Juang, Jehn-Yih



  • BIOS







Juang, Jehn-Yih

Associate Professor


Office : Room 601, Department of Geography 

Email : This email address is being protected from spambots. You need JavaScript enabled to view it.

Phone : 886-2-33665837

Website :


Dr Juang received his Ph.D. degree from Nicholas School of the Environment and Earth Sciences at Duke University. His work at Duke was focused on biosphere-atmosphere interactions, hydrometeorology, micrometeorology, and the impacts of land-use change on local environment. After received his Ph.D. degree, Dr. Juang continued his work as a postdoctoral research fellow at Atmospheric Sciences Modeling Division (ASMD) operated by US EPA and NOAA. His postdoctoral research was mainly on investigating the influences of sub-grid scale land-use on the estimates of chemical deposition velocity in the meso-scale atmospheric model.

In the future, Dr Juang is planning to keep working in the fields of land-atmosphere interaction, hydrometeorology, land-use, and environmental measurement and modeling, and focus on the related topics in Taiwan and the vicinity in East Asia.

Research interests: atmosphere-surface interactions, micrometeorology and microclimatology , air pollution statistical and numerical modeling


Ph.D., Nicholas School of Environment and Earth Sciences, Duke University (2007)

M.S., Graduate Institute of Environmental Engineering, National Taiwan University (1999)

B.S., Department of Civil Engineering, National Taiwan University (1997)


Surface-atmosphere interactions

Hydrometeorology Environmental/climatic changes

Impacts of land-use change on the regional climate/environment

Environmental monitoring and modeling

Surface-atmosphere interactions

Hydrometeorology Environmental/climatic changes

Impacts of land-use change on the regional climate/environment E

nvironmental monitoring and modeling


Refereed Articles (2004年迄今):

Philipp, K, Juang J-Y., Deventer M J, & Klemm O (2017). Methane Emissions from a Subtropical Grass Marshland, Northern Taiwan. Wetlands. doi:10.1007s13157-017-0947-8. (link)

Yao M-H, Li M-H, Juang J-Y, Hsia Y-J, Lee P-H, and Shen Y (2017) Mapping reference evapotranspiration from meteorological satellite data and applications, Terrestrial, Atmospheric and Oceanic Sciences, 28 501-515. (link)

Lin K-M, Juang J-Y and Chang L-F (2016) Estimating the Bowen Ratio for Application in Air Quality Models by Integrating a Simplified Analytical Expression with Measurement Data, Journal of Applied Meteorology and Climatology, 55 1041-1048. (link)

El-Madany T S, Walk J B,·Deventer M J, Degefie D T, Chang S-C, Juang J-Y,·Griessbaum F,·Klemm O (2016) Canopy- atmosphere interactions under foggy condition - size-resolved fog droplet fluxes and their implications, Journal of Geophysical Research: Biogeosciences 121(3) 796-808. (link)

Banerjee T,·Li D, ·Juang J-Y, ·Katul G. (2015), A Spectral Budget Model for the Longitudinal Turbulent Velocity in the Stable Atmospheric Surface Layer, Journal of the Atmospheric Sciences, 73(1) 15090809203800.

Lin K-M; Juang J-Y; Chang L-F, 2015. Improving Estimation of Bowen Ratio for Application in Air Quality Models by Integrating a Simplified Analytical Expression with Measurement Data, Journal of Applied Meteorology and Climatology, under revision.

Lee S-C, Fan C-J, Wu Z-Y and Juang J-Y (2015) Investigating effect of environmental controls on dynamics of CO2 budget in a subtropical estuarial marsh wetland ecosystem, Environmental Research Letters, 10 025005.

El-Madany T S, Duarte H F, Durden D J, Paas B, Deventer M J, Juang J Y, Leclerc M Y and Klemm O (2014) Low-level jets and above-canopy drainage as causes of turbulent exchange in the nocturnal boundary layer, Biogeosciences, 11 4507-4519.

