Lmst

Environnement
🔴 GHGSat a détecté 5000 panaches de méthane de plus en 2024 qu’en 2023
https://www.lapresse.ca/actualites/environnement/2024-10-31/ghgsat-a-detecte-5000-panaches-de-methane-de-plus-en-2024-qu-en-2023.php
#environnement #gaz #méthane #pollution #sanré #industrie #GHGSat #Monmtréal #Québec #Canada

GHGSatがNASAからメタン排出データの承認を取得
https://spacenews.com/ghgsat-gains-nasa-approval-for-methane-emissions-data/

GHGSatのメタン排出データがNASAのSmallSatデータ取得プログラムで利用可能に。NASAは7社を選定し、総額476百万ドルで契約。 #GHGSat #NASA #SmallSat

#Satelliten helfen uns, #Methan-Lecks zu finden und zu stoppen! #Methan ist viel schädlicher für unser #Klima als CO2. #Satellitenbilder von #GHGSat lassen ein aktives #Gasleck in Großbritannien genau erkennen. Die Satellitendaten stimmen mit Messungen am Boden übereinstimmen. Das hilft, Lecks schneller zu finden und zu reparieren, um unseren Planeten zu schützen.

#Klimaschutz #Umwelt #Technologie

#DOI: 10.5194/amt-17-1599-2024

https://amt.copernicus.org/articles/17/1599/2024/

Measuring #methane from space only began in 2009 with the launch of the Greenhouse Gases Observing Satellite, or #GOSAT, by Japan’s Aerospace Exploration Agency.

Previously, most of the world’s methane detectors were on the ground in North America.

GOSAT enabled scientists to develop a more geographically diverse understanding of major sources of methane to the atmosphere.

Soon after, the Environmental Defense Fund, which led the development of #MethaneSAT, began campaigning for better data on methane emissions.

Through its own, on-the-ground measurements, the group discovered that the Environmental Protection Agency’s estimates of leaks from U.S. oil and gas operations were totally off.

EDF took this as a call to action. Because methane has such a strong warming effect, but also breaks down after about a decade in the atmosphere, curbing methane emissions can slow warming in the near-term.

“Some call it the low hanging fruit,” Steven Hamburg, the chief scientist at EDF leading the MethaneSAT project, said during a press conference on Friday. “I like to call it the fruit lying on the ground. We can really reduce those emissions and we can do it rapidly and see the benefits.”

But in order to do that, we need a much better picture than what GOSAT or other satellites like it can provide.

In the years since GOSAT launched, the field of methane monitoring has exploded.

Today, there are two broad categories of methane instruments in space.

#Area #flux #mappers, like GOSAT, take global snapshots. They can show where methane concentrations are generally higher, and even identify exceptionally large leaks — so-called “ultra-emitters.” But the vast majority of leaks, big and small, are invisible to these instruments.

Each pixel in a GOSAT image is 10 kilometers wide. Most of the time, there’s no way to zoom into the picture and see which facilities are responsible.

#Point #source #imagers, on the other hand, take much smaller photos that have much finer resolution, with pixel sizes down to just a few meters wide. That means they provide geographically limited data — they have to be programmed to aim their lenses at very specific targets. But within each image is much more actionable data.

But between this extremely wide-angle lens, and the many finely-tuned instruments pointing at specific targets, there’s a gap.

“It might seem like there’s a lot of instruments in space, but we don’t have the kind of coverage that we need yet, believe it or not,” Andrew Thorpe, a research technologist at NASA’s Jet Propulsion Laboratory told me. He has been working with the nonprofit #Carbon #Mapper on a new constellation of point source imagers, the first of which is supposed to launch later this yearhand, take much smaller photos that have much finer resolution, with pixel sizes down to just a few meters wide.

That means they provide geographically limited data — they have to be programmed to aim their lenses at very specific targets. But within each image is much more actionable data.

For example, #GHGSat, a private company based in Canada, operates a constellation of 12 point-source satellites, each one about the size of a microwave oven. Oil and gas companies and government agencies pay GHGSat to help them identify facilities that are leaking.

Jean-Francois Gauthier, the director of business development at GHGSat, told me that each image taken by one of their satellites is 12 kilometers wide, but the resolution for each pixel is 25 meters.

A snapshot of the Permian Basin, a major oil and gas producing region in Texas, might contain hundreds of oil and gas wells, owned by a multitude of companies, but GHGSat can tell them apart and assign responsibility.
“We’ll see five, 10, 15, 20 different sites emitting at the same time and you can differentiate between them,” said Gauthier.

“You can see them very distinctly on the map and be able to say, alright, that’s an unlit flare, and you can tell which company it is, too.”

Similarly, GHGSat can look at a sprawling petrochemical complex and identify the exact tank or pipe that has sprung a leak.

But between this extremely wide-angle lens, and the many finely-tuned instruments pointing at specific targets, there’s a gap. “It might seem like there’s a lot of instruments in space, but we don’t have the kind of coverage that we need yet, believe it or not,” Andrew Thorpe, a research technologist at NASA’s Jet Propulsion Laboratory told me.

He has been working with the nonprofit #Carbon #Mapper on a new constellation of point source imagers, the first of which is supposed to launch later this year

https://heatmap.news/technology/methanesat-edf-satellite-gosat

"It's not as if we have to find the big #CO2 emitters; we already know where they are. Unlike #methane, which is fugitive - it shows up in places and at times you don't necessarily expect - we know where the large #PowerPlants 🏭 are in the world; we know where the aluminium smelters are. So, this is more about being able to verify 🛰️ #emissions." https://www.bbc.com/news/science-environment-64473574

General info by #NASA :
https://climate.nasa.gov
https://climate.nasa.gov/vital-signs/carbon-dioxide

#ESA on #GHGSat 🛰️ :
https://earth.esa.int/eogateway/news/how-scientists-use-space-data-to-help-advance-the-energy-transition

#Statistics 📊 by #OurWorldInData https://ourworldindata.org/co2-emissions

#Satellites #SpaceScience

#GHGSat - an eye in the sky for monitoring both methane and CO2 sources - is going to be a game changer in global #emissions reduction 👍
https://www.axios.com/2023/11/13/environment-co2-pollution-satellite

Pinpointing Carbon Emissions Like Never Before: World’s First CO2 Monitoring Satellite Is Now in Orbit
#Tech #CO2 #GHGEmissions #GHGs #GHGSat #Vanguard
#CarbonTracking #GHGSatVanguard #EmissionMonitoring #ClimateAction #CO2Data #SatelliteTech #Orbit
https://the-14.com/pinpointing-carbon-emissions-like-never-before-worlds-first-co2-monitoring-satellite-is-now-in-orbit/

#euronews:
"
Neuer Satellit wird erstmals C02-Emissionen der größten Umweltverschmutzer aus dem Weltraum verfolgen
"
https://de.euronews.com/green/2023/11/13/neuer-satellit-wird-erstmals-c02-emissionen-der-grossten-umweltverschmutzer-aus-dem-weltra

13.11.2023

#CO2 #GHGSat #Kanada #Klimakrise #Klimawandel #Kohlendioxid #Raumfahrt #Satelliten #Treibhausgas #Vanguard

Tales from the Fight Against #ClimateChange: Keeping People Honest on #MethaneEmissions - *CATALYST* calls on #methanedetection #satellite experts to help secure a #methanereduction treaty.