2010-2013: PhD
Environmental Engineering, Princeton University
Advisor: Dr. Eric F. Wood

2008-2010: Master of Art
Environmental Engineering, Princeton University
Advisor: Dr. Eric F. Wood

2004-2008: Bachelor of Science
Geography, Geoinformatics, Nanjing University
(with honor, GPA rank: 1/156)

Professional Experience:
2016-Present: Assistant Professor (NRES)
Blue Waters Professor (NCSA)
Affiliated Professor (CEE, Crop Sciences)
University of Illinois at Urbana Champaign

2015-2016: Quantitative Researcher
The Climate Corporation

2013-2015: Postdoc Scholar
Earth System Science, Stanford University
Supervisor: Dr. David Lobell, Dr. Joe Berry

Selected Academic Awards:

2016, NASA New Investigator Award, NASA

2016, Blue Waters Professorship, National Center for Supercomputing Applications, UIUC

2012, NASA Earth and Space Science Fellowship (NESSF), NASA

2012, Walbridge Fund Graduate Award, Princeton Environmental Institute, Princeton University

2012, Best Student Paper Award, Phenology 2012 Conference, Milwaukee, Wisconsin

2010, CUAHSI Pathfinnder Fellowship, Consortium of Universities for the Advancement of Hydrologic Science, Inc. (CUAHSI)

2007, National Undergraduate Scholarship (within 1%), Ministry of Education, China

2006, Pan Xueping Scholarship (within 1%), Nanjing University, China

2007, Best Student Paper Award (2nd), 15th International Conference on Geoinformatics, Nanjing, China

Email: kaiyuguan AT gmail DOT com;
              kaiyug AT illinois DOT edu.

Mail address:
Department of Natural Resources and Environmental Sciences
University of Illinois at Urbana-Champaign
W503, Turner Hall, 1102 S. Goodwin
Urbana, Illinois 61801

Visitor Locations:

Last updated on July 27, 2017 by Kaiyu Guan
All rights reserved.
Kaiyu Guan (管开宇)
University of Illinois at Urbana Champaign 

I  am
an Assistant Professor in ecohydrology and geoinformatics in the Department of Natural Resources and Environmental Sciences at the University of Illinois at Urbana-Champaign, with a joint appointment as a Blue Waters professor affiliated with the National Center for Supercomputing Applications (NCSA). I have plans to recruit highly motivated graduate students and postdocs with full supports in the coming years in the area of "crop remote sensing and modeling". Please contact me with your CV and research ideas. 

I use satellite data, computational models, field work, and machine learning approaches to address how climate and human practices affect crop productivity, water resource availability, and ecosystem functioning. I have keen interests in applying my knowledge and skills in solving real-life problems, such as large-scale crop monitoring and forecasting, water management and sustainability, and global food security.

Before I joined UIUC, I was a post-doctoral scholar working with
Prof. David Lobell in the Center of the Food Security and the Environment and Department of Environmental Earth System Science, Stanford University. My postdoc research was to study climate change impacts and adaptations on crop production and food security in West African and US. Specifically, I used empirical and process-based approaches to model drought and heat stress effects on staple crop production and assess possible adaptation pathways. I also worked with Dr. Joe Berry on using satellite-based photosynthesis measurements (sun-induced chlorophyll fluorescence) to quantify crop productivity.

I got my PhD from Princeton University in the summer of 2013, and I worked with Prof. Eric F. Wood in the Land Surface Hydrology Research Group. I also closely worked with Prof. Kelly K. Caylor and Prof. David Medvigy.  My PhD research focused on understanding how hydrological variability impact vegetation dynamics (vegetation phenology, ecosystem productivity, and biome distributions) in the African continent using multiple remote sensing datasets and ecosystem/land surface models (e.g. SEIB and VIC). 

Research Interests:
Ecohydrology, Terrestrial Remote Sensing Applications (optical/thermal/microwave), Crop Modeling and Forecasting, Agriculture Adaptation to Climate Change, Vegetation Dynamic Modeling, Biogeography, Drought, Vegetation Phenology, Tropical Ecology

Peer-Reviewed Publications: (Google Scholar)

(* indicates corresponding authorship, bold italics underline indicates postdocs or graduate students in Guan’s lab.)

In Review
[38] Peng, B.*, Guan, K.*, Chen, M., Lawrence, D., Pokhrel, Y., Suyker, A., … Lu, Y. (In Review). "Improving Maize Growth Processes in the Community Land Model: Implementation and Evaluation".