Novick K A, Oishi A C, Ward E J, Siqueira M B S, Juang J-Y and Stoy P C (2014) On the difference in the net ecosystem exchange of CO2 between deciduous and evergreen forests in the southeastern United States, Global Change Biology 21(2) 827–842

Stoy P, Lin H, Novick K, Siqueira M and Juang J-Y (2014) The Role of Vegetation on the Ecosystem Radiative Entropy Budget and Trends Along Ecological Succession, Entropy, 16 3710-3731.

El-Madany T S, Griessbaum F, Fratini G, Juang J Y, Chang S C and Klemm O (2013) Comparison of sonic anemometer performance under foggy conditions, Agricultural and Forest Meteorology, 173 63-73.

Wen T-H, Jiang J-A, Sun C-H, Juang J-Y and Lin T-S (2013) Monitoring Street-Level Spatial-Temporal Variations of Carbon Monoxide in Urban Settings Using a Wireless Sensor Network (WSN) Framework, International Journal of Environmental Research and Public Health, 10 6380-6396.

Liu J-H, Chen Y-F, Lin T-S, Chen C-P, Chen P-T, Wen T-H, Sun C-H, Juang J-Y and Jiang J-A (2012) An air quality monitoring system for urban areas based on the technology of wireless sensor networks, International Journal of Smart Sensing and Intelligent Systems, 5 191-214.

Tan Z-H, Zhang Y-P, Liang N, Hsia Y-J, Zhang Y-J, Zhou G-Y, Li Y-L, Juang J-Y, Chu H-S, Yan J-H, Yu G-R, Sun X-M, Song Q-H, Cao K-F, Schaefer D A and Liu Y-H (2012) An observational study of the carbon-sink strength of East Asian subtropical evergreen forests, Environmental Research Letters, 7 044017.

Jiang J-A, Lin T-S, Chuang C-L, Chen C-P, Sun C-H, Juang J-Y, Lin J-C and Liang W-W (2011) A QoS-Guaranteed Coverage Precedence Routing Algorithm for Wireless Sensor Networks, Sensors, 11 3418-3438.

林俊全、吳湘雲、孫志鴻、江昭凱、莊振義,2011。 水質感測網應用之研究,化工技術,224,110-122

Novick, K.; Oren, R.; Stoy, P.; Juang, J. Y.; Siqueira, M.; Katul, G. G., 2009. The relationship between reference canopy conductance and simplified hydraulic architecture, Advances in Water Resources, 32, 808-819. (SCI)

Daly, E.; Palmroth, S.; Stoy, P.; Siqueira, M.; Oishi, A. C.; Juang, J. Y.; Oren, R.; Porporato, A.; Katul, G. G., 2009. The effects of elevated atmospheric CO2 and nitrogen amendments on subsurface CO2 production and concentration dynamics in a maturing pine forest, Biogeochemistry, 94, 271-287.(SCI)

Juang, J. Y.; Katul, G. G.; Siqueira, M. B. S.; Stoy, P. C.; McCarthy, H. R., 2008. Investigating a hierarchy of Eulerian closure models for scalar transfer inside forested canopies, Boundary-Layer Meteorology, 128, 1-32. (SCI)

Detto, M.; Katul, G. G.; Siqueira, M.; Juang, J. Y.; Stoy, P., 2008. The structure of turbulence near tall forest edge: The backward facing step flow analogy revisited, Ecological Applications, 18, 1420-1435. (SCI)

Stoy, P. C.; Katul, G. G.; Siqueira, M. B. S.; Juang, J. Y., 2008. Role of vegetation in determining carbon sequestration along ecological succession in the southeastern United States, Global Change Biology, 14(6), 1409-1427. (SCI)

Juang, J. Y.; Katul, G.; Siqueira, M. B. S.; Stoy, P. C.; Novick, K. A., 2007. Separating the effects of albedo from eco-physiological changes on surface temperature along a successional chronosequence in the southeastern United States, Geophysical Research Letters, 34, L21408. (SCI)

