April 19: David A. Randall, Dept. Atmospheric Science, Colorado State University spoke to the title: Counting the Clouds. He was introduced informally as "one of the few people in the world who could construct a GCM (global circulation model) from the ground up." Dave and his colleagues are hard at work collecting data to more accurately model cloud formation and behavior from tiny droplets to large clouds circling the globe.
April 26: Prof James Ehleringer, Univ. Utah at Salt Lake spoke to the title: Insights into the carbon cycles of natural and human-built ecosystems based on CO2 observations. Jim first led us through some CO2 history including the contributions of Joe Berry & Olle Bjorkman with whom he had worked here in Plant Biology. He then described how social activities in an urban setting greatly affect the local carbon balance and how they may be mitigated.
April 27: Dr. Britaldo Silveira Soares-Filho, Federal University of Minas Gerais, Brazil spoke to the title: The Amazon Scenarios Project: Modeling in support of sound policy development. He described the increasing use of "Protected Areas" in Brazil and the problems of reconciling agricultural use with forest conservation.
April 28: Dr. Jung-Eun Lee who has worked for NASA and is currently at the JPL visited Joe Berry and gave us a seminar with the title Amazon drought: Are we responsible? She also discussed her current project measuring chlorophyll fluorescence from space by the GOSAT satellite. We learned that over land, solar energy is more important than wind speed in determining the evaporative flux.
April 4: Greg Asner writes about a paper just out using the CAO to map and assess grazing forage quality for African animal populations. Nicky is one of many graduates students in the CAO program. Interestingly we found that we need to add new capabilities to the CAO – mainly shortwave IR mapping – which we happen to be adding on April 27 when we launch CAO-2.
April 15: In her final week at Carnegie, Mona Houcheime inspired three Plant Biology-DGE inter-department social events including a second international food day, a potluck, and a BBQ on Roble Field. After two-plus years of careful and dedicated work, Mona is leaving the Asner lab and DGE for even greener pastures. Working on the Spectranomics project at Global Ecology has inspired Mona to continue her pursuit of a multidisciplinary career in the sciences in a way that will positively impact communities.
April 14: Ken Caldeira, along with colleagues George Ban-Weiss (currently at Lawrence Berkeley National Laboratory) and Govindasamy Bala, quantifies how black carbon’s impact on climate depends on its altitude in the atmosphere. Their work, published online by the journal Climate Dynamics, could have important implications for combating global climate change.
April 27: Steve Davis spoke at the EESS noon Seminar Series on the topic – The Supply Chain of CO2 Emissions. He had given this talk previously at SLAC on April 25. Along the supply chain of global CO2 emissions, 10.2 billion tonnes (Gt) of CO2, or 37% of global emissions, are from fossil fuels that have been traded internationally, and an additional 6.4 Gt CO2, or 23% of global emissions, are embodied in goods and services traded internationally. The detailed model results reveal vulnerabilities and benefits related to current patterns of energy use that are relevant to climate and energy policy.