Dominic Manchee @dpmanchee.bsky.social · 18hIf I had one recommendation for the authorities, inc the Hellenic National Meteorological Service, there needs to be provision of weather radar for locals and tourists alike. If you look on platforms like Windy dot com, mainland Greece shows no data, and Western Crete isn't covered at all. 010
Dominic Manchee @dpmanchee.bsky.social · 18hTo understand the true scale of the storm and its impact on the ocean surface I took a look at the sea surface temperature anomaly before and after the storm. This from @copernicusmarine.bsky.social MyOcean Portal. Upwelling, heat extraction to fuel storm. Across a very large area 🤯 100
Dominic Manchee @dpmanchee.bsky.social · 18hThis is what the satellite infrared imagery looked like on Oct 3rd at 1:55 in the morning - very deep cold clouds across whole of the island. 100
Dominic Manchee @dpmanchee.bsky.social · 18hSatellite captured a lot of the dynamics, though there was not much #Copernicus #Sentinel1 coverage during peak of the storm. This from @oceandatalab.bsky.social shows some of the wind field dynamics detected by SAR and altimeters odl.bzh/ieiRjDj3 100
Dominic Manchee @dpmanchee.bsky.social · 18hRecent storm in Crete was very intense. a) Why was system so long lived ? High pressure over Central Europe, blocking pattern, ... what role did El Nino play ? b) How well did @ecmwf.int forecasts perform ? @metoffice.gov.uk @ecmwf.int @copernicusecmwf.bsky.social @copernicusmarine.bsky.social 110
Dominic Manchee @dpmanchee.bsky.social · 14/09/2026BBC article says a new report proposes "10 priority transitions, ranging from reducing black-carbon emissions and expanding glacier monitoring to improving disaster early-warning systems and changing the way tourism is developed in the mountains." Read it here www.systemiq.earth/prosperous-a... 011
Dominic Manchee @dpmanchee.bsky.social · 13/09/2026Rather useful update from the MS SysInternals team ... an update to ZoomIt utility has just dropped. For all those who want to capture info currently displayed, or just want to zoom into the finer detail. Yes, you can even draw onto screen with a pen. learn.microsoft.com/en-gb/sysint... 000
Dominic Manchee @dpmanchee.bsky.social · 12/09/2026Yes, there is systematic data collection by 🇪🇺 #Copernicus programme. Data is not very high resolution. And optical satellites can not see through clouds. Nepal and the Himalayas more widely have some high mountains, and steep sided valleys. Due to how SAR 🛰️ acquire data, some areas are in shadow. 000
Dominic Manchee @dpmanchee.bsky.social · 11/09/2026By now we've all heard of the 'Gulf of America'. Should the oil price rocketing since Feb 2026 be called the 'Trump Line' ? How much has this contributed to core inflation across the globe ? tradingeconomics.com/commodity/cr... 100
Dominic Manchee @dpmanchee.bsky.social · 11/09/2026@theguardian.com @channel4news.bsky.social Why are people happy to pay the 15-20% 'service charge' that is applied to UK AirBnB and Booking dot com accommodation bookings, yet get outraged when the government wants to bring in a nominal tourist tax ? We pay tourist taxes when we holiday in EU. 020
Dominic Manchee @dpmanchee.bsky.social · 09/09/2026On Sept 8th 2026 #Copernicus #Sentinel2 acquired clearer post event scenes over the Langtang Glacier in Nepal. The extent of devastation, runup, and debris flow splatter up the valleys, is now a lot clearer. Imagery via Copernicus Browser. @davepetley.bsky.social @drgeoffsmith.bsky.social 042
Dominic Manchee @dpmanchee.bsky.social · 09/09/2026Think about how much US National Science Foundation (NSF) has contributed to fundamental science over the years. www.nsf.gov/funding/oppo... Now consider what will happen in the future with small number of grants and less money. Trump's actions will ensure China catch up, and become leaders. 020