Juang, J. Y.; G. G. Katul; A. Porporato; P. C. Stoy; M. Siqueira; M. Detto; H.-S. Kim; R. Oren, 2007. Eco-hydrological controls on summertime convective rainfall triggers, Global Change Biology, 13 (4), 887-896. (SCI)

Juang, J. Y.; A. Porporato; P. C. Stoy; M. B. S. Siqueira; O. C. A, M. Detto; H.-S. Kim; G. G. Katul, 2007. Hydrologic and atmospheric controls on Initiation of convective precipitation events, Water Resources Research, 43, W03421.(SCI)

Katul, G.; Porporato, A.; Oishi, A. C.; Kim, H. S.; Stoy, P. C.; Juang, J. Y.; Siqueira, M. B. S., 2007. On the spectrum of soil moisture in a shallow-rooted uniform pine forest: from hourly to inter-annual scales, Water Resources Research, 43, W05428.(SCI)

Stoy, P. C.; S. Palmroth; A. C. Oishi; M. B. S. Siqueira; Juang. J. Y.; K. A. Novick; E. J. Ward; G. Katul; R. Oren, 2007. Are ecosystem carbon inputs and outputs coupled at short time scales? A case study from adjacent pine and hardwood forests using impulse-response analysis, Plant, Cell, and Environment, 30(6), 700-710.(SCI)

Juang, J. Y.; Katul, G. G.; Siqueira,M. B. S.; Stoy, P. C.; Palmroth, S.; McCarthy, H. R.; Kim, H.; Oren R., 2006. Modeling nighttime ecosystem respiration from measured CO2 concentration and air temperature profiles using inverse methods, Journal of Geophysical Research-Atmospheres, 111, D08S05. (SCI)

Stoy, P.; Katul, G. G.; Siqueira, M. B. S.; Juang, J. Y.; Novick, K. A.; Uebelherr, J. M.; Oren, R., 2006. An evaluation of models for partitioning eddy covariance-measured net ecosystem exchange into photosynthesis and respiration, Agricultural and Forest Meteorology, Agricultural and Forest Meteorology, 141(1), 2-18.(SCI)

Stoy, P.; Katul, G. G.; Siqueira, M. B. S.; Juang, J. Y.; Novick, K. A.; McCarthy, H. R.; Oishi, A. C.; Uebelherr, J. M.; Kim, H. S.; Oren, R., 2006. Separating the effects of climate and vegetation on evapotranspiration along a successional chronosequence in the southeastern U.S., Global Change Biology, 12, 2115-2135.(SCI)

Siqueira, M. B. S.; Katul,G. G.; Sampson D. A.; Stoy P. C.; Juang, J.Y.; McCarthy, H. R.; Oren R., 2006. Multi-scale model inter-comparisons of CO2 and H2O exchange in a maturing southeastern U.S. pine forest, Global Change Biology, 12, 1189-1207.(SCI)

Stoy, P.; Katul G. G.; Siqueira, M. B. S.; Juang, J. Y.; McCarthy H. R.; Kim H. S.; Oishi C.; Oren R., 2005. Variability in net ecosystem exchange from hourly to inter-annual time scales at adjacent pine and hardwood forests: a wavelet analysis, Tree Physiology, 25, 887-902. (SCI)

Novick, K. A., Stoy, P. C., Katul, G. G., Ellsworth D. S., Siqueira, M. B. S., Juang, J. Y. and Oren R. (2004), Carbon dioxide and water vapor exchange in a warm temperate grassland, Oecologia, 138, 259-274.


Books & Book Chapters :

Bai Y; Juang J-Y; Kondoh A, 2011. 'Urban warming and urban heat islands in Taipei, Taiwan' in D.Sc, M. T., ed. Groundwater and Subsurface Environments: Human Impacts in Asian Coastal Cities, Japan: Springer Japan, 312.







2010 Outstanding Teaching Award (University), NTU, Taiwan

2009 Excellent Publication Research Award, NTU, Taiwan

2008 Distinguished Publication Research Award, NTU, Taiwan