#MODIS

MINIMARKET ONLINE LTDminimarket@mstdn.social
2025-05-17

Hardline Republicans in the U.S. House of Representatives blocked President Donald Trump's sweeping tax bill on Friday over concerns it did not do enough to cut spending hours before Moody's stripped the federal government of its once top-tier credit rating. Moody's, which was the last of the three major ratings agencies to rate U.S. AAA, warned that the nation's debt burden could reach 134% of gross domestic product by 2035, compared with 98% in 2024. #us #usa #news #America #trump #modis

MINIMARKET ONLINE LTDminimarket@mastodon.world
2025-05-17

Hardline Republicans in the U.S. House of Representatives blocked President Donald Trump's sweeping tax bill on Friday over concerns it did not do enough to cut spending hours before Moody's stripped the federal government of its once top-tier credit rating. Moody's, which was the last of the three major ratings agencies to rate U.S. AAA, warned that the nation's debt burden could reach 134% of gross domestic product by 2035, compared with 98% in 2024. #us #usa #news #America #trump #modis

2025-05-07

Mithilfe von #Satellitendaten erkennt ein neues Verfahren das winzige #Zooplankton Calanus finmarchicus, das für Nordatlantische #Glattwale lebenswichtig ist.

Die Methode hilft, Fressgebiete im Golf von Maine vorherzusagen. Das könnte Kollisionen mit Schiffen und Verwicklungen in Fischereigeräte reduzieren. Die Daten stammen von NASA-Instrumenten wie #MODIS und künftig #PACE.

dx.doi.org/10.3389/fmars.2025.

#Weltnaturschutz #Meeresforschung #Klimawandel #NASA #Ozeanbeobachtung #Wale #Artenschutz

"Satellite-based evidence of recent decline in global forest recovery rate from tree mortality events" by Yuchao Yan et al 2025.
Fascinating and educational. All the more for us in Germany and Finland, and likely other Europeans, whose forests morphed from CO2 sink to source. The study ends with 2020 data tho, Europe with 2018.
Only non-fire mortality events were analyzed.
I learned how recovery after a drought-driven forest mortality event depends on🌡️💧during recovery; not so much the event severity.
nature.com/articles/s41477-025
Free e-pdf provided by one of the authors:
rdcu.be/eigV4

Don't know about you but to me, a paper is particularly "good" if I'm left with a host of new pressing questions. "Why did they..? Was it maybe ..? What if it had been...?"

For a recovery phase, they differentiate between recovery of the canopy greening and recovery of water content in the canopy. Both are based on satellite obs only. And if a satellite image suggests greening is recovered to pre-mortality level, it might not actually be re-greening from recovered old or new young trees but could be merely dense shrubbery. The Greening parameter is often used to glean carbon stock. Shrubs have less biomass=less carbon than trees.
The water content in the canopy then somehow helps to clarify the actual recovery state. How? 🤷‍♀️

Water content in canopy always takes far longer to recover than re-greening.
Longer = years and years longer.
Always = in the 1980s as well. Which I take as: that's the normal baseline behaviour for a given biome, a given latitude zone, a given climate zone, a given elevation, a given human intervention etc.

Supplementary Fig. 5. c and d show numbers for North America and Tropics static-content.springer.com/es .
Recovery Time in years for water in canopy in North America
in the 1990s took 2 - 12, average 6.
in the 2000s took 2 - 18, average 9.

in the Tropics:
in the 1990s took 2 - 12, average 6.
in the 2000s took 2 - 11, average 7.

Europe is missing an extra whiskers plot. Maybe they saved this for their next paper. But European events are included up to 2018, if I got it right.

With all the factors to be considered, and bias in numbers of events in any given factor, making recovery comparable across regions, across biomes, across climate zones, a global average doesn't seem very useful.
However, here are the global numbers from Figure 1d for
Recovery time RT for water in canopy. In the 1980s RT was between 2 and 15, average 8, median 6 .
In the 1990s, RT was 2 - 22, average 8, median 6.
In the 2000s, RT was 2 - 20, average 9, median 9 years.

Am curious wrt the missing potential cause for the greatly reduced RecoveryTime in the 2010s in Fig.1d. Is that an artefact of the shortened observation time for these 10 most recent mortality yrs?
And Greening recovered astonishingly quickly in the 2010s. is it the high CO2 fertilisation or a regional bias from the events in this period?

#climate #ecosystem #drought #forest #satellite #MODIS #ForestMortality

O=C=Otuxom
2025-01-10

Due to mandatory evacuation orders at the Jet Propulsion Laboratory () in , , processing of certain visualization products have been halted. This includes visualization products from , , , sea surface currents, and some Terra and Aqua Sea Surface Temperature products.

