Laurence Smith
Laurence Smith  Email | Website
University of California, Los Angeles
Calibration and Validation
Project
U.S.-Canada Collaboration to Build SWOT Calibration/Validation and Science Capacity in Northern Rivers and Wetlands
Co-Investigators
Colin Gleason, Alain Pietroniro
Recent SWOT-related Publications | See All
AirSWOT Measurements of River Water Surface Elevation and Slope: Tanana River, AK (2017)
An Intercomparison of Remote Sensing River Discharge Estimation Algorithms from Measurements of River Height, Width, and Slope (2016)
Technical Note: Semi-automated Effective Width Extraction from Time-lapse RGB Imagery of a Remote, Braided Greenlandic River (2015)
Retrieval of River Discharge Solely from Satellite Imagery and At-Many-Stations Hydraulic Geometry: Sensitivity to River Form and Optimization Parameters (2014)

Meeting Presentations (20)

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Recent AirSWOT Results for Lakes and Wetlands [presentation]
Pitcher, L., Smith, L., Pavelsky, T., Moller, D., Gleason, C., Fayne, J., Cooley, S., Humphries-Altenau, E., and Allen, G. (27-Jun-18)
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Preliminary Ka-band returns from 2017 NASA ABoVE AirSWOT Flight Campaigns [presentation]
Smith, L., Fayne, J., and Kyzivat, E. (27-Jun-18)
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2017 AirSWOT Flights and SWOT Cal/Val Activities [presentation]
Smith, L., Gleason, C., Pietroniro, A., Pavelsky, T. and Minear, T. (29-Jun-17)
Poster
A New US-Canada Collaboration to Build SWOT Calibration/Validation and Science Capacity for Northern Rivers and Wetlands [poster]
Smith, L.C., Pietroniro, A., and Gleason, C.J. (13-Dec-16). We present a new U.S.-Canada partnership to establish new SWOT calibration/validation sites, collect unique "SWOT-like" field and remote sensing datasets, conduct phenomenology studies of potentially important impacts (vegetation, sedimentary deposits, ice, and wind) on SWOT backscatter and water surface elevation retrievals; and to gain scientific knowledge of the impact of permafrost on the form, hydraulics, and water surface elevations of northern rivers and lakes.
Poster
Including Stage-dependent Roughness Coefficient in Algorithms to Estimate River Discharge from Remotely Sensed Water Elevation, Width, and Slope [poster]
Durand, M.T., Gleason, C.J., Bjerklie, D.M., Garambois, P-A., Smith, L.C., Roux, H., Rodriguez, E., and Tuozzolo, S. (13-Dec-16). We present a dataset of model-derived effective roughness coefficient timeseries, and power-law type models for how the roughness coefficient varies with flow and with stage, for ten rivers. We then provide side-by-side comparisons of discharge algorithm performance including and omitting the variable roughness coefficient. We explore empirical and physically-based methods of approximating the parameters in the roughness coefficient model. Finally, we characterize the expected discharge accuracy from these approaches in various types of rivers.
Poster
Novel AirSWOT Measurements of River Height and Slope, Tanana River, AK [poster]
Altenau, E.H., Pavelsky, T., Moller, D., Lion, C., Pitcher, L.H., Allen, G.H., Bates, P.D., Calmant, S., Durand, M.T., and Smith, L.C. (13-Dec-16). The Surface Water and Ocean Topography (SWOT) satellite mission aims to increase our knowledge of the global water cycle by providing 2D measurements of terrestrial and ocean water surface elevations (WSE). For the first time, SWOT will provide high accuracy heights and slopes of rivers 100 m wide and greater for the majority of the globe. Here, we present new measurements of river height and slope from AirSWOT, the SWOT mission's airborne analog.
Poster
Preliminary Results from the 2015 AirSWOT Campaign: Tanana River, Alaska [poster]
Altenau, E., Pavelsky, T., Lion, C., Pitcher, L., Allen, G., Bates, P., Butman, D., Calmant, S., Durand, M., Moller, D., and Smith, L. (14-Jun-16)
Poster
U.S.-Canada Collaboration to Build SWOT Calibration/Validation and Science Capacity for Northern Rivers and Wetlands [poster]
Smith, L., Pietroniro, A., and Gleason, C. (14-Jun-16)
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Scientific Objectives for the 1-day in Hydrology [presentation]
Smith, L., and Pavelsky, T. (09-Jul-15)
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Piute Ponds, Edwards AFB: The World’s Most Convenient AirSWOT Calibration/Validation Site [presentation]
Smith, L. (08-Jul-15)
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Discharge Algorithm Working Group Update [presentation]
Roux, H., Durand, M., Gleason, C., Garambois, P-A., Bjerklie, D., and Smith, L. (07-Jul-15)
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Systematic High-Resolution Inventory of Global Lakes using Landsat Archive: A Progress Report [presentation]
Sheng, Y., Wang, J., Song, C., Smith, L., Lyons, E., Te, G., Garibay, D., and Woods, J. (15-Jan-15)
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Digital Elevation Models (DEMs) and SWOT [presentation]
Pavelsky, T., Esteban-Fernandez, D., Rodriguez, E., Andreadis, K., Biancamaria, S., Cretaux, J-F., Durand, M., Fjørtoft, R., Lettenmaier, D., and Smith, L. (14-Jan-15)
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Expected Capability on Phenomenology Issues [presentation]
Smith, L. and Yesou, H. (15-Jan-14)
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SWOT River Discharge Retrieval [presentation]
Smith, L. (28-Jan-13)
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Addressing SWOT Validation and Science in Complex Arctic Systems [presentation]
Pavelsky, T., Moller, D., Smith, L., and Rodriguez, E. (17-Oct-11)
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Potential Hydrologic Science Contributions for an Airborne SWOT Simulator [presentation]
Smith, L. (02-Mar-10)
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Satellite Observation of Regional-scale Lake Dynamics: A Progress Report [presentation]
Sheng, Y., Li, J., Smith, L., Shah, C., and Lyons E. (16-Sep-08)
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SWOT Measurements of Northern Hydrology [presentation]
Smith, L. (15-Sep-08)
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Arctic Hydrology and Climate Change [presentation]
Smith, L. (30-Oct-06)

