newsletter.
DGE Newsletter, May 2005
Field Lab Meetings
New Facullty Member
May 9: John Juarez discussed the Image 2.0 Model. The citation for reading was Alcamo, J., G.J.J. Kreileman, M.S. Krol, and G. Zuidema. 1994. Modeling the global society-biosphere-climate system .1. Model description and testing. Water Air And Soil Pollution 76:1-35.
May 18: The Group discussed modeling in general and specifically what ones might be pursued.
May 23, 1 PM: Ulli Seibt discussed the CLIMBER model in connection with a paper by Ganopolski et al titled Simulation of modern and glacial climates with a coupled global model of intermediate complexity. More discussion about Models in general followed.
June 1, Wednesday at 2:30 PM, next FLAB Meeting.
On July 1, we'll be welcoming Ken Caldeira to the DGE faculty. He comes to us from the Climate & Carbon Cycle Modeling Group at the Lawrence Livermore Nat'l Laboratory and is a Physicist with specialties in Atmospheric Science and Oceanography. Here is a snapshot of Ken taken when he gave us a seminar on Nov. 24, 2003.
Also Yingping Wang, originally from CSIRO, Melbourne, and associated with the Internat'l Program for Carbon-flux Modeling will be visiting us again for a few months.
Asner Lab News
May 4: David Lobell defended his PhD thesis titled: A remote sensing approach to understand controls on cropland productivity. In his introduction, Greg Asner characterized Dave as usually "keeping his cool" and being "one step ahead" as illustrated by the fact that he already has a job to go to in mid-July at the Lawrence Livermore Nat'l Lab.
Dave's Thesis describes how it will be necessary to increase the World's food supply by about 30% to feed an expanding population before the latter levels off some years hence. From his model studies in the Yaqui Valley of Mexico with irrigated wheat, it's apparent that nitrogen and water supply are poorly correlated with yield whereas planting date, soil type, and weeds are. He was able to show how these latter three factors could be estimated on a global scale by using "remote sensing" data from satellites. In turn these data will help farmers increase their crop yields in the future.
SEMINARS
Editor Jan Brown
e-mail: jbrown@globalecology.stanford.edu
Click on photos for enlargement.
On May 18, Joe Berry speaking on "Interactions Between the Biosphere and the Atmospheric Boundary Layer" presented the last seminar of Spring Quarter. He gave us a lucid explanation of what this Boundary Layer is and how CO2 and water vapor fluxes above and below it are measured. In so doing, he also talked about weather patterns and how forcasting is improving.
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