It’s a wonderful piece (highlighted on the EAPS department website) about her first the AGU experience written through her uniquely balanced scientific and artistic perspective. For example, she writes, “Science, nature, life, emergence, and the universe have always inspired my art. And it is the unnecessary beauty of science that makes it deeply mysterious and so inviting to my mind… AGU was an incredible week of reconnecting with friends, advisors, professors, fellow researchers. It was also unexpectedly a way for me to connect a path to a foreseeable future where my two passions can be combined, perhaps even muddled, into an exciting career.”Share on Facebook
I was thrilled to give a talk this year at AGU in the full-day, highly subscribed Biosphere-Atmosphere Greenhouse Gas Fluxes in Terrestrial Ecosystems IV session organized by Paul Stoy, Christopher Williams, and Todd Scanlon. I’m looking forward to publishing these results very soon!
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I defended my thesis entitled “Field Measurement of the Fate of Atmospheric H2 in a Forest Environment: from Canopy to Soil” on October 4, 2012.
It was an incredible relief to finish the thesis document itself (link to .pdf). I really enjoyed preparing and giving my thesis defense presentation. It’s not often that one gets to present the culmination of six years of hard work and personal development to colleagues, family, and friends. I am grateful for mentorship from my advisor Ron Prinn, my thesis committee (Steve Wofsy – Harvard, Bill Munger – Harvard, Tanja Bosak – MIT, Colleen Hansel – WHOI, Shuhei Ono – MIT), and many others along the way!
I am continuing at MIT for a short (approximately 9 month) postdoctoral position with Ron Prinn to translate the work described in my thesis to publications. I am currently exploring possibilities for a postdoctoral position at the intersection of microbial ecology and atmospheric chemistry (trace gas cycles or aerosols) by searching advertised positions and writing fellowship proposals.Share on Facebook
Last week I attended ISME 14 (International Symposium on Microbial Ecology) in Copenhagen, Denmark. It was a delight to see the city – its juxtaposed giant modern, cool, sterile buildings surrounding the historic old city. More of a delight was unexpectedly running into friends from the MBL Microbial Diversity summer school (2010) and realizing they are now my colleagues.
The conference itself was quite good. I appreciated the range of content from very big picture and abstract to focused experimental projects. One message I took away from the community was a sort of -omics backlash, or perhaps whiplash, to the idea that generating more and more -omics data is the sole future for microbial ecology. It seems that presenters coming from both the -omics and experimental side were acknowledging the importance of both tools, and especially of using them together. Those seem to be a lot of tools for any one scientist to master, so I am encouraged that the tone was of collaborative holistic approaches for tackling scientific questions.
I really enjoyed a somewhat unique session. It was a discussion entitled “Frontiers in microbial ecosystem science: Energizing the research agenda” sponsored at this and other conferences by the US National Science Foundation. All sorts of issues were raised in a discussion of “what needs to be done” – what are the important topics and how should we advance microbial ecology. I was struck by how strong the arguments were that microbial ecology is important for understanding, and possibly mitigating, climate change. This is my main interest, but I often find the microbial ecology literature and research interests so focused on minute points (I think my own project included), that it is difficult to see the link between the microbial and global scales. At this session I learned that it is not only because it is difficult to do, but also because the funding agencies seem to push scientists to write grants in one or the other. It is difficult to be interdisciplinary (falling under more than one NSF department). It has been a (fun) challenge for me to try to get a foot in both atmospheric and microbial ecology science, and it was encouraging to hear from the community that the intersection of the two is valued.
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At the 2012 EAPS Student Awards Ceremony Deepa Rao received the Christopher Goetze Prize for Undergraduate Research for her thesis entitled : “Exploring the Microbe-mediated Soil H2 sink: A lab-based study of the physiology and related H2 consumption of isolates from the Harvard Forest LTER.” The award recognizes “ innovative experimental design, care in data collection, and sensitive application of results to research problems.”
It has been a pleasure to supervise Deepa’s thesis research and her results will contribute to our research efforts to understand the mechanisms driving the soil sink for atmospheric H2. Professor Ron Prinn acts as the faculty advisor for both Deepa and I.
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Micro-organisms have produced dramatic shifts in the composition of the Earth’s atmosphere and continue to be important drivers of ocean- and land-atmosphere exchanges of gases that have a strong influence on atmospheric composition and climate. An interesting example is the microbial influence on atmospheric molecular hydrogen (H2), which dominates the fate of this gas in the atmosphere. H2 is emitted to the atmosphere by about half natural and half anthropogenic, or human-induced, processes but it is predominantly removed from the atmosphere by microorganisms in the soil, which makes this process the most important, yet least understood, player in the atmospheric H2 budget.
In this video graduate student Laura Meredith shares her thesis work to build and deploy an instrument to the Harvard Forest Long Term Ecological Research site in central Massachusetts. Laura is in the Climate Physics and Chemistry Program. Her advisor is Ron Prinn.Share on Facebook
I just returned to Boston after the six weeks of travelling. My two weeks in California, filled with conferences and colleagues, was quite different from the intensive and somewhat isolated period spent in India.
First stop was San Diego, where I attended the 44th Meeting of Advanced Global Atmospheric Gases Experiment (AGAGE) Scientists and Cooperating Networks at the Scripps Institute of Oceanography in La Jolla. Anita Ganesan’s instrument in Darjeeling may pave the way for the first AGAGE site in India, so the crowd was eager to hear her describe our success in deploying her instrument. Her dedicated and diligent work is paying off as she is collecting some of the first high precision direct greenhouse gas measurements in India.
I gave a talk at the AGAGE meeting on my recent work on the flux of H2, CO2 and COS between the soil and atmosphere at Harvard Forest. I focus on the persistence of soil-atmosphere exchange of trace gases across snowpack, which insulates the soil microbial community from freezing air temperatures while allowing trace gases to diffuse through the porous snow matrix. I’m interested in how strongly the biogeochemical cycling continues throughout the winter and in comparing the behavior of the different cycles in the low temperature ‘incubator’ beneath the snow. Continue readingShare on Facebook
I’m in my second week in India, where I am helping fellow Prinn-group graduate student Anita Ganesan deploy her gas chromatograph to Darjeeling, a town high on a ridge in West Bengal in the foothills of the Himalayas (Anita has a blog now!). It’s quite a trek to get to the Bose Institute where her instrument will be housed. We spent a few days adjusting to the change in time and culture in the hectic city of Kolkata. A haze hung over the city, making the day seem darker and the nights lighter, and there was a constant smell of burning. It was not unpleasant, but the concerns about the impact of particulate levels on air quality and health that we are taught in the classroom were made real. Two million people in this city and its surroundings breathe this local atmosphere daily, until it is exported to the globe. Continue readingShare on Facebook
It’s my fourth year as a TA for our ‘Experimental Atmospheric Chemistry’ undergraduate and graduate course at MIT, and today we have loaded up the department’s van with nitric oxide (NO) and ozone (O3) monitors, a uv radiometer, and three particulate monitors (PM 10, 2.5, and 1.0 um). As part of the ‘Pollution Exposure’ unit, Continue readingShare on Facebook