Symposia, L. Johnson

 

as of Apr 2014

Johnson, L., F. Cassel-Sharma, D. Goorahoo, and F. Melton, 2014. Calculator for water sustainability metrics in California Agriculture, ASCE-EWRI Congress, 1-5 June, Portland.

Melton, Johnson, et al., 2014. Satellite mapping of agricultural water requirements in California, ASABE Evapotranspiration Conference, 7-11 April, Raleigh.

Johnson, L., M. Cahn, F. Martin, F. Melton, C. Lund, B. Farrara, and S. Benzen, 2014. Results from 2012-13 irrigation trials in cool season vegetables. USCID Water Management Conference, 4-7 March, Sacramento.

Johnson L., C. Rosevelt, and F. Melton, 2014. Fallowed area mapping for drought impact reporting and decision making. Calif. Drought Outlook Forum, 20-Feb, Sacramento. Johnson, L., 2014. ET-based irrigation scheduling of lettuce and broccoli. Irrigation and Nutrient Management Meeting, UC Cooperative Extension, 12-Feb, Salinas.

Johnson, L., C. Lund, and F. Melton, 2013. Comparison of satellite-based basal and adjusted evapotranspiration for several California crops. AGU Fall Meeting, 9-13 Dec., San Francisco.

Johnson, L., M. Cahn, F. Melton, F. Martin, C. Lund, S. Benzen, B. Farrara, 2013. New tools for ET estimation and irrigation management in specialty crops, ASABE Annual Meeting, Kansas City

Melton, F., L. Johnson et al., 2013. Satellite Mapping of Agricultural Water Requirements in California, ASPRS Annual Conference, 24-28 March, Baltimore.

Johnson, L., M. Cahn, F. Martin, C. Lund and F. Melton, 2012. Irrigation trials for ET estimation and water management in California specialty crops. AGU Fall Meeting, 3-7 Dec., San Francisco.

Melton, F., L. Johnson, et al., 2012. Satellite Mapping of Agricultural Water Requirements in California with the Terrestrial Observation and Prediction System. AGU Fall Meeting, 3-7 Dec., San Francisco

Trout T., F. Melton, and L. Johnson, 2012. Using Satellite Imagery with ET Weather Station Networks to Map Crop Water Use for Irrigation Scheduling: TOPS-SIMS, ASA International Annual Meeting, 21-24 October, Cincinnati.

Melton, F., C. Lund, L. Johnson et al., 2012. An Operational Framework for Satellite Irrigation Management Support with the Terrestrial Observation and Prediction System, AGU Chapman Conference on Remote Sensing of the Terrestrial Water Cycle, 19-22 Feb., Kona, HI.

Johnson, L., 2011. Crop evapotranspiration in San Joaquin Valley by Landsat reflectance-based and energy-balance estimation methods. AGU Fall Meeting, 5-9 Dec., San Francisco.

Melton, F., L. Johnson, et al., 2011. Satellite irrigation monitoring and management support in California with the Terrestrial Observation and Prediction System. AGU Fall Meeting, 5-9 Dec., San Francisco.

Hiatt, S. et al., 2011. Web services for satellite irrigation monitoring and management support. AGU Fall Meeting, 5-9 Dec., San Francisco.

Purdy, A. et al., 2011. Applications of wireless sensor networks, soil water balance modeling, and satellite data for crop evapotranspiration monitoring and irrigation management support. AGU Fall Meeting, 5-9 Dec., San Francisco.

Melton, F., L. Johnson, et al., 2011. Satellite indicators of vegetation condition, crop canopy development, and agricultural water use in California. Sustainable Water Resources Roundtable, Advisory Committee on Water Information, 6-7 Dec., UC Davis.

Johnson, L., F. Melton, A. Michaelis, L. Pierce, C. Lund, T. Trout, D. Wang and R. Nemani, 2011. Satellite irrigation management support with the Terrestrial Observation and Prediction System. Proc. ASPRS 18th William T. Pecora Memorial Remote Sensing Symposium, 14-17 Nov., Washington DC

Melton, F., L. Johnson et al., 2011. Integrating satellite and surface observations for crop evapotranspiration mapping and irrigation management support in California, Western States ET Workshop, 12-13 Oct., Boise.

