| Summary: | This file contains all of the methane flux data obtained from chamber measurements taken on the Barrow Environmental Observatory (BEO) from June 13 2015 to June 27 2015. This file also contains soil conductivity, pH, temperature, concentrations of anions, dissolved organic carbon, iron II, and iron III data. This work determines the proportional contribution of methane flux from four different landscape feature types in Arctic polygonal tundra. This work additionally investigates the mechanism by which differences in methane flux might occur by measuring methanogenic substrate concentrations as well as a host of other soil chemical and physical properties. This data set is part of a larger work comparing chamber methane flux measurements to eddy co-variance measurements that seeks to improve landscape emissions models by studying the release of methane from Arctic polygonal tundra during the early spring thaw period. This period is characterized by a rapid release of methane as the soil thaws. It is hypothesized that emissions during this time period may be categorically different from peak growing season emissions, specifically with regard to the proportional contribution of different landscape features. This data set makes use of chamber measurements to measure methane flux using an LGR (Los Gatos Research) gas analyzer, field measurements of temperature, pH and conductivity (using an Orion multimeter), and ion chromatography to measure ion concentrations in soil pore water. Soil pore water iron is measured using phenanthroline and dissolved organic carbon with the well known Mn(III) reaction. Thaw depth and water table were measured with metal and wooden rods in the field.
|
|---|