[37] Cai, Y., Guan, K.*, Peng, J.*, Wang, S., Seifert, C., Wardlow, B., and Li, Z. (In Review). "A high-performance and in-season classification system of field-level crop types using time-series Landsat data and deep learning approach".

[36] Li, Y.*, Guan, K.* et al. (In Review) "Estimating global ecosystem iso/anisohydry using active and passive microwave satellite data". 

Guan, K.*, Li, Z., Rao, N., Feng, G, etc (In Review) "Using MODIS-Landsat fused data and ALOS-2/PARSAR-2 to map paddy rice and estimate crop yield for Thai Binh Province in Viet Nam". 

[34] Zhao, Y.*, Guan, K.*, Shukla, S., Chen, M., and Davis, S. J. (In Review) "Changes in cropping patterns during California drought: a case study of Kern county".

[33] Liu, Y.Y. et al. (including Guan, K.) (In Review) "Enhanced canopy growth procedes biomass reduction during Amazonian droughts".

Published, In Press, and Accepted
[32] Peng, B., Zhao, T., Shi, J., Lu H., Mialon A., Kerr, Y.H., Liang, X., and Guan, K. (In Press) "Reappraisal of the roughness effect parameterization schemes for L-band radiometry over bare soil", Remote Sensing of Environment.

Guan, K.*, Wu, J., Kimball, J., Anderson, M., Li, B., and Lobell, D (In Press) "The shared and unique values of optical, fluorescence, thermal and microwave satellite data for estimating large-scale crop yields", Remote Sensing of Environment.

[30] Ahlstrom, A., Canadell, J.G., Schurgers, G., Wu, M., Berry, J.A., Guan, K., and Jackson, R.B. (In Press) "Hydrologic resilience and Amazon productivity", Nature Communications.

[29] Madani, N., Kimball, J., Jones, L., Parazoo, N. C. and Guan, K. (2017) "Global analysis of bioclimatic controls on ecosystem productivity using satellite observations of solar-induced chlorophyll fluorescence", Remote Sensing, 9(6), 530. 

Wu, J., Guan, K., Hayek, M. et al. (2017) "Partitioning controls on Amazon forest photosynthesis between environmental and biotic factors at hourly to inter-annual time scales", Global Change Biology, 23(3), 1240-1257.

[27] Guan, K.*, Sultan, B., M., Biasutti, M., Baron. C. and Lobell, D.B. (2017) "Assessing climate adaptation options and uncertainties for cereal systems in West Africa", Agricultural and Forest Meteorology, 232, 291-305.
Media: U. of I.

[26] Zhan, W., Guan, K., Wood, E. F. et al (2016) "Depiction of droughts over Sub-Saharan Africa using reanalysis precipitation datasets", Journal of Geophysical Research-Atmospheres, 121(18), 10555-10574.

[25] He, M., Kimball, J.S., Running, S, Ballantyne, A., Guan, K., and Heummrich, F. (2016) "Satellite detection of soil moisture related impacts on ecosystem productivity using the MODIS-based Photochemical Reflectance Index", Remote Sensing of Environment, 186, 173-183.

[24] Wagner F.H. et al. (including Guan, K.) (2016) "Climate seasonality limits carbon assimilation and storage in tropical forests", Biogeosciences, 13, 2537-2562.

[23] Alden, C.B., Miller, J.B., Gatti, L. V., Gloor, M. M., Guan, K., ..., and Diffenbaugh, N. S. (2016) "Regional atmospheric CO2 inversion reveals seasonal and geographic differences in heat and drought impacts in the Amazon", Global Change Biology.
Media: CIRES, Stanford News

[22] Xu, X., Medvigy, D., Powers, J., Becknell, J., and Guan, K. (2016) "Diversity in plant hydraulic traits explains seasonal and inter-annual variations of vegetation dynamics in seasonally dry tropical forests", New Phytologist.
Comments: New Phytologist

[21] Wu, J., Chavana-Bryant, C., Prohaska, N., Serbin, S.P., Guan, K., Albert, L.P., Yang, X. ... and Saleska, S. R. (2016) "Convergence in relations among leaf traits, spectra and age across canopy environments and two contrasting tropical forests", New Phytologist.

[20] Saleska, S.R., Wu, J., Guan, K., Nobre, A.D. and Restrepo-Coupe, N.
(2016) "Dry-season greening of Amazon forests", Nature.
Media: U. Arizona; UTS; ScienceDaily.

[19] Wu, J., Albert, L.P., Lopes. A. P., Restrepo-Coupe N., Hayek, M. Wiedemann., K. T., Guan, K., Stark, S. C., ..., and Saleska., S. R. (2016) "Leaf development and demography explain photosynthetic seasonality in Amazon evergreen forests", Science, 351 (6276).
Media: Science; U. of Arizona; BNL; NSF.