Melton, F., L. Johnson, et al., 2011. Integration of satellite and surface observation networks for estimation of agricultural water use in the California Irrigation Management Information System. Border-Area Water Management Remote Sensing Workshop, 8-9 June, San Diego.

Melton, F., L. Johnson et al., 2011. Crop irrigation monitoring and management support in California with the Terrestrial Observations and Prediction System. ASCE World Environmental & Water Resources Congress, 22-26 May, Palm Springs.

Johnson, L., T. Trout, D. Wang, and F. Melton, 2011. Satellite mapping of crop water demand in California. Assoc. Amer. Geog. Annual Meeting, 12-16 April, Seattle.

Melton, F., L. Johnson, et al., 2011. Satellite irrigation management support with the Terrestrial Observation and Prediction System, NASA Applied Sciences Evapotranspiration Workshop, 5-7 April, Washington, D.C.

Johnson, L. and T. Trout, 2011. Satellite mapping of irrigation demand in the San Joaquin Valley, CalGIS Agriculture & Natural Resources Symposium, 28-31 March, Fresno.

Johnson, L., T. Trout, D. Wang, and F. Melton, 2010. Landsat-based monitoring of crop water demand in the San Joaquin Valley. AGU Fall Meeting, 13-17 Dec., San Francisco.

Johnson, L., R. Nemani, F. Melton, A. Michaelis, P. Votava, T. Trout, D. Wang, and T. Trout, 2010. Information technology supports integration of satellite imagery with irrigation management in Californias Central Valley. ASABE 5th National Irrigation Conference, 5-8 Dec., Phoenix.

Trout, T., B. Sanden, L, Johnson, D. Wang, and B. Clark, 2010. Comparison of Two Remote Sensing Approaches for ET estimation in the San Joaquin Valley. ASABE 5th National Irrigation Conference, Dec 5-8, Phoenix.

Trout, T., L. Johnson, and D. Wang, 2010. Predicting crop water use from ground cover and remote sensing. 28th Int'l. Horticultural Congress, 22-27 Aug., Lisbon.

Lehmuth, S., P. Agrawal, D. Fisher, A. Nguyen, K. Roberts, A. Strawa, L. Johnson, and J. Skiles, 2010. Comparison of Deep Blue and land surface reflectance in the San Joaquin Valley. ASPRS Annual Conference, 26-30 Apr., San Diego.

Johnson, L., 2010. Remote sensing of crop phenology in the California Delta. Assoc. Amer. Geographers Annual Meeting. 14-18 April, Washington D.C.

Melton, F., R. Nemani, L. Johnson, E. Sheffner, A. Michaelis, P. Votava, S. Hiatt, H. Hashimoto, C. Milesi, and W. Wang, 2009. Application of the NASA Terrestrial Observation and Prediction System for Optimization of Agricultural Water Use in California, AGU Fall Meeting, 14-18 Dec., San Francisco.

Lehmuth, S., P. Agrawal, D. Fisher, A. Nguyen, K. Roberts, A. Strawa, L. Johnson, and J. Skiles, 2010. Comparison of Deep Blue and land surface reflectance in the San Joaquin Valley. AGU Fall Meeting, 14-18 Dec., San Francisco.

Wang, D., T. Trout, L. Johnson, and J. Gartung, 2009. Satellite-based near real-time assessment of water requirement of California crops. ASA-CSSA-SSSA Annual Meeting, 1-5 Nov, Pittsburgh.

Trout, T., L. Johnson, and D. Wang, 2009. Use of satellite imagery to determine fractional ground cover for estimation of crop water use. ASCE World Environmental & Water Resources Congress, 17-21 May, Kansas City.

Dunagan, S., B. Baldauf, P. Finch, L. Guild, B., Jaroux, L. Johnson, B. Lobitz, J. Ryan, 2009. Small satellite and UAS assets for coral reef and algal bloom monitoring. 33rd Int'l Symp. Rem. Sens. Environ., 4-8 May, Italy.

