pauwels, V. R. N. & Walker, J. P., 1 Sep 2019, In : Environmental Modelling and Software. 119, p. 197-213 17 p.

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Roughness and vegetation change detection: a pre-processing for soil moisture retrieval from multi-temporal SAR imagery

Zhu, L., Walker, J. P., Ye, N. & Rüdiger, C., 1 May 2019, In : Remote Sensing of Environment. 225, p. 93-106 14 p.

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Satellite cross-talk impact analysis in airborne interferometric global navigation satellite system-reflectometry with the microwave interferometric reflectometer

Onrubia, R., Pascual, D., Park, H., Camps, A., Rüdiger, C., Walker, J. P. & Monerris, A., 10 May 2019, In : Remote Sensing. 11, 9, 11 p., 1120.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
3 Citations (Scopus)

Seasonal dependence of SMAP radiometer-based soil moisture performance as observed over core validation sites

Colliander, A., Jackson, T. J., Chan, S. K., O'Neill, P., Bindlish, R., Cosh, M. H., Caldwell, T., Walker, J. P., Berg, A., McNairn, H., Thibeault, M., Martinez-Fernandez, J., Jensen, K. H., Asanuma, J., Seyfried, M. S., Bosch, D. D., Starks, P. J., Holifield Collins, C., Prueger, J. H., Su, Z. & 1 others, Yueh, S. H., 2019, IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium. IEEE, Institute of Electrical and Electronics Engineers, p. 5320-5323 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Soil moisture retrieval from time series multi-angular radar data using a dry down constraint

Zhu, L., Walker, J. P., Tsang, L., Huang, H., Ye, N. & Rüdiger, C., 15 Sep 2019, In : Remote Sensing of Environment. 231, 12 p., 111237.

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

The SMAP and Copernicus Sentinel 1A/B microwave active-passive high resolution surface soil moisture product

Das, N. N., Entekhabi, D., Dunbar, R. S., Chaubell, M. J., Colliander, A., Yueh, S., Jagdhuber, T., Chen, F., Crow, W., O'Neill, P. E., Walker, J. P., Berg, A., Bosch, D. D., Caldwell, T., Cosh, M. H., Collins, C. H., Lopez-Baeza, E. & Thibeault, M., 1 Nov 2019, In : Remote Sensing of Environment. 233, 17 p., 111380.

Research output: Contribution to journalArticleResearchpeer-review

9 Citations (Scopus)

Uncertainty of reference pixel soil moisture averages sampled at SMAP core validation sites

Chen, F., Crow, W. T., Cosh, M. H., Colliander, A., Asanuma, J., Berg, A., Bosch, D. D., Caldwell, T. G., Collins, C. H., Jensen, K. H., Martínez-Fernández, J., McNairn, H., Starks, P. J., Su, Z. & Walker, J. P., Aug 2019, In : Journal of Hydrometeorology. 20, 8, p. 1553-1569 17 p.

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Version 4 of the SMAP Level-4 Soil Moisture algorithm and data product

Reichle, R. H., Liu, Q., Koster, R. D., Crow, W. T., De Lannoy, G. J. M., Kimball, J. S., Ardizzone, J. V., Bosch, D., Colliander, A., Cosh, M., Kolassa, J., Mahanama, S. P., Prueger, J., Starks, P. & Walker, J. P., Oct 2019, In : Journal of Advances in Modeling Earth Systems. 11, 10, p. 3106-3130 25 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
4 Citations (Scopus)

Water balance and tree water use dynamics in remnant urban reserves

Marchionni, V., Guyot, A., Tapper, N., Walker, J. P. & Daly, E., 1 Aug 2019, In : Journal of Hydrology. 575, p. 343-353 11 p.

Research output: Contribution to journalArticleResearchpeer-review

2 Citations (Scopus)
2020

Carbon, water and energy fluxes in agricultural systems of Australia and New Zealand

Cleverly, J., Vote, C., Isaac, P., Ewenz, C., Harahap, M., Beringer, J., Campbell, D. I., Daly, E., Eamus, D., He, L., Hunt, J., Grace, P., Hutley, L. B., Laubach, J., McCaskill, M., Rowlings, D., Rutledge Jonker, S., Schipper, L. A., Schroder, I., Teodosio, B. & 5 others, Yu, Q., Ward, P. R., Walker, J. P., Webb, J. A. & Grover, S. P. P., 15 Jun 2020, In : Agricultural and Forest Meteorology. 287, 16 p., 107934.

