TY - JOUR
T1 - Capturing gas fluxes on your phone
T2 - An iOS- And Android-based Data-Logging Setup for EGM-4 Environmental Gas Monitoring Systems
AU - Sterk, Henk Pieter
AU - Detrey, Iain
AU - Marshall, Chris
AU - Cowie, Neil R.
AU - Payne, Richard
AU - McIlvenny, Jason
AU - Andersen, Roxane
PY - 2019/8/15
Y1 - 2019/8/15
N2 - Mobile devices have become increasingly important for field monitoring to improve data capture efficiency, increase storage capacity, and replace heavy equipment. We introduce a quick and straightforward protocol to capture greenhouse gas (GHG) emission rates on mobile devices. We developed our setup on the widely used infrared gas analyzer (IRGA) EGM-4 by PP Systems. This IRGA has a limited internal storage capacity and requires an external device such as a laptop to conduct even modest field sampling. Furthermore, when raw data storage is required, carbon dioxide concentration resolution is reduced by the internal EGM-4 software settings, making the equipment less suitable for high-frequency measurements. Our protocol lets the user bring either an iOS or Android mobile device in to the field to connect to the EGM-4's data stream. For both platforms, a mobile console application was used to read, log, and share flux data. The raw data can be processed in either Python, R, or Matlab using the provided scripts that give the user flexibility to amend further postprocessing steps to obtain GHG fluxes. We demonstrate the flexible applicability of mobile devices for field recording and show that a cost-effective solution can enhance the operational life of superseded field equipment while also increasing the quality of the captured data.
AB - Mobile devices have become increasingly important for field monitoring to improve data capture efficiency, increase storage capacity, and replace heavy equipment. We introduce a quick and straightforward protocol to capture greenhouse gas (GHG) emission rates on mobile devices. We developed our setup on the widely used infrared gas analyzer (IRGA) EGM-4 by PP Systems. This IRGA has a limited internal storage capacity and requires an external device such as a laptop to conduct even modest field sampling. Furthermore, when raw data storage is required, carbon dioxide concentration resolution is reduced by the internal EGM-4 software settings, making the equipment less suitable for high-frequency measurements. Our protocol lets the user bring either an iOS or Android mobile device in to the field to connect to the EGM-4's data stream. For both platforms, a mobile console application was used to read, log, and share flux data. The raw data can be processed in either Python, R, or Matlab using the provided scripts that give the user flexibility to amend further postprocessing steps to obtain GHG fluxes. We demonstrate the flexible applicability of mobile devices for field recording and show that a cost-effective solution can enhance the operational life of superseded field equipment while also increasing the quality of the captured data.
UR - http://www.scopus.com/inward/record.url?scp=85072956152&partnerID=8YFLogxK
U2 - 10.2134/jeq2019.04.0163
DO - 10.2134/jeq2019.04.0163
M3 - Article
C2 - 31589702
AN - SCOPUS:85072956152
SN - 0047-2425
VL - 48
SP - 1557
EP - 1560
JO - Journal of environmental quality
JF - Journal of environmental quality
IS - 5
ER -