Discover and read the best of Twitter Threads about #remotesensing

Most recents (22)

After that inspiring panel of women in Data Science, I want to give a spotlight and appreciation round to all those #RLadies that are active on #rspatial and that have definitely inspired me to also try and be part of the community 🤩
I invite you all to give a shoutout to those amazing #RSpatialLadies that have crossed your path!
Read 10 tweets
¿Cuál es la relación entre longitud de onda, frecuencia, alcance de la onda o tamaño del objeto a detectar? Estos conceptos son claves en la teledetección. 📡🐜☁️💧💡⏰ #remotesensing
Abro 🧵
Como ya sabréis, la longitud de onda (lambda) es la distancia que recorre una perturbación periódica (una onda) que se propaga por un medio en un ciclo o repetición. La frecuencia (f) es la medida del nº de ciclos o repeticiones de la onda por unidad de tiempo. Su relación es 👀 Relación entre longitud de onda y frecuencia de la misma.
Siendo v la velocidad de la onda en el medio. Si la onda fuese e.m. 💡, v=300.000 km/s. También sabréis, las ondas más largas (f⬇️) se propagan a mayores distancias que las ondas más cortas (f ⬆️). ¿Por qué? Porque las ondas más cortas (f ⬆️) se atenúan más que las ondas largas.
Read 8 tweets
Daily Bookmarks to GAVNet 11/28/2021 greeneracresvaluenetwork.wordpress.com/2021/11/28/dai…
Smallpox vials found at Montