Sallies Fen, Barrington NH- Produces an unique multi year datasets of consistent trace gas (CH₄ & CO₂) flux and meteorological measurements (See Weekly Data) across a the poor fen complex. Recently measurements of plant biomass and phenology along with automatic CO₂ flux chambers has been an interesting investigation at Sallies Fen. Such datasets are the only way to assess the long-term integrated ecosystem response to a changing climate. See Other Sallies Shots

Hooper et al. Correction curve for the LI-6200 used at Sallies Fen.

LBA-ECO, Tapajos National Forest, Belterra, Para, Brasil We are studying the exchange of nitrous oxide, and methane from natural and selectively logged forest sites. In addition, we study the main heterotropic and autotrophic respiration components. LBA-ECO is part of the Brazilian led LBA project.

Click here to explore photo gallery of this project.

Harvard Forest, Petersham MA Ambient CH₄ was measured to determine the long term trends and seasonal cycles CH₄. To further understand the global cycle of methane the data collected is also compared to assessments of CH4 by the Intergovernmental Panel on Climate Change.

Harvard Forest, Petersham MA - As of April 2003, we have begun to make continuous measurements of the CO2 exchange along a soil moisture gradient near the Harvard Forest (http://lternet.edu/hfr/) tower flux site. Automated chamber flux systems provide independent, accurate, and simultaneous measurement of diurnal CO2 efflux, and therefore a means to quantitatively partition the components of the net efflux. By doing so it also provides a means to evaluate the eddy-flux measurements at the Harvard Forest Environmental Measurement Site (http://www-as.harvard.edu/chemistry/hf/index.html). Click here for data, diagrams and other project details.

Sweden STINT Project, Abisko SE

Check out some northern shots here.

Methyl Bromide Studies at UNH and Beyond The methyl halogens, methyl bromide (CH₃Br) and methyl chloride (CH₃Cl) are important trace gases in regulating stratospheric and tropospheric ozone (O₃). They are the most important natural contributors of reactive chlorine and bromine in the atmosphere. Our research laboratory was the first to establish soils as a significant sink of CH₃Br. We have collected 230 soil samples from over 90 sampling locations from across the globe. . We now have three growing seasons of data on the exchange of CH3Br at two temperate wetland sites, Sallie's Fen and Angie's Bog. (Poster Overview)