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DGE Newsletter, April 2008
Caldeira Lab
Field & Berry Lab Groups

April 8 from Chris Field: For rest of week I am at the IPCC Plenary in Budapest.  This is a meeting to plot the future of the IPCC.  It is mostly the national delegations and not the scientists.  
Friday (4/11) I am flying back to LA to see Hal (Mooney) accept the Tyler Prize.
Next week, I will be reviewing the Harvard Center for the Environment on Monday (4/14), talking at a DOE conference on the future of climate change experiments on Tuesday, and working with the NRC Board on International Scientific Organizations on Wednesday and Thursday.  A week from Friday (4/18), I will be back in the lab.
April 28: Chris met with a few of the FLAB group to discuss some of what he learned at recent meetings. He also continued the Tasting tradition by bringing five kinds of dried fruit from Whole Foods: peaches, apples, mangos, raspberries & pineapple (best).

April 16: Cristina Archer spoke at the Woods Energy Seminar Series at Stanford on The Importance of Wind Power in a Clean and Renewable Future.
April 18: Cristina Archer & Ken Caldeira have tracked changes in the average position and strength of jet streams using records compiled by various government agencies. The results published today in Geophysical Research Letters indicate that the jet streams in both hemispheres have risen in altitude, shifted toward the poles, and weakened in the northern hemisphere.
These changes fit the predictions of global warming models and have implications for the frequency and intensity of future storms, including hurricanes.
April 25: Bala Govindasamy from the Lawrence Livermore Nat'l Lab gave a special seminar titled Sunshade Geoengineering and Global Hydrology. Bala has found that the hydrological cycle is more sensitive to changes in shortwave radiative forcing (sunlight) than to changes in longwave radiative forcing (greenhouse gases) of the same magnitude.
Asner Group

April 5: Greg Asner has written a summarizing Chapter (12) titled Hyperspectral Remote Sensing of Canopy Chemistry, Physiology, and Biodiversity in Tropical Rainforests for a recent CRC Press Publication (Hyperspectral Remote Sensing of Tropical and Subtropical Forests). It's a compilation of past work of all kinds, with a few things that he never got around to publishing from LBA, etc.
This month
Asner also reports that most of his team will be in Kruger National Park in South Africa.  They'll be carrying out field studies and airborne mapping of key areas in the park.  The focus of the study is on the effects of climate, soils, animals and fire on vegetation structure, composition and carbon dynamics.
April 9: The excitement is mounting as the group prepares to fly to South Africa where several have not been before. Some were scheduled to leave today, but bureaucracy intervened. Now they plan to leave on different flights this weekend (April 12-13).
April 11: Angelica Almeyda and Eben Broadbent led a lunchtime discussion on The political ecology of land conversion in the trinational border Peru-Brazil-Bolivia for the Brazilian Working Group in Bolivar House on Campus.

This has implications both for proposals to engineer Earth's climate and for understanding the response of the climate system to past variation in radiative forcing. He discussed why there is this differential response of the hydrological cycle to different types of radiative forcing.
April 21: The first spring harvest at the JRGCE began today with Todd Tobeck in charge of the crew. Alum Jessica Gutknecht came up from her current location in Santa Cruz to help with sampling the above ground growth. In the photo, Briana Swette (right) has been taking pictures of roots at the bottom of a hollow tube forced into the ground.
Our Landscape
April 22: Alum David Kroodsma writes that he is working full time on a book about his two years on the road with Ride for Climate. He also has started working with Climate Ride 2008 to organize a 5-day bicycle tour from New York City to Washington, DC this September. To learn more go to <www.climateride.org>
April 23: Chris Field spoke in the Los Altos Library on the science of global warming at an event serving to kick off the Cool Los Altos' Low Carbon Challenge. Chris lives in Los Altos where the Group sponsoring this event aims to sign up 500 households to participate in the Challenge.
April 11: California poppies are always a spectacular part of our landscape garden on campus and (4/25) the Fremontia is in full bloom.
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Editor Jan Brown, e-mail: jbrown1@stanford.edu