Johnson, L., 2009. Airborne mapping of shaded area in a winegrape vineyard. Assoc. Amer. Geographers Annual Meeting. 22-27 March, Las Vegas.

Johnson, L., S. Dunagan, and B. Lobitz, 2008. UAS for threat detection on pipeline rights-of-way. ASPRS Pecora-17 Symposium: The Future of Land Imaging, 17-20 November, Denver.

Bubenheim, D., C. Potter, R. Carruthers, L. Johnson, 2008. Linking remote sensing and ecosystem modeling for management of invasive species in the western United States, 37th COSPAR Scientific Assembly, 13-20 July, Montreal.

Carruthers, R., S. Swope, D. Bubenheim, C. Potter, M. Kramer, and L. Johnson, 2008. The use of remote sensing and computer modeling as aids in management of invasive plant species in the western United States. IGARSS, July 6-11, Boston.

Trout, T. and L. Johnson, 2007. Estimating crop water use from remotely sensed NDVI, crop growth models, and ground based reference ET, 4th Int'l. Conference on Irrigation & Drainage, 30-Sept to 4-Oct, Sacramento.

Johnson, L., 2007. Remote sensing support for ARS and NGWI priorities. USDA/ARS Grape & Wine Industry Workshop, 24-25 July, Kennewick, Wash.

Johnson, L., T. Trout, J. Gartung, and J. Hornbuckle, 2007. Satellite mapping of horticultural crop cover in California's San Joaquin Valley: strategy for irrigation water resource management. Assoc. Amer. Geographers, 17-21 April, San Francisco.

Johnson, L., 2007. Mapping vineyard water balance. Geospatial Technologies in Agriculture Symposium, 4-5 April, Oakland, Calif.

Johnson, L., L. Pierce, A. Michaelis, T. Scholasch, and R. Nemani, 2006. Remote sensing and water balance modeling in California drip-irrigated vineyards. Amer. Soc. Civil Engin., World Environmental & Water Resources Congress, 21-25 May, Omaha, NE

Johnson, L., 2006. Block scale remote sensing applications in Napa Valley. Oregon Wine Industry Symposium, 27-28 February, Eugene, Oregon

Johnson, L., 2006. Remote sensing and irrigation scheduling. California Irrigation Institute, 22th Annual Mtg, 26-27 January, Sacramento

Furfaro, R., D. Ganapol, L. Johnson, and S. Herwitz, 2005. Model-based neural network algorithm for coffee ripeness prediction using Helios UAV aerial images. SPIE 11th International Symposium on Remote Sensing, 19-22 September, Bruges, Belgium.

Bubenheim, D., R. Carruthers, C. Potter, M. Kramer, and L. Johnson 2005. Decision support for western weed management. NASA-USDA Workshop on Earth Science Applications and Decision Support. 12-14 April, New Orleans (poster)

Carruthers, R., D. Spencer, D. Bubenheim, C. Potter, M. Kramer, and L. Johnson, 2005. Decision support for western weed management. NASA Ecological Modeling Workshop, 30-31 March, Monterey (poster)

Johnson, L., L. Pierce, A. Michaelis, P. Votava, and R. Nemani, 2005. Ecological forecasting techniques applied to winegrape vineyards. Assoc. American Geographers, 4-8 April, Denver

Johnson, L., 2005. Remote sensing & agronomic decision-making. CalGIS XI Conference, 16-18 March, Bakersfield.

Johnson, L., 2004. Remote sensing: A tool for precision agriculture. Precision Agriculture for the 21st Century. Santiago, Chile, 3 September 2004.

Johnson, L., 2004. Vineyard remote sensing - practice and potential. Amer. Soc. Enology & Viticulture, Annual Meeting, 29 June-2 July, San Diego.

Herwitz, S., K. Allmendinger, R. Slye, S. Dunagan, B. Lobitz, L. Johnson, and J. Brass, 2004. Nighttime UAV vineyard mission - challenges of see-and-avoid in the National Airspace. AIAA 3rd UAV Technical Conference. 20-22 September, Chicago.

