J
J. T. Lee
Researcher at University of Maine
Publications - 12
Citations - 1992
J. T. Lee is an academic researcher from University of Maine. The author has contributed to research in topics: Eddy covariance & Flux. The author has an hindex of 9, co-authored 12 publications receiving 1782 citations.
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Journal ArticleDOI
Intercomparison, interpretation, and assessment of spring phenology in North America estimated from remote sensing for 1982-2006
Michael A. White,Kirsten M. de Beurs,Kamel Didan,David W. Inouye,Andrew D. Richardson,Olaf P. Jensen,John O'Keefe,G. Zhang,Ramakrishna R. Nemani,Willem J. D. van Leeuwen,Jesslyn F. Brown,Allard de Wit,Michael E. Schaepman,Xioamao Lin,Michael D. Dettinger,Amey S. Bailey,John S. Kimball,Mark D. Schwartz,Dennis D. Baldocchi,J. T. Lee,William K. Lauenroth +20 more
TL;DR: In this paper, the authors assess 10 start-of-spring (SOS) methods for North America between 1982 and 2006 and find that SOS estimates were more related to the first leaf and first flowers expanding phenological stages.
Journal ArticleDOI
Influence of spring phenology on seasonal and annual carbon balance in two contrasting New England forests
Andrew D. Richardson,David Y. Hollinger,D. Bryan Dail,J. T. Lee,J. William Munger,John O'Keefe +5 more
TL;DR: All phenological measures, including CO(2) source-sink transition dates, could be well predicted on the basis of a simple two-parameter spring warming model, indicating good potential for improving the representation of phenological transitions and their dynamic responsiveness to climate variability in land surface models.
Journal ArticleDOI
Seasonal patterns and environmental control of carbon dioxide and water vapour exchange in an ecotonal boreal forest
David Y. Hollinger,David Y. Hollinger,S.M. Goltz,Eric A. Davidson,J. T. Lee,Kevin P. Tu,H.T. Valentine +6 more
TL;DR: Carbon dioxide, water vapour, and sensible heat fluxes were measured above and within a spruce dominated forest near the southern ecotone of the boreal forest in Maine, USA as mentioned in this paper.
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CO 2 , CO, and CH 4 measurements from tall towers in the NOAA Earth System Research Laboratory's Global Greenhouse Gas Reference Network: instrumentation, uncertainty analysis, and recommendations for future high-accuracy greenhouse gas monitoring efforts
Arlyn E. Andrews,J. Kofler,J. Kofler,M. Trudeau,M. Trudeau,M. Trudeau,J. C. Williams,D. H. Neff,D. H. Neff,K. A. Masarie,D. Y. Chao,D. Y. Chao,D. R. Kitzis,D. R. Kitzis,Paul C. Novelli,C. L. Zhao,C. L. Zhao,Edward J. Dlugokencky,P. M. Lang,M. Crotwell,M. Crotwell,Marc Fischer,M. J. Parker,J. T. Lee,D. D. Baumann,Ankur R. Desai,Charles O. Stanier,S. F. J. De Wekker,Daniel E. Wolfe,J. W. Munger,Pieter P. Tans +30 more
TL;DR: In this article, a reliable and precise in situ CO2 and CO analysis system has been developed and deployed at eight sites in the NOAA Earth System Research Laboratory's (ESRL) Global Greenhouse Gas Reference Network.
Journal ArticleDOI
Estimating parameters of a forest ecosystem C model with measurements of stocks and fluxes as joint constraints
Andrew D. Richardson,Mathew Williams,David Y. Hollinger,David J. P. Moore,D. Bryan Dail,Eric A. Davidson,Neal A. Scott,Robert S. Evans,H. Hughes,J. T. Lee,Charles A. Rodrigues,Kathleen Savage +11 more
TL;DR: An inverse modeling analysis of a simple forest C-cycle model, DALEC, using a variety of data streams to estimate parameters and initial carbon stocks finds that woody biomass increment, and, to a lesser degree, soil respiration, measurements contribute to marked reductions in uncertainties in parameter estimates and model predictions.