42 Air Monitoring Arctic soil methane consumption:


A deeper look into its impact in drier climates Arctic wetlands have long been recognised as sources of the potent greenhouse gas methane (CH4). Conversely, well-drained soils play a crucial role in removing methane from the atmosphere. In the expansive Arctic and boreal biomes, these well-drained upland soils, with their substantial potential for methane consumption, cover more than 80% of the land area. However, despite their vast coverage and potential signifi cance in methane uptake, the underlying mechanisms, environmental factors, and the actual magnitude of Arctic soil methane consumption remain poorly understood. A recent study led by researchers from the University of Eastern Finland and the University of Montreal challenges our previous assumptions by suggesting that Arctic soil methane consumption might be more substantial than previously believed. This consumption is also found to increase under drier conditions and with the availability of labile carbon substrates. Their fi ndings have been published in the prestigious journal Nature Climate Change.


The primary research location was Trail Valley Creek, a tundra site in the Western Canadian Arctic. To conduct their investigations, the researchers employed a unique experimental setup comprising 18 automated chambers designed for continuous methane fl ux measurements. Notably, there are very few automated chamber systems in the Arctic, with most of them installed at sites emitting methane. Thus, the high-resolution measurements taken (more than 40,000 fl ux measurements) revealed previously unknown diurnal and seasonal patterns in methane consumption. For example, while methane uptake was highest during the afternoons in early and peak summer, coinciding with maximum soil temperature, it peaked during the night in late summer. Although the biogeochemical mechanisms driving these patterns are intricate, the study highlights that the most signifi cant methane consumption aligns with peaks in ecosystem carbon dioxide (CO2) respiration. Additionally, data from various sites across the Arctic in Canada and Finland indicate that the availability of labile carbon substrates and nutrients may enhance methane consumption in Arctic soils.


These fi ndings have broader implications for our understanding of the current Arctic methane budget and predicting how Arctic soil methane consumption will respond to a changing climate. The study suggests that the rate of high-latitude warming, which is occurring up to four times faster in the Arctic compared to the rest of the world, will have a relatively smaller effect on promoting atmospheric methane uptake than the concurrent large-scale drying of the region. Conducted by an international team of researchers from Canada and Finland, with collaborators from the United States and Germany, this study received funding from sources such as the Academy of Finland, the Canada Foundation for Innovation project Changing Arctic Network, ArcticNet, and the Canada Research Chair and NSERC Discovery Grants programs. Fieldwork was made possible through support from Metsähallitus and the Aurora Research Institute.


Customisable state-of-the-art gas analysers


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for a host of environmental monitoring applications smartGAS recently showcased its state-of-the-art gas analysers at Sensor + Test in Nuremberg. These have been designed to meet the demanding requirements of a wide range of industrial sectors. With an extensive variety of applications, these advanced devices deliver accurate and reliable results for industrial analytical tasks such as TOC measurement, process gas analysis, biogas analysis, exhaust analysis, air quality monitoring, and emission measurement. The ANAREX product family from smartGAS has impressed with its stable high-precision measuring performance, intuitive operation, and easy calibration process. These multi-gas analysers can be easily commissioned via plug-and-play. With a fl owmeter at the front, users have control over the gas fl ow while being able to read the measuring values on the clear, 5.6-inch LCD touchscreen or transmit them through the RS232 interface and analogue output.


What makes the ANAREX product family stand out is the variability of the sensors used. By incorporating a wide range of technologies, these instruments can effectively analyse a vast spectrum of sample gases. Designed for installation in a 19” rack, the ANAREX offers the versatility needed for industrial multi-gas analysis. Other key features of the ANAREX gas analysers include high and stable measurement performance, simple sensor calibration, and both analogue and digital output options. To provide the most suitable solution for each customer’s specifi c application, smartGAS offers an array of sensor technologies that can be integrated into the ANAREX analysers. In addition to the NDIR sensors from the SILAREX and FLOWEVO series, customers can choose from paramagnetic, photoacoustic, or electrochemical sensors. This adaptability allows for the creation of an optimal measuring system tailored to individual needs.


The ANAREX gas analysers require little maintenance while providing high durability and long-term stability with minimal drift. They boast low detection limits and short response times, making them indispensable tools for critical gas analysis tasks. These devices can measure up to fi ve gases using three sensors; they provide the end user with comprehensive and accurate data. The internal software ensures precise zero and end-point calibration, guaranteeing optimal accuracy of the measuring values.


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Casella Family of Air Sampling Pumps


Casella is a global leader in the manufacturing and supply of occupational hygiene and environmental monitoring equipment. For over 200 years, Casella continue to provide innovative solutions that help improve health in the workplace & the community.


Casella offers a range of air sampling pumps, ideal for measuring exposure to dust and vapours. From low, to medium and high fl ow air sampling pumps, Casella pumps are well-known for their reliability, accuracy, and user-friendly features.


Stay connected with the airwave app, Casella’s range of air sampling pumps utilise the latest technology to enable remote monitoring with a tablet or mobile phone via the airwave app. The airwave app allows accessor to Start/Stop and Pause your instrument and view real time data using Bluetooth®


notes and photographs to your laptop for easier reporting.


Casella’s wearable pumps have a slim, ergonomic design, the pump is less obtrusive to the wearer, allowing them to carry on with their job whilst being monitored. The Apex2 medium-fl ow sampling pump features a sturdy clip with a lifetime guarantee, it’s secure and the detachable rubber boot guards against knocks. Ingress resistant to IP65 means that you can use it in the harshest environments.


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Popular emissions monitoring event comes to Bahrain


With 25 years’ experience our acclaimed series of events in Europe, CEM 2025 is poised to address the urgent needs and challenges of emissions monitoring in the Middle East and surrounding regions. The highly anticipated conference and exhibition on emissions monitoring, CEM Middle East is set to be hosted in Bahrain from 8th to 10th April 2025 at the Gulf Hotel and Convention Centre in Manama.


The Middle East is currently grappling with complex environmental and public health challenges, many of which stem from industrial emissions. Dominated by the oil and gas sector, the region must contend not only with signifi cant greenhouse gas emissions, but sulphur dioxide and volatile organic compounds (VOCs) released during refi ning, extraction and distribution, with the region’s dependence on these fuels for power generation increasing the concentration of nitrogen oxides and particulate matter in the air. Moreover, a recent surge in construction and manufacturing has contributed to spikes in polluting cement dust, sulphur oxides and heavy metals.


Aiming to provide a networking hub for process operators, regulators and environmental managers from across the Middle East, CEM Middle East will bring industry stalwarts and eminent thought-leaders together with leading instrument and service providers to offer unparalleled insight and show off the latest technology. The conference will explore the escalating importance of emissions monitoring solutions in the region, touching on topics as varied as dust measurement, emission regulation, air quality networks, stack monitoring, ambient air monitoring, fence line monitoring, future monitoring challenges, marine CEMs, fugitive and diffuse emissions, greenhouse gases, hydrogen, mercury and trace metals, data handling and acquisition, Internet of Things (IoT).


connectivity. You can also email the data, alongside


A nexus of Middle Eastern commerce, culture and history, Manama’s world- class facilities provide an elegant and stimulating environment for discussing the pressing challenges confronting the region in the coming years – and with two UNESCO World Heritage sites, a thriving souq and one of the world’s largest mosques, there’s no shortage of places to explore outside of the conference hall.


If you’re interested in exhibiting at or otherwise attending CEM Middle East, please visit: www.ilmexhibitions.com/ cem-middleeast


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