Furfaro, R., B. Ganapol, L. Johnson, and S. Herwitz, 2003. Leaf-canopy inversion model through a neural network algorithm: application to coffee cherry estimation using UAV images. AGU Fall Meeting, 8-11 December, San Francisco, CA.

Guild, L., B. Ganapol, P. Kramer, R. Armstrong, A. Gleason, J. Torres, L. Johnson and T. Garfield, 2003. Clues to coral reef ecosystem health: spectral analysis coupled with radiative transfer modeling. Eos Trans. AGU 84(46), Fall Meeting supplement, Abstract OS22D-08. AGU Fall Meeting, 8-11 December, San Francisco, CA.

Johnson, L., S. Dunagan, B. Lobitz, D. Sullivan, R. Slye, and S. Herwitz, 2003. Collection of ultra high spatial and spectral resolution image data over California vineyards with a small UAV, Int'l Symp. Rem. Sens. Environ., 10-14 Nov., Honolulu, HI.

Johnson, L., L. Pierce, J. DeMartino, S. Youkhana, R. Nemani, and D. Bosch, 2003. Image-based decision tools for vineyard management, Amer. Soc. Agric. Engineers Int'l Meeting, 27-30 July, Las Vegas, NV.

Herwitz, S., L. Johnson, et al., 2003. Solar-powered UAV mission for agricultural decision support, IEEE International Geoscience and Remote Sensing Symposium, 21-25 July, Toulouse, France.

Herwitz, S., L. Johnson, et al., 2003. Coffee field ripeness detection using high resolution imaging systems of a solar-powered UAV, 30th ISPRS Symposium, 10-14 November, Honolulu, HI.

Herwitz, S., L. Johnson, and G. Witt, 2003. Orchestrating a near-real-time imaging mission in national airspace using a solar-powered UAV, 2nd AIAA UAV Conference (Unmanned Unlimited), 15-18 September, San Diego, CA.

Furfaro,R., B. Ganapol, L. Johnson, S. Herwitz, 2003. Leaf-canopy inversion model through a neural network algorithm: application to coffee cherry estimation using UAV images, 8-11 December, San Francisco, CA.

Guild, L., B. Ganapol, P. Kramer, R. Armstrong, A. Gleason, J. Torres, L. Johnson and T. Garfield, 2002. Clues to Coral Reef Health: Integrating Radiative Transfer Modeling and Hyperspectral Data, American Geophysical Union, 6-10 December, San Francisco, CA

Herwitz, S., L. Johnson, J. Arvesen, J. Leung, and S. Dunagan, 2002. Precision Agriculture as a Commercial Application for Solar-powered UAVs, 1st AIAA UAV Conference 20-23 May, Portsmouth, VA.

Guild, L., T. Garfield, B. Ganapol, L. Johnson, R. Armstrong, and P. Kramer, 2002. Clues to coral reef health: spatial and spectral remote sensing detail. 7thInt'l Conf. on Remote Sensing for Marine and Coastal Environments, 20-22 May, Miami, FL.

Johnson, L., D. Roczen and S. Youkhana, 2001. Vineyard Canopy Density Mapping with IKONOS Satellite Imagery, Third Int'l Conf. Geospatial Information in Agriculture and Forestry, Denver CO, November 5-7.

Johnson, L., R. Nemani, L. Pierce, M. Bobo and D. Bosch, 2000. Toward the improved use of remote sensing and process modeling in California's premium wine industry, Proceedings IEEE International Geoscience and Remote Sensing Symposium, vol. 1, pp. 363-365, Honolulu HI, 24-28 July.

Hammer, P., L. Johnson, A. Strawa, et al., 2000. Surface reflectance mapping using interferometric spectral imagery from a remotely piloted aircraft, Proceedings IEEE International Geoscience and Remote Sensing Symposium, vol. 2, pp. 816-818, Honolulu HI, 24-28 July.