Guan, K.*, Lobell, D.B., Berry, J.,  Joiner, J., Guanter, L., Zhang, Y., and Badgley, G. (2016) "Improving the mointoring of crop productivity using spaceborne solar-induced fluorescence", Global Change Biology, 22(2).
Media: Stanford News; Youtube

[17] Good, S.P., Guan, K., and Caylor, K.K. (2016) “Global patterns of the contributions of storm frequency, intensity, and seasonality to inter-annual variability of precipitation", Journal of Climate, 29, 3-15.

[16] Bahn, M., Reichstein, M., Guan, K., Moreno, J.M., Williams, C. (2015) "Climate extremes and biogeochemical cycles in the terrestrial biosphere: impacts and feedbacks across scales", Biogeosciences, 12, 4827-4830.

[15] Guan, K., Sultan, B., M., Biasutti, M., Lobell, D.B. (2015)What aspects of future rainfall changes matter for crop yields in West Africa”, Geophysical Research Letters, 42(19).

[14] Shukla, S., Safeeq, M., AghaKouchak, A., Guan, K., and Funk, C. (2015) “Temperature impacts on the Water Year 2014 Drought in California”, Geophysical Research Letters.
Media: UCSB Current;; CIRC

[13] Guan, K.*, Pan, M., Li, H., Wolf, A., Wu, J., Medvigy, D., Caylor, K. K., Sheffield J., Wood, E.F., Malhi, Y., Liang, M., Kimball, J. S., Saleska, S., Berry, J., Joiner, J., and Lyapustin, A. I. (2015) "Photosynthetic seasonality of global tropical forests constrained by hydroclimate", Nature Geoscience.
Media: Water forms common thread in diverse rainforest ecosystems (; Princeton University).

[12] Sultan, B.*,
Guan, K.*, Kouressy, M., Biasutti, M., Piani, C., Hammer, G.L., Mclean, G., and Lobell, D.B. (2014) "Robust features of future climate change impacts on sorghum yields in West Africa", Environmental Research Letters, 9(10).
Media:  Climate change could cut West African sorghum yields by a fifth.

[11] Guan, K.*, Caylor, K. K., Good, S.P., Biasutti, M., Medvigy, D., Pan, M., Wood, E. F. and SATO, H. (2014) "Continental-scale impacts of intra-seasonal rainfall variability on simulated ecosystem responses in Africa", Biogeosciences, 11, 6939-6954.

[10] Reid, M.C, Guan, K., Fabian Wagner, Mauzerall, D.L. (2014) "Global Methane Emission from Pit Latrines", Environmental Science and Technology, 48,8727-8734.

Media: Pit latrines: another source of greenhouse gas emissions.

Guan, K.*, Wood, E. F., Caylor, K. K., Medvigy, D., Sheffield, J., Pan, M., Kimball, J., Xu, X and Jones, M.O. (2014) "Terrestrial hydrological control on vegetation phenology of African savannas and woodlands", Journal of Geophysical Research-Biogeosciences, 119(8), 8727-8734.

[8] Good, S.P., Soderberg, K., Guan, K., King, E. G., Scanlon, T., Caylor, K.K. (2014) "δ2H Isotopic flux partitioning of evapotranspiration over a grass field following a water pulse and subsequent dry down", Water Resources Research, 50(2), 1410-1432.

[7] Sheffield, J., Wood, E. F., Chaney, N., Guan, K., Safri, S., Yuan, X., Olang, L., Amani, A., Ali, A., and Demuth, S. (2014), "A drought monitoring and forecarsting system for Sub-Sahara African water resources and food security", Bulletin of the American Meteorological Society, 95(6), 2014.
African drought monitor; Media: UNESCO.

[6] Yuan, X., Wood, E. F., Chaney, N. W., Sheffield J., Kam, J., Liang, M., and Guan, K. (2014), "Probalistic Seasonal Forecasting of African Drought by Dynamical Models", Journal of Hydrometeorology, 14, 1706-1720.

[5] Guan, K.*, Medvigy, D., Wood, E. F. , Caylor, K. K. ,Li, S. and Jeong S.J. (2014) "Deriving vegetation phenological time and trajectory information over Africa using SEVIRI daily LAI", IEEE transactions on Geoscience and Remote Sensing, 53(2),1113-1130.

[4] Guan, K.*, Wolf, A., Wood, E. F., Medvigy, D., Caylor, K. K. and Pan, M. (2013) "Seasonal coupling of canopy function and structure in African tropical forests and its environmental controls", Ecosphere, 4(3).

