Sciences and Exploration Directorate

Karl F Huemmrich


Karl F Huemmrich's Contact Card & Information.
Phone: 301.614.6663
Org Code: 618
Mail Code 618
Greenbelt, MD 20771

Brief Bio

Dr. Huemmrich has developed and used models of light interactions with vegetation, and has studied the use of remotely sensed data to collect information on biophysical variables and land cover type using both computer models and field measurements. He is familiar with bi-directional and hyperspectral data and their uses in determining biophysical characteristics. He has been involved in the analysis of remotely sensed data from a variety of platforms, including data collected from surface, aircraft, and satellite instruments.
He has experience in collecting data on biophysical variables in the field, with direct experience with both broad band and hyperspectral radiometers to determine vegetation canopy spectral reflectance, measured leaf level reflectance and transmittance using an integration sphere, measured light transmittance of vegetation canopies and their leaf area index. He has performed fieldwork on the use of remote sensing in a variety of habitats, including the tundra, desert, shrubland, tall grass prairie, agricultural fields, boreal forest, temperate rain forest, and temperate deciduous forest. Dr. Huemmrich was involved in the operations and data analysis for the Boreal Ecosystem and Atmosphere Study (BOREAS) and the First International Satellite Land Surface Climatology Project Field Experiment (FIFE) in Kansas. He was the assistant Information Scientist on these experiments, in particular working directly with the archival of the flux tower data, and has experience in the development and operation of interdisciplinary information systems in support of large field experiments.

Teaching Experience

‘Arctic Geography.’ Geography and Environmental Sciences Department, University of Maryland Baltimore County, Spring 2007, 2009, 2011, and Fall 2012.
‘Seminar on Ecophysiology and Plant Distribution,’ Geography and Environmental Sciences Department, University of Maryland Baltimore County, Spring 2002.
‘Advanced Remote Sensing,’ Geography Department, University of Maryland College Park, Spring 2000 and 2001.


Ph.D., Geography, May 1995
University of Maryland, College Park, MD 20741.

B.S., Physics, May 1978
Carnegie-Mellon University, Pittsburgh, PA 15213-3980.

Selected Publications


2013. "Arctic Tundra Vegetation Functional Types Based on Photosynthetic Physiology and Optical Properties." IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 6 (2): 265-275 [10.1109/JSTARS.2013.2253446] [Journal Article/Letter]

2013. "Integrating Solar Induced Fluorescence and the Photochemical Reflectance Index for Estimating Gross Primary Production in a Cornfield." Remote Sensing 5 (12): 6857-6879 [10.3390/rs5126857] [Journal Article/Letter]

2013. "Spatial and temporal variation in primary productivity (NDVI) of coastal Alaskan tundra: Decreased vegetation growth following earlier snowmelt." Remote Sensing of Environment 129 144–153 [10.1016/j.rse.2012.10.030] [Journal Article/Letter]

2013. "Selection of Hyperspectral Narrowbands (HNBs) and Composition of Hyperspectral Twoband Vegetation Indices (HVIs) for Biophysical Characterization and Discrimination of Crop Types Using Field Reflectance and Hyperion/EO-1 Data." IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing 6 (2): 427-439 [10.1109/JSTARS.2013.2252601] [Journal Article/Letter]

2013. "Simulations of Seasonal and Latitudinal Variations in Leaf Inclination Angle Distribution: Implications for Remote Sensing." Advances in Remote Sensing 2 (2): 93-101 [10.4236/ars.2013.22013] [Journal Article/Letter]

2013. "EO-1 Hyperion Reflectance Time Series at Calibration and Validation Sites: Stability and Sensitivity to Seasonal Dynamics." IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing 6 (2): 276-290 [10.1109/JSTARS.2013.2246139] [Journal Article/Letter]

2013. "Global monitoring of terrestrial chlorophyll fluorescence from moderate-spectral-resolution near-infrared satellite measurements: methodology, simulations, and application to GOME-2." Atmos. Meas. Tech. 6 (10): 2803-2823 [10.5194/amt-6-2803-2013] [Journal Article/Letter]

2011. "Applications of the BIOPHYS algorithm for physically - based retrieval of biophysical , structural and forest disturbance information." IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 4 971-982 [10.1109/JSTARS.2011.2164899] [Journal Article/Letter]

2010. "Remote sensing of tundra gross ecosystem productivity and light use efficiency under varying temperature and moisture conditions." Remote Sensing of Environment 114 (3): 481-489 [Journal Article/Letter]

2010. "Tundra carbon balance under varying temperature and moisture regimes." Journal of Geophysical Research-Biogeosciences 115 [Journal Article/Letter]

2009. "Linking foliage spectral responses to canopy-level ecosystem photosynthetic light-use efficiency at a Douglas-fir forest in Canada." Canadian J Remote Sens 35 (2): 166-188 [ISSN 1712-7971] [Journal Article/Letter]

2008. "Regional mapping of gross light-use efficiency using MODIS spectral indices." Remote Sens Environ 112 (6): 3064-3078 [Journal Article/Letter]

2008. "A modeling approach for upscaling gross ecosystem production to the landscape scale using remote sensing data." J. Geophys. Res. 113 (G3): 10.1029/2007JG000666 [10.1029/2007JG000666] [Journal Article/Letter]

2008. "Multi-angle remote sensing of forest light use efficiency by observing PRI variation with canopy shadow fraction." Remote Sensing of Environment 112 (7): 3201-3211 [10.1016/j.rse.2008.03.015] [Journal Article/Letter]

2006. "A Landsat Surface Reflectance Dataset for North America, 1990–2000." IEEE Geosci. Remote Sensing Lett. 3 (1): 68-72 [10.1109/LGRS.2005.857030] [Journal Article/Letter]

2005. "A MODIS-derived photochemical reflectance index to detect inter-annual variations in the photosynthetic light-use efficiency of a boreal deciduous forest." Remote Sens Environ 98 (2-3): 212-224 [10.1016/j.rse.2005.07.006] [Journal Article/Letter]

2005. "Time-series validation of MODIS land biophysical products in a Kalahari woodland, Africa." Int J Remote Sens 26 (10): 4381-4398 [Journal Article/Letter]

2004. "Remote sensing in BOREAS: Lessons learned." Remote Sens Environ 89 139-162 [Journal Article/Letter]

2001. "The GeoSail model: a simple addition to the SAIL model to describe discontinuous canopy reflectance." emote Sensing of Environment 75 423-431 [Journal Article/Letter]


2009. "Hyperspectral-LIDAR system and data product integration for terrestrial applications." SPIE Optics Photonics, Optical Engineering plus Applications, Imaging Spectrometry [Journal Article/Letter]

2009. "Remote Sensing techniques to monitor Nitrogen driven Carbon dynamics in vegetation." SPIE Optics Photonics, Optical Engineering plus Applications, Remote Sensing and Modeling of Ecosystems for Sustainability [Journal Article/Letter]

2008. "Comparisons between in Situ Anisotropic Reflectance Measurements and Simulations for Vegetation Canopies: Validation and Sensitivity Analysis." IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium 3 III-790 - III-792 [10.1109/IGARSS.2008.4779467] [Other]

2008. "Impact of Spectral Resolution on Solar Induced Fluorescence and Reflectance Indices for Monitoring Vegetation." IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium 4 1387 - 1390 [10.1109/IGARSS.2008.4779991] [Proceedings]