Johnson, L. and D. Bubenheim, 2000. Investigation of nitrogen limitation in lettuce with a hydroponic system, Proceedings Geoinformatics 2000, Monterey CA, (abstract).

Peterson, D. and L. Johnson, 2000. GRAPES: from science to commercial application, Proceedings, Geoinformatics 2000, pp. 132-138, Monterey CA, 21-23 June.

Johnson, L., V. Vanderbilt, J. Paris, V. Ambrosia, D. Bubenheim, G. Schlick, R. Woodruff, 2000. Spectral identification of nitrogen stress in lettuce. Proceedings , Second Int'l. Conference Geospatial Information in Agriculture & Forestry, 2:105, 10-12 January, Lake Buena Vista FL (abstract).

Johnson, L., C. Hlavka, B. Ganapol, 1999. Prediction of leaf and canopy reflectance with the LCM2 radiative transfer model. Eos, Transactions, American Geophysical Union, vol. 80, no. 46, p. F62, 16 November, Supplement. Conference: 13-17 December, San Francisco CA (abstract).

Ganapol, B., L. Johnson and C. Hlavka, 1999. A coupled leaf/canopy nested radiative transfer model. Proceedings,. American Nuclear Society Topical Meeting on Mathematics and Computation in Reactor Physics and Environmental Analysis, September 1999, Madrid Spain.

Gualtieri, J., S. Chettri, R. Cromp and L. Johnson, 1999. Support vector machine classifiers as applied to AVIRIS data. Proceedings, Eighth JPL Airborne Geoscience Workshop, 8-11 February, Pasadena CA

Lobitz, B., L. Johnson, K. Mountford, and P. Stokely, 1998. AVIRIS analysis of water quality in the Chesapeake Bay. Proceedings Fifth Int'l Conference Remote Sensing for Marine and Coastal Environments, vol. 1, pg. 450, 5-7 October, San Diego CA.

Johnson, L., B. Lobitz, D. Bosch, D. Williams, S. Wiechers, and P. Skinner, 1998. Of pixels and palates: can geospatial technology help produce a better wine? Proceedings, First Int'l. Conference Geospatial Information in Agriculture & Forestry, vol.2, pp. 469-476, 1-3 June, Lake Buena Vista FL.

Johnson, L., P. Hammer, S. Dunagan, D. Peterson, and W. Smith, 1998. Overview of DASI high spectral resolution remote sensing in Hawaii. Proceedings, First Int'l. Conference Geospatial Information in Agriculture & Forestry, vol. 1, p. 314, 1-3 June, Lake Buena Vista FL.

Johnson, L., P. Stokely, B. Lobitz, and G. Shelton, 1998. Joint NASA/EPA AVIRIS analysis in the Chesapeake bay region: plans and initial results. Proceedings, Seventh JPL Airborne Geoscience Workshop, JPL Publication 97-21, p. 223.

Ganapol, B., L. Johnson, P. Hammer, C. Hlavka, and D. Peterson, 1997. Leaf absorption profiles via radiative transfer model inversion. Proceedings, Mathematics & Computations Topical Meeting, American Nuclear Society, Saratoga NY, October 1997. (invited paper)

Lobitz, B., L. Johnson, C. Hlavka, and D. Bosch, 1996. Monitoring phylloxera infestation with airborne digital imagery. Proceedings, Second Int'l Airborne Remote Sensing Conference and Exhibition, San Francisco CA, 24-27 June, 3:397 (pub: Environmental Research Institute of Michigan, Ann Arbor MI).

Hammer, P.D., W. Smith, S. Dunagan, L. Johnson, A. Strawa, D. Peterson, J. Zott, and G. Langford, 1996. Airborne hyperspectral imagery using DASI - an imaging interferometer. Proceedings, Second Int'l Airborne Remote Sensing Conference and Exhibition, San Francisco CA, 24-27 June, 2:283-289 (pub: Environmental Research Institute of Michigan, Ann Arbor MI).