Research output: Contribution to journalArticleResearchpeer-review

Comprehensive analysis of alternative downscaled soil moisture products

Sabaghy, S., Walker, J. P., Renzullo, L. J., Akbar, R., Chan, S., Chaubell, J., Das, N., Dunbar, R. S., Entekhabi, D., Gevaert, A., Jackson, T. J., Loew, A., Merlin, O., Moghaddam, M., Peng, J., Peng, J., Piepmeier, J., Rüdiger, C., Stefan, V., Wu, X. & 2 others, Ye, N. & Yueh, S., 15 Mar 2020, In : Remote Sensing of Environment. 239, 23 p., 111586.

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Drone-based sensing for leaf area index estimation of citrus canopy

Raj, R., Suradhaniwar, S., Nandan, R., Jagarlapudi, A. & Walker, J., 2020, Lecture Notes in Civil Engineering. Springer, p. 79-89 11 p. (Lecture Notes in Civil Engineering; vol. 51).

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Effect of rainfall events on SMAP radiometer-based soil moisture accuracy using core validation sites

Colliander, A., Jackson, T. J., Berg, A., Bosch, D. D., Caldwell, T., Chan, S., Cosh, M. H., Collins, C. H., Martínez-Fernández, J., McNairn, H., Prueger, J. H., Starks, P. J., Walker, J. P. & Yueh, S. H., Feb 2020, In : Journal of Hydrometeorology. 21, 2, p. 255-264 10 p.

Research output: Contribution to journalArticleResearchpeer-review

Experimental evidence of swell signatures in Airborne L5/E5a GNSS-reflectometry

Munoz-Martin, J. F., Onrubia, R., Pascual, D., Park, H., Camps, A., Rüdiger, C., Walker, J. & Monerris, A., 1 Jun 2020, In : Remote Sensing. 12, 11, 18 p., 1759.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File

Flood mapping under vegetation using single SAR acquisitions

Grimaldi, S., Xu, J., Li, Y., Pauwels, V. R. N. & Walker, J. P., Feb 2020, In : Remote Sensing of Environment. 237, 20 p., 111582.

Research output: Contribution to journalArticleResearchpeer-review

5 Citations (Scopus)

Groundwater buffers drought effects and climate variability in urban reserves

Marchionni, V., Daly, E., Manoli, G., Tapper, N. J., Walker, J. P. & Fatichi, S., May 2020, In : Water Resources Research. 56, 5, 19 p., e2019WR026192.

Research output: Contribution to journalArticleResearchpeer-review

Impact of flooded rice paddy on remotely sensed evapotranspiration in the Krishna River basin, India

Teluguntla, P., Ryu, D., George, B. & Walker, J. P., 13 Mar 2020, (Accepted/In press) In : Hydrological Processes. 10 p.

Research output: Contribution to journalArticleResearchpeer-review

Improved SMAP dual-channel algorithm for the retrieval of soil moisture

Chaubell, M. J., Yueh, S. H., Scott Dunbar, R., Colliander, A., Chen, F., Chan, S. K., Entekhabi, D., Bindlish, R., O'Neill, P. E., Asanuma, J., Berg, A. A., Bosch, D. D., Caldwell, T., Cosh, M. H., Collins, C. H., Martinez-Fernandez, J., Seyfried, M., Starks, P. J., Su, Z., Thibeault, M. & 1 others, Walker, J., Jun 2020, In : IEEE Transactions on Geoscience and Remote Sensing. 58, 6, p. 3894-3905 12 p.

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Multivariate data assimilation of GRACE, SMOS, SMAP measurements for improved regional soil moisture and groundwater storage estimates

Tangdamrongsub, N., Han, S-C., Yeo, I-Y., Dong, J., Steele-Dunne, S. C., Willgoose, G. & Walker, J. P., Jan 2020, In : Advances in Water Resources. 135, 12 p., 103477.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
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