How Similar Should my Soil Respiration Measurements Be? – A Look at Field Site Spatial Variability

How Similar Should my Soil Respiration Measurements Be? – A Look at Field Site Spatial Variability

Introduction Measuring greenhouse gas emissions in natural and controlled ecosystems can be notoriously tricky, both because of spatial heterogeneity and the highly dynamic systems which are responding to drivers (temperature, moisture, sunlight, etc.) on multiple time scales. This often makes direct comparison between measurement locations and across differing flux measurement instruments and methodologies impractical, if […]

Hot Spots in a Cold Land

Hot Spots in a Cold Land

This blog post was co-authored by Dr. Julia Boike and her team (AWI) and Zhila Rashidi (Eosense) Polygonal ponds in Siberian permafrost and their effect on CO2 emissions The Lena River Delta in northern Yakutia, northeast Siberia, Russia, is one of the largest catchment areas (2,430,000 km2) in the Arctic. The bed of Lena Delta […]

Peat and Whiskey

Peat and Whiskey

Despite covering only 3% of the Earth’s surface, boreal and subarctic peatlands contain between 270 – 320 Tg of carbon, or about 34-46% of the carbon currently present in atmosphere – dominantly as CO2 (IPCC, 2007). Many of these peatlands began their lives after the last glacial maximum, following the retreat of glaciers from the […]

Total Greenhouse Gas Exchange from a Beef Cattle Farm Using Direct Whole Farm Measurements

Total Greenhouse Gas Exchange from a Beef Cattle Farm Using Direct Whole Farm Measurements

Many anthropogenic activities are significant sources of greenhouse gasses, however not all emissions are as easy to quantify as the direct burning of fossil fuels (e.g. for transportation or electricity). Other significant sources of greenhouse gasses including agriculture can be harder to quantify due to the increased number of variables involved. In Canada, this sector […]

The comparison of two chamber designs for measurements of methane fluxes from a Wetland Research Park

The comparison of two chamber designs for measurements of methane fluxes from a Wetland Research Park

Naturally occurring, biologically productive wetlands are significant greenhouse gas contributors, producing roughly 25% of the world’s methane stock. This is a concern to scientists on a global scale, as methane has a Global Warming Potential (GWP) 25x greater than that of CO2. It is imperative to gas flux science to understand the contribution that wetlands […]

Comparing Results of High and Low Frequency Measurements of Greenhouse Gas Fluxes

Comparing Results of High and Low Frequency Measurements of Greenhouse Gas Fluxes

The emission of greenhouse gasses from soils is caused by dynamic factors such as temperature and moisture. These two factors are also influenced by a multitude of external factors such as diel cycles, land management, wetting/drying events and seasonality; which all lead to a high level of variability in greenhouse gasses emitted (Savage et al., […]