Hammer, P.D., D. Peterson, W. Smith, S. Dunagan, L. Johnson, A. Strawa, J. Zott, and G. Langford, 1996. Remote sensing with hyperspectral imagery using DASI - an imaging interferometer. Proceedings, International Geoscience and Remote Sensing Symposium (IGARSS '96), 4:2276-2278, Lincoln NE, 27-31 May.

Johnson, L.F., J. DeBenedictis, E. Weber, R. Baldy, B. Osborne, B. Lobitz, C. Hlavka, and D. Bosch, 1995. Examination of grapevine canopy and leaf reflectance for detection and monitoring of phylloxera-related damage to vineyards. Technical Abstracts, 46th Annual Meeting of the American Society for Enology and Viticulture, p. 25, 22-24 June 1995, Portland OR.

Ganapol, B.D., L. Johnson, and D. Peterson, 1995. Development of a within-leaf radiative transfer model: preliminary results. Proceedings, International Geoscience and Remote Sensing Symposium (IGARSS '95), 2:1457-1459, Florence Italy, 10-14 July.

Johnson, L.F. and D.L. Peterson, 1994. Estimation of forest canopy leaf area index using directional ASAS measurements, Proceedings, International Geoscience and Remote Sensing Symposium (IGARSS '94), 4:1819-1822, Pasadena CA.

Johnson, L.F. and D.L. Peterson, 1992. Multiple view-angle observations of forest canopy along the Oregon Transect, Program and Abstracts, 77th Annual Meeting Ecological Society of America, Supplement to Bulletin of the Ecological Society of America, 73:224-225, Honolulu HI.

Johnson, L.F., F. Baret, and D.L. Peterson, 1992. Oregon Transect: comparison of leaf-level reflectance with canopy-level and modelled reflectance, Proceedings, Third JPL Airborne Geoscience Workshop, JPL Publication 92-14, pp. 113-115, Pasadena CA.

Johnson, L.F., 1991. Use of the AVIRIS imaging spectrometer for remote estimation of biochemical content along the Oregon Transect, Abstracts, 10th Int'lSymposium on Environmental Biogeochemistry, p. 19, San Francisco CA.

Johnson, L.F. and D.L. Peterson, 1991. AVIRIS observation of forest ecosystems along the Oregon Transect, Proceedings, Second JPL Airborne Geoscience Workshop, JPL Publication 91-28, pp. 190-199, Pasadena CA.

Johnson, L.F. and D.L. Peterson, 1991. Hyperspectral data analysis for estimation of foliar biochemical content along the Oregon Transect, Program Abstracts, 4th Interagency Airborne Geoscience Workshop, pp. 185-186, La Jolla CA.

Walthall, C.L., J.R. Irons, P.W. Dabney, D.L. Peterson, D.L. Williams, L.F. Johnson, and K.J. Ranson, 1991. Advanced Solid-State Array Spectrometer (ASAS) data sets from the 1990 field season, Program Abstracts, 4th Interagency Airborne Geoscience Workshop, pp. 287-288, La Jolla CA.

Johnson, L.F., N.A. Bryant, A.J. Brazel, C.F. Hutchinson, and R.C. Balling, 1989. Using remotely sensed data to monitor land surface climatology variations in a semi-arid grassland, Proceedings, IEEE International Geoscience & Remote Sensing Symposium (IGARSS ‘89), 1:184-187, Vancouver B.C.

Johnson, L.F., L.R. Beck, N.A. Bryant, and A.J. Brazel, 1989. Exploring differential heat flux in the Sonoran Desert with integrated aircraft, field, and satellite data, Program Abstracts, 3rd Interagency Airborne Geoscience Workshop, p. IV-63, La Jolla CA.

McGuffie, B.A., L.F. Johnson, and H.R. Lang, 1988. An interactive geologic interpretation system, Proceedings, GIS/LIS '88 Conference, 1:181-189, San Antonio TX.

Johnson, L.F., R.K. Fretz, T.L. Logan, and N.A. Bryant, 1987. An automated system for terrain database construction, Proceedings, American Congress of Surveying and Mapping Symposium, 4:167-176, Baltimore MD.

 

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