Category: Ranga Myneni
A paper entitled “Greening of the Earth and its Drivers” published in the journal Nature Climate Change in April 2016 has made it into the top 10 climate change articles of 2016. The first author Zaichun Zhu was a Visiting Scholar in Prof. Myneni’s research group. Details can be found here, and the full article can be found here.
Earth and Environment Professor Ranga Myneni recently coauthored an article titled “Reducing uncertainties in decadal variability of the global carbon budget with multiple datasets” in the journal Proceedings of the National Academy of Sciences of the USA. Conventional approaches of calculating the global carbon budget makes the land sink the most uncertain of all budget terms. This is because, rather than being constrained by observations, it is inferred as a residual in the budget equation. In this article, the authors overcome this limitation by performing a Bayesian fusion of different available observation-based estimates of decadal carbon fluxes. This approach reduces the uncertainty in the land sink by 41% and in the ocean sink by 46%. These results are significant because they give unprecedented confidence in the role of the increasing land sink in regulating atmospheric CO2, and shed light on the past decadal trend.
Professor Myneni’s website is sites.bu.edu/cliveg.
PhD student Sungho Choi recently published his dissertation research in the journal Global Ecology and Biogeography. Entitled “Application of the metabolic scaling theory and water–energy balance equation to model large-scale patterns of maximum forest canopy heights,” the article describes refinements to a model called Allometric Scaling and Resource Limitations (ASRL), accounts for the size-dependent metabolism of trees whose maximum growth is constrained by local resource availability. The article can be downloaded at http://onlinelibrary.wiley.com/doi/10.1111/geb.12503/pdf.
Mr. Choi was a Fulbright Scholar and a recipient of the NASA Graduate Fellowship. He hopes to defend his dissertation during the fall 2016 term. His PhD supervisor is Prof. Myneni.
PhD student Taejin Park recently published his ongoing dissertation research in an article in the journal Environmental Research Letters. Entitled “Changes in growing season duration and productivity of northern vegetation inferred from long-term remote sensing data,” the article describes three decades of changes in northern vegetation activity and is part of an ERL special issue on Focus on Recent, Present and Future Arctic and Boreal Productivity and Biomass Changes. The article can be downloaded here.
Mr. Park is a recent NASA Graduate Fellowship winner and is in his third year of PhD studies with Prof. Myneni.
Prof. Prof. Rautiainen and Dr. Mottus visit Earth & Environment’s Myneni & Knyazikhin Research Group
Prof. Miina Rautiainen of the University of Aalto (Finland) and Dr. Matti Mottus of VTT Technical Research Center of Finland are visiting Profs. Myneni-Knyazikhin research group for three weeks in September. Our collaborative research includes design of field studies, validation of satellite LAI and FPAR products, and radiative transfer theory for remote sensing of vegetation.
More information about the project, Prof. Rautianen, and Dr. Mottus can be found at:
A research article titled “Human-induced greening of the northern extratropical land surface” was published this week in the journal Nature Climate Change. The paper reports that the observed greening record is consistent with an assumption of anthropogenic forcings, where greenhouse gases play a dominant role, but is not consistent with simulations that include only natural forcings and internal climate variability. The paper can be downloaded from the journal, and a lay man’s description of this work and its significance can be found in a recent news item from the Washington Post.
Prof. Myneni’s web site is: http://sites.bu.edu/cliveg/.
A paper titled “Satellite-observed changes in terrestrial vegetation growth trends across the Asia-Pacific region associated with land cover and climate from 1982 to 2011” was recently published in the International Journal of Digital Earth by Chen et al. Prof. Ranga B. Myneni is a coauthor of this paper.
Prof. Myneni’s web site is http://sites.bu.edu/cliveg/.
Ms. Yan Yang, a PhD student has published a paper titled “Abiotic Controls on Macroscale Variations of Humid Tropical Forest Height” in the peer-refereed journal Remote Sensing. The paper describes her PhD dissertation research.
The paper can be downloaded from http://sites.bu.edu/cliveg/publications/publications-2016/
Her first reader is Prof. Ranga B. Myneni.
Mr. Sungho Choi, a final year PhD student won the prestigious NASA post-doctoral fellowship tenable at NASA Ames Research Center in Moffett Field, CA. Mr. Choi will defend his dissertation later this year. His research is focused on modeling tree heights and biomass using principles of allometric scaling and resource limitations theory. His first reader is Prof. Ranga B. Myneni.
Three Earth & Environment PhD candidates are among the winners of this year’s NASA Earth and Space Science (NESSF) Fellowship Program:
Eric Bullock was awarded the NESSF for his project titled “Improved Activity Data for Carbon Emissions from Forest Degradation Through Multi- Sensor Time Series Analysis in Southeast Asia.” Bullock is advised by Earth & Environment Professor Curtis Woodcock.
Taejin Park was awarded his fellowship for his project titled “Investigation on Changing Photosynthetically Active Growing Season and Gross Productivity of Northern Boreal/Arctic Vegetation Using EOS MODIS and Suomi VIIRS Data in Conjunction with Ground Observations.” Park is advised by E&E Professor Ranga Myneni.
More information about the NESSF program can be found here.