Publications (10)

Altenau, E.H., Pavelsky, T.M, Moller, D., Lion, C., Pitcher, L.H., Allen, G., Bates, P.D., Calmant, S., Durand, M., and Smith, L.C. (2017). AirSWOT Measurements of River Water Surface Elevation and Slope: Tanana River, AK, Geophys. Res. Lett., 44(1), 181-189, doi: 10.1002/2016GL071577.
Durand, M., Gleason, C.J., Garambois, P.A., Bjerklie, D., Smith, L.C., Roux, H., Rodriguez, E., Bates, P.D., Pavelsky, T.M., Monnier, J., Chen, X., Di Baldassarre, G., Fiset, J-M., Flipo, N., Frasson, R.P.D., Fulton, J., Goutal, H., Hossain, F., Humphries, E., Minear, J.T., Mukolwe, M.M., Neal, J.C., Ricci, S., Sanders, B.F., Schumann, G., Schubert, J.E., and Vimlin, L. (2016). An Intercomparison of Remote Sensing River Discharge Estimation Algorithms from Measurements of River Height, Width, and Slope, Water Resour. Res., 52, 4527-4549, doi: 10.1002/2015WR018434.
Gleason, C.J., Smith, L.C., Finnegan, D.C., Lewinter, A.L., Pitcher, L.H., and Chu, V.W. (2015). Technical Note: Semi-automated Effective Width Extraction from Time-lapse RGB Imagery of a Remote, Braided Greenlandic River, Hydrol. Earth Syst. Sci., 19, 2963-2969, doi: 10.5194/hess-19-2963-2015.
Gleason, C.J., Smith, L.C, and Lee, J. (2014). Retrieval of River Discharge Solely from Satellite Imagery and At-Many-Stations Hydraulic Geometry: Sensitivity to River Form and Optimization Parameters, Water Resour. Res., 50(12), 9604-9619, doi: 10.1002/2014WR016109.
Gleason, C.J. and Smith, L.C. (2014). Toward Global Mapping of River Discharge Using Satellite Images and At-many-stations Hydraulic Geometry, Proc. Nat. Acad. Sci. USA, 111(13), 4788-4791, doi: 10.1073/pnas.1317606111.
Durand, M., Neal, J., Rodríguez, E., Andreadis, K.M., Smith, L.C., and Yoon, Y. (2014). Estimating Reach-averaged Discharge for the River Severn from Measurements of River Water Surface Elevation and Slope, J. Hydrol., 511, 92-104, doi: 10.1016/j.jhydrol.2013.12.050.
Mersel, M.K., Smith, L.C., Andreadis, K.M., Durand, M.T. (2013). Estimation of River Depth from Remotely Sensed Hydraulic Relationships, Water Resour. Res., 49, 3165-3179, doi: 10.1002/wrcr.20176.
Smith, L.C. and Pavelsky, T.M. (2009). Remote Sensing of Volumetric Storage Changes in Lakes, Earth Surf. Process. Landforms, 34, 1353-1358. doi: 10.1002/esp.1822.
Smith, L.C. and Pavelsky, T.M. (2008). Estimation of River Discharge, Propagation Speed, and Hydraulic Geometry from Space: Lena River, Siberia, Water Resour. Res., 44, W03427, doi: 10.1029/2007WR006133.
Pavelsky, T.M. and Smith, L.C. (2008). RivWidth: A Software Tool for the Calculation of River Widths from Remotely Sensed Imagery, IEEE Geosci. Remote Sens. Lett., 5(1), 70-73, doi: 10.1109/LGRS.2007.908305.

Documents (1)

U.S.-Canada Collaboration to Build SWOT Calibration/Validation and Science Capacity for Northern Rivers and Wetlands
PI: Laurence Smith (14-Jun-17). The objective of this SWOT Science Team project is to aid pre-launch preparations and scientific development for the surface water hydrology component of the NASA/CNES/CSA Surface Water and Ocean Topography (SWOT) mission.