[3] Guan, K.*, Wood, E. F. and Caylor, K. K. (2012) "Multi-sensor derivation of regional vegetation fractional cover in Africa", Remote Sensing of Environment, 124, 653-665.

[2] Guan, K., Thompson, S.E.*, Harman, C. J., Basu, N. B., Rao, S. P., Sivapalan, M., Kalita, P.K. and Packman, A. I. (2011) "Spatio-temporal scaling of hydrological and agro-chemical export dynamics in a tile-drained Midwestern watershed", Water Resource Research, 47, W00J02.
Media: "Agricultural chemical export dynamics in a watershed", EOS, 92(25), 21 June 2011.

[1] Li, X., Zhao, S., Ke, C. and Guan, K. (2007) "The Study of Methods of Quantitative Evaluation on Remotely Sensed Image Fusion (in Chinese)", Remote Sensing Technology and Application, 22(3).

Other Publications:
[3] Guan, K.*, Caylor, K. K., Good, S.P., Medvigy, D., Pan, M., Wood, E. F., SATO, H. and Li, H. (In Review) "Impacts of rainfall frequency, intensity and seasonality on terrestrial ecosystem productivity in Africa".

Guan, K. (2013) "PhD dissertation: Hydrological variability on vegetation seasonality, productivity and composition in tropical ecosystems of Africa", Princeton University.

[1] Soderberg, K., Good, S. P., Guan., K. and King, E.G. (2011) "Ecohydrology: also know as growing grass", Mpala Memos, April 2011 issue, Mpala Research Centre and Wildlife Foundation, Laikipia, Kenya.    

Professional Memberships:
American Geophysical Union (AGU) (2009-present)
European Geophysical Union (EGU) (2014-present)
American Meteorological Society (AMS) (2012-present)
Ecological Society of America (ESA) (2015-present)

Academic Services:
Manuscript reviewer: Science (1); Proceedings of National Academy of Science (2); Nature Geoscience (1); Global Change Biology (2); Remote Sensing of Environment (1); Journal of Geophysical Research-Biogeosciences (1); Global Ecology and Biogeography (2); Journal of Biogeography (1); Agricultural and Forest Meteorology (3); Biogeoscience (3); Water Resources Research (2); Journal of Hydrology (2); Hydrology and Earth System Sciences (5); New Phytologist (1); PLOS one (1); Journal of Arid Environments (1); Land (1); Journal of Hydrometeorology (1); International Journal of Biometeorology (1); Advances in Space Research (1); Geoinformatics & Geostatistics (1); Remote Sensing (3); IEEE Geoscience and Remote Sensing Letters (1); Journal of Selected Topics in Applied Earth Observations and Remote Sensing (1); Environmental Research Letters (2); International Journal of Climatology (1); Global Biochemcial Cycles (1).

Proposal reviewer:
NASA Ecological Forecasting Review Panel (2013); NSF Geography and Spatial Sciences (2013);Netherlands Space Office (2015, 2017); NSF Food-Energy-Water Nexus Program (2 times, 2015); USDA SBIR Panel (2017); NSF CPS (2017).

Editor: [1] Guest editor for Special Issue: “Climate extremes and biogeochemical cycles in the terrestrial biosphere: impacts and feedbacks across scale” in Biogeosciences.
[2] Guest editor for Special Issue: “Ecophysiological Remote Sensing” in Remote Sensing.

Synergistic Activities:
[1] Session chair, Climate Change: Agriculture, Water Resources and Ecological Responses, Annual Meeting of the Association of American Geographers, New York, Feb 2012.
[2] Convener (with Stephen Good, Kelly Caylor and Youngryle Ryu), B005. Beyond changes in mean climate: the impacts of climate variability on terrestrial ecosystems, AGU Fall Meeting, Dec 2013. 
[3] Convener (with Alyssa Whitecraft, Debara Peters, and David Lobell), B44. Advances in Earth Observations for regional to global agricultural monitoring: GEOGLAM and other activities, AGU Fall Meeting, Dec 2015. 
[4] Convener (with Jin Wu, Scott Saleska, and Xi Yang), B051. Climatic controls on vegetation dynamics in tropical forests, AGU Fall Meeting, Dec 2015. <script>
[5] Convener (with Yongguang Zhang, Joanna Joiner, and Xi Yang), Chlorophyll fluorescence as a proxy of photosynthesis: from field to satellite measurements, modeling and applications, AGU Fall Meeting, Dec 2016. <s  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
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