Take-home message from airborne in-situ quantification of methane emissions from oil and gas production in Romania
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| License | CC Attribution 3.0 Germany: You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | |
| Identifiers | 10.5446/69355 (DOI) | |
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| Production Year | 2024 | |
| Production Place | Tehran |
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00:00
Computer animation
00:24
Computer animationDiagram
Transcript: English(auto-generated)
00:01
Hi, everyone. My name is Hossain Mauselei, and I would like to provide a brief explanation about our manuscript, which is an output from the ROMO campaign that took place in Romania in 2019. You can see the list of collaborators in this slide, and this work is the result of a strong, constructive hand-in-hand international collaboration between various organizations from different countries.
00:25
In this campaign, the airborne measurements were conducted using two aircraft, which were equipped with in-situ measurements. They flew in either circular pattern at various altitudes around target clusters or regions,
00:41
or in raster flight pattern above target areas. The circular pattern flights were operated by Scientific Aviation from the USA, and the raster flights were conducted by the National Institute for Aerospace Research in Romania. Methane emissions from target clusters and regions were quantified using the circular flights and plume areas.
01:07
The plume area is defined as the integrated methane enhancement above background along flight tracks. From both flights were used for comparison purposes with the model outputs.
01:21
Talking about models, we used two models to simulate transport of methane emissions, which were then used for sampling methane mixing ratio along the flight tracks for comparison purposes with the measurements. The COSMO-GHG model was run by the Swiss Federal Laboratories for Material Science and Technology,
01:45
with metallurgical fields NOS2 observations, and the MEKO3 model was run by the German Aerospace Center with metallurgical fields NOS2 global model instance. Five inventories were used to run these simulations and interpret these results.
02:03
The inventory we received from the APRIDA, the TNO greenhouse gas and co-emitted species emission inventory, the European Pollutant Release and Transfer Register industrial emissions directive inventory,
02:22
the TNO Copernicus atmospheric monitoring service for European regional inventory, and the Emissions Database for Global Atmospheric Research, as known as ETGA. After evaluating the measurements and accounting for non-oil and gas emitters within the target clusters and regions,
02:46
removing double counting of measurements and double counting of active sites within the study area, we reached the emission factor of 543 plus minus two kilogram per hour per site from the airborne in situ measurement,
03:08
which is consistent with the emission factor previously reported from the ground-based measurements during the ROMO campaign. You can see the comparison of these two emission factors in this slide.
03:26
And when we compare the plume areas derived from the measurements and the simulations, we can see that generally the plume areas calculated from these simulations is underestimated by a factor of two.
03:50
However, quantitatively speaking, concluding that this estimation by a factor of two is definitely challenging,
04:01
for example, due to the influence of a relatively small number of plumes with larger areas. As a take-home message, I would like to mention that the emission factors from the airborne in situ measurement is in good agreement with the emission factor derived from the ground-based measurement during the ROMO campaign.
04:28
The result from this manuscript shows that the emission from oil and gas activities in Romania was significantly underreported to UNFCCC in 2019,
04:46
which was also noted in previous findings. And we can also see significant underestimation of oil and gas emissions in EDGA version number seven for our study area.
05:06
I would like to acknowledge the Climate and Clean Air Coalition, an oil and gas methane science society hosted by the United Nations Environment Programme.
05:22
Funding was provided by the Environmental Defence Fund, Oil and Gas Climate Initiative, European Commission and CCAC. These projects received further funding from Horizon 2020 project called Memo Squared.
05:41
And for the modelling work, resources was used from German Climate Computing Centre for running the MEKO-3 simulations. And I received the support from Iranian vice presidency for science and technology during my postdoc at the University of Tehran.
06:12
I'm very pleased to have shared with you a brief overview of these high quality research supported by strong minds and capabilities.
06:23
Greetings from the University of Tehran in Tehran, Iran. Goodbye.