Satellite-based GHG emission monitoring and flux inversion in upstream and midstream natural gas projects
上流・中流天然ガスプロジェクトにおける衛星ベースのGHG排出モニタリングとフラックスインバージョン (AI 翻訳)
Ruoyi Wang, Jingyao Sun
🤖 gxceed AI 要約
日本語
本論文は、天然ガス上流・中流プロジェクトにおけるメタン排出の衛星観測とフラックスインバージョン手法を提案。Sentinel-5Pデータと気象再解析データを用い、サラト盆地やカーティス島周辺のホットスポットを検出し、質量保存則に基づくフラックス推定により有意なメタン排出を定量化。上流採掘と中流液化の排出寄与の空間的不均一性を示し、バリューチェーン全体の排出削減評価に技術的基盤を提供。
English
This paper proposes a satellite-based methane monitoring and flux inversion framework for upstream and midstream LNG projects. Using Sentinel-5P XCH4 and ERA5 reanalysis data, it detects hotspot areas around the Surat Basin and Curtis Island, and estimates methane fluxes via mass-balance inversion, finding significantly higher fluxes than background levels. The results highlight spatially heterogeneous contributions from extraction and liquefaction, providing a technical basis for emission reduction assessment across the natural gas value chain.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本はLNG輸入大国であり、サプライチェーン全体のメタン排出管理はSSBJや投資家要求の観点から重要。本手法は日本の電力・ガス会社による自主的な排出モニタリングや、産ガス国との協力に応用可能。
In the global GX context
Methane monitoring is a global priority under the Global Methane Pledge and ISSB disclosure standards. This satellite-based framework offers a scalable approach for independent emission verification, particularly relevant for LNG-exporting regions and corporate accountability in the natural gas sector.
👥 読者別の含意
🔬研究者:Provides a validated methodology for integrating satellite data and reanalysis for methane flux inversion in oil and gas settings.
🏢実務担当者:Offers a technical pathway for corporate methane monitoring and emission reduction assessment across LNG value chains.
🏛政策担当者:Demonstrates the feasibility of satellite-based regulatory oversight for methane emissions in the natural gas sector.
📄 Abstract（原文）
Accurate monitoring, and quantification of greenhouse gas (GHG) emissions across oil and gas operations has become an essential foundation for corporate emission management and regulatory compliance, as the global natural gas industry transitions toward low-carbon development. A satellite-based methane emission inversion and quantitative monitoring framework is tailored for upstream and midstream liquified natural gas (LNG) projects. This study integrates Sentinel-5P XCH4 products with ERA5 reanalysis meteorological datasets to implemente hotspot detection and flux inversion using the R platform. Results show that, during the study period, methane anomalies were concentrated mainly over the Surat Basin and the coastal region near Curtis Island, displaying multi-centered and spatially discrete patterns. Flux estimates derived from the mass-balance inversion demonstrated that in hotspot regions, methane fluxes were significantly higher than background levels. The findings highlight spatially heterogeneous contributions of upstream extraction and midstream liquefaction processes to regional carbon emissions, offering a technical pathway and data foundation for methane monitoring, souring attribution, and emission-reduction assessment across the natural gas value chain.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1117/12.3110839first seen 2026-06-23 06:17:42 · last seen 2026-07-04 05:37:48
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