Dominic Manchee @dpmanchee.bsky.social · 08/09/2026The EU set out it's Skills Strategy back in 2016, since then a number of Blueprint Alliances have started, employment-social-affairs.ec.europa.eu/policies-and... As the UK left the EU we're not part of these. Successive UK Governments have been well behind the curve. 001
Dominic Manchee @dpmanchee.bsky.social · 05/09/2026Langtang #Sentinel1 pixel offset tracking using VH data : ↙️ May 13th, June 6th, Aug 12th, Aug 24th : highlights one key bulleye, just to the right of landslide failure. Need better optical imagery to resolve. ↘️ June 6th, Aug 12th, Aug 24th. Widespread surge across whole of central glacier. 110
Dominic Manchee @dpmanchee.bsky.social · 04/09/2026How to use 'timelapse' SAR to help explore dynamics. For #S1 I've chosen dates that had same path, frame, and then used a virtual raster to map in VH channel info. Max/min on bands to look at fracturing properties (-26dB, -11 dB). Red : June 6th Green : Aug 12th Red : Aug 24th AI summary ↘️ Hmm. 120
Dominic Manchee @dpmanchee.bsky.social · 04/09/2026Here is an animation of the #Copernicus #Sentinel2 scenes for 12th Aug 2026 and 24th Aug 2026. With the imagery rotated looking onto glacier. It's clear that thaw process was well under way on the glacier tongue on 24th. Small rockfall can be seen around area that failed. @iceybethan.bsky.social 100
Dominic Manchee @dpmanchee.bsky.social · 04/09/2026@dlr-en.bsky.social Hi, EOWEB GeoPortal shows that TerraSAR-X data is now being acquired over the area impacted by the Nepal landslide. Will these data be processed, terrain corrected and be made available for public download ? Will EnMAP 🛰️ be tasked to find out more on exposed bedrock lithology ? 000
Dominic Manchee @dpmanchee.bsky.social · 04/09/2026Bluesky has mangled the video - here are the two Copernicus #Sentinel2 scenes in question. 110
Dominic Manchee @dpmanchee.bsky.social · 04/09/2026Timelapse of snow melt and thaw from #Copernicus #Sentinel2. Early Aug appears to be a key period - it looks like the crevasses are fracturing and getting wider between 12th Aug and 24th Aug. What would be really useful is to have more @planet.com or Vantor imagery covering cloud free days in Aug. 120
Dominic Manchee @dpmanchee.bsky.social · 04/09/2026Could SfM type techniques be used on this to generate a post event DSM ? The challenge is the pre-event DEM. Radar suffers from layover. And even the NASA High Mountain Atlas 8m No Fill DEM 👇(derived from optical imagery) can't see under an over hang. Gap filling algorithms were used to correct. 210
Dominic Manchee @dpmanchee.bsky.social · 03/09/2026@nsidc.bsky.social Hi, I'm just looking at the NASA 'High Mountain Atlas 90m Glacier Surface Melt/Freeze Phenology from SAR' products nsidc.org/data/hma_gsm... The file size for 2020 is different to all the others, and data appears cropped. What caused this ? Failure of one of the #Sentinel1 🛰️ ? 100
Dominic Manchee @dpmanchee.bsky.social · 03/09/2026In @planet.com Disaster Data Pelican imagery from 1st Sept 2026 (Id : 20260901_050632_98_300b) there are what look like newly emplaced boulders - one at approx 28.3297625, 85.4242752 is in excess of 22 meters. The forces to move that must have be 🤯 @clashgeohazards.bsky.social 110
Dominic Manchee @dpmanchee.bsky.social · 03/09/2026I've been looking at #Copernicus #Sentinel1 SLC Burst data available via @ak-satellite.bsky.social. Processed w/ burst2safe utility, @esa.int ESA SNAP software, and QGIS. 3D visualisation using 19th Aug data. VHR SAR will hint at new crevasses. L-Band may show changes close to bedrock interface. 000