2024-11-27

Next month at .

A multi-scale study assessing snow albedo variability in mountain terrain.

Using satellite data, AVIRIS-NG airborne spectroscopy, and ground-based measurements, they aim to improve the characterization of snow surface properties and albedo in complex environments, addressing limitations in coarse observations.

🗓️🔗: bit.ly/AGU24_C23C14

Ragnar Heiðar ÞrastarsonRagnarHeidar
2024-11-16

Four of my favorite images of Jan Mayen with a von Kármán vortex streets this year. This phenomenon forms when a steady flow of becomes separated by an obstacle (like a huge stratovolcano in the middle of the ocean) and sheds vortices. Named after the engineer and fluid dynamicist Theodore von Kármán.

Satellite image of Jan Mayen with clouds forming von Kármán vortex street.Satellite image of Jan Mayen with clouds forming von Kármán vortex street.Satellite image of Jan Mayen with clouds forming von Kármán vortex street.Satellite image of Jan Mayen with clouds forming von Kármán vortex street.
Nicolas MoirouxNMoiroux@ecoevo.social
2024-11-14

🚀 New Paper Alert! Introducing **modisfast**, an #RStats package for quick and easy downloads of key #EarthObservation (EO) data 🌍📈. Access #MODIS, VIIRS, and GPM products with custom filters and parallelized downloads ! @ptaconet.bsky.social

📄 buff.ly/3Cvn8Ta

#DataScience

2024-11-08

[lance-modis] Unavailability of SNPP L2+ EDR data products until further notice -- Update

#satellites #modis #viirs #RemoteImaging

Updated November 08, 2024:
The S-NPP's onboard geolocation system was reset on Wed. Nov. 6 around 17:17 UTC. The Calibration/Validation teams have finished verifying S-NPP's data products and found them to be suitable for operations. Given this, MODAPS LANCE has decided to resume S-NPP NRT processing, starting tomorrow, November 9 (Day 314). The STD processing is also expected to be resumed either later today or early next week.
YouStormyoustorm
2024-11-08

The eruption cloud of 🌋 seen today by the Aqua 🛰️polar orbiting satellite. The thick plume at the time of this image is about 400 km long

The Secret Life Of Plants🌱Blickwinkel@digitalcourage.social
2024-10-29

Laut Beamtem steckt ein Mitglied von #Modis innerem Zirkel hinter einem kanadischen Kriminalkomplott | CBC
cbc.ca/news/politics/india-mur
#Hindunationalismus #hindutva #india #canada

2024-10-08

Now the interactive application
Daytime and nighttime temperature between 2001 and 2023, we compare the behavior with the monthly averages and see the anomalies
corta.es/90xj6
#shinyapp #r #rstudio #Iruña #Pamplona #Modis #Climatechange #dataviz

2024-10-04

Hurricane Helene has "significantly impacted operations at NOAA National Centers for Environmental Information (NCEI)." -- now impacting satellite operations for LANCE-MODIS.
#HurricaneHelene #NCEI #NOAA #SatelliteImaging #MODIS

Dear LANCE-MODIS Users:
Hurricane Helene has significantly impacted operations at NOAA National Centers for Environmental Information (NCEI). The NCEI generates and provides Optimum Interpolation Sea Surface Temperature (OISST), an ancillary product which is used as an input for MODIS cloud products (MxD06, MxD35) from NRT and Standard streams. This OISST product has not been produced by NCEI since September 27 (the last file was received was on September 26) as their systems are still down. The Standard and NRT Cloud products are being generated, but by using the last available OISST data.  We do not have any estimate on when the production of this data will resume, and till that happens, the MODIS and VIIRS cloud retrieval algorithms will continue to use the last available data, with potential impact on cloud retrieval quality.

We will provide more information and updates as these become available.

Regards,
lance-modis Users Support
2024-09-28

Hmm, satellite hotspots in Southern Lebanon over the last 7 days 👀 #Lebanon #RemoteImaging #VIIRS #MODIS

Many hotspots over Southern Lebanon, indicating fires
Adam Collinsm104
2024-09-12

MODIS imaging is so cool but also jaw-dropping. This datapoint indicates that the 1km by 1km pixel grid point was estimated to be radiating almost 500 MW of power along the perimeter of the Airport fire (near Los Angeles) today.

I've seen MODIS datapoints up to 3.2 GW, so, again to the jaw-dropping part, do 1km squares of wildfires occasionally produce nuclear power station levels of thermal emissions? Is that right?

MODIS data from a NASA satellite indicating that, along the perimeter of the Airport fire near Los Angeles, a grid point produced nearly 500 megawatts of detectable radiative power.

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