Dominic Manchee @dpmanchee.bsky.social · 03/09/2026Latest temp data I've seen up on the Story Map via @clashgeohazards.bsky.social - at 2500m. storymaps.arcgis.com/stories/f2b2... Really need to add Dr Hamish Pritchard's @bas.ac.uk data from 5100 m into the mix. Also need better data on glacier changes, say w/ VHR SAR - difficult w/ #Sentinel1. 100
Dominic Manchee @dpmanchee.bsky.social · 02/09/2026The Landsat 9 acquisition on 26th Aug 2026 shows skin temperature on the dust covered glacier of 1C. Not good. Scene Id : LC09_L2SP_141040_20260826_20260827_02_T1 This from ESRI Landsat Explorer App livingatlas.arcgis.com/landsatexplo... 010
Dominic Manchee @dpmanchee.bsky.social · 02/09/2026Dr. Hamish Pritchard data from sensors at elevations 5,100m only 10 km away saw highest temperatures of the year. I've draped satellite image over COP30 DEM to see what areas of glacier this would affect. Whole area with red. Gulps. How quickly could high temps change stresses in glacier ? Days ? 210
Dominic Manchee @dpmanchee.bsky.social · 02/09/2026In 2025 the UK National Commission for UNESCO (UKNC) launched a scientific report "Glaciers and Ice Sheets in a Warming World: Impacts and Outcomes", including a chapter on “Will our mountains lose their snow and ice? And does it matter if they do?” unesco.org.uk/resources/gl... 000
Dominic Manchee @dpmanchee.bsky.social · 02/09/2026@ericjfielding.bsky.social @gfun.earth Article says Zhejiang Liu, a PhD student at Chang'an University, thinks NISAR pixel offset tracking spotted precursor movement. Hmm. Doesn't say if he was looking at L-Band or S. And 28th Aug QP doesn't have dithering. www.timesnownews.com/india/isros-... 130
Dominic Manchee @dpmanchee.bsky.social · 02/09/2026Just found the NISAR Observation Plan App ... next Cycle A (DP) descending acquisition over the region on 9th Sept 2026. But for 12 day GOFF production if this is paired with QP on 28th Aug 2026 then there will still be pixel correlation issues and banding. experience.arcgis.com/experience/6... 110
Dominic Manchee @dpmanchee.bsky.social · 02/09/2026Just looking at the metadata for the RSLC acquisition on 28th Aug 2026 ... it says it is not dithered, which explains the banding. I'd assumed that a GOFF product would say it is dithered only if both SLCs it is derived from are dithered. 100
Dominic Manchee @dpmanchee.bsky.social · 01/09/2026Just checked GOFF product metadata, it says it is dithered. Do any other NISAR L2/L3 products also have this banding ? How to work around ? 100
Dominic Manchee @dpmanchee.bsky.social · 01/09/2026Nepal flood : some Qs for the NISAR experts. a) How does NISAR cope w/ Nepal terrain ? Depends on geometry. b) Did GOFF products capture destruction ? Maybe c) How are GOFF products mosaicked ? d) Recent GOFF detected changes. But what to make of them ? @ericjfielding.bsky.social @gfun.earth 110
Dominic Manchee @dpmanchee.bsky.social · 31/08/2026Cool features, like Elevation Profile. Which DEM is GeoLibre using ? Can user specify their own ? 100
Dominic Manchee @dpmanchee.bsky.social · 31/08/2026Good video. Landslide/glacier collapse is 13km to east of former location of border post. There is no Vantor pre-event imagery for glacier. There is Planet pre+post event imagery. BTW, your STAC Browser web app is great, I've been using it w/ #Planet Disaster catalogs opengeos.org/geolibre-sta... 110
Dominic Manchee @dpmanchee.bsky.social · 31/08/2026Imagery on Google Earth Pro - 3D looking directly at glacier. ↙️- Nov 2021 ↘️- Jan 2026 Final image is #Sentinel2 1C image from Aug 12th 2026 - rotated to provide similar perspective. Crevasse may seem bigger just due to shadows. 000
Dominic Manchee @dpmanchee.bsky.social · 31/08/2026BSky has mangled the frames, so here are the two #Copernicus #Sentinel2 1C scenes at the end of the movie. 12th Sept 2025 vs 12th Aug 2026 Imagery via Copernicus Browser. 000
Dominic Manchee @dpmanchee.bsky.social · 31/08/2026Vegetation has been growing close to where glacier failed over the last few years. A large crevasse does appear on the glacier since Sept 2025 - providing an alternative path for meltwater, contributing to basal melt. And sliding of the rockface ? Has there been a change in glacier velocity ? 200
Dominic Manchee @dpmanchee.bsky.social · 31/08/2026@clashgeohazards.bsky.social The drone videos posted by Xiaohongshu / @HeyMu309008122 could help refine analysis of the event sequence, including seismic signals. First thoughts of experts bsky.app/profile/gerg... My non-expert annotations of some frames below. 000
Dominic Manchee @dpmanchee.bsky.social · 30/08/2026It says a lot about the Trump regime that the NASA Disaster Program hasn't been activated for the Nepal landslide and flood. disasters-nasa.hub.arcgis.com 052
Dominic Manchee @dpmanchee.bsky.social · 30/08/2026Later on in the longer movie from Xiaohongshu / @HeyMu309008122 we have this frame, with a larger ice fall now visible. Suggesting a multi-stage event ? Hopefully they'll published a fuller unedited sequence. 010
Dominic Manchee @dpmanchee.bsky.social · 29/08/2026My annotation of another part of the video sequence from Xiaohongshu / @HeyMu309008122. 1. Landslide has already reached LIA glacier 2. Debris flow ongoing 3. No evidence of rockfall from peak 4. Glacier appears intact (for now) 5. Start of ice collapse from glacier @davepetley.bsky.social 020
Dominic Manchee @dpmanchee.bsky.social · 29/08/2026This is the original BBC article posted yes'y. 110
Dominic Manchee @dpmanchee.bsky.social · 29/08/2026Annotated frame from one of HeyMu309008122 videos. And Google Earth imagery from a similar perspective. IMO red circle shows landslide hitting side wall of LIA glacier I think the complex show in the foreground is at 28.36162500, 85.40470833, as dome and pylons visible in Google Earth imagery. 110
Dominic Manchee @dpmanchee.bsky.social · 28/08/2026Have you seen videos from Xiaohongshu HeyMu309008122 ? They've been licensed by the BBC www.bbc.co.uk/news/live/cr... From what I can tell it shows Tsangbu Ri 🏔️ - which I've highlighted in white. Does the mountain peak outline match Google Earth imagery ? Can frames be enhanced to show glacier ? 000
Dominic Manchee @dpmanchee.bsky.social · 28/08/20261/ Does @planet.com imagery help resolve height of runup when debris flow hit the valley floor ? #Sentinel2 imagery and #Copernicus DEM suggest it's above the 3100m level. Clouds / dust / spray mask details. 2/ Depth of debris flow downstream ? Could VHR SAR imagery + DEM help resolve ? 100
Dominic Manchee @dpmanchee.bsky.social · 28/08/2026Landsat 9 Path 141 Row 040 and Path 141 Row 041 appear to overlap in the area impacted by the flood. What is difference in scan times between the two acquisitions ? Could changes between the two scenes highlight flood wave progression ? 100
Dominic Manchee @dpmanchee.bsky.social · 28/08/2026It would add to the article if the Reuters team also gave some insight into the scale of the flood. This is one hydrograph shown on UK's ITV News the other day. There are many experts that research large scale flood events, inc Emeritus Professor Paul Carling of Southampton Uni. 000
Dominic Manchee @dpmanchee.bsky.social · 28/08/2026Good article - bit it doesn't show the full scale of devastation The Nepal glacial collapse and flood has destroyed many villages - some now under meters of mud. Just one #Copernicus #Sentinel2 timelapse from around one of the affected areas. This is the region around Betrawoti Bazaar. 110
Dominic Manchee @dpmanchee.bsky.social · 28/08/2026This is what the region around Betrawoti Bazaar, Nepal looked like prior to the glacial collapse and flood. Imagery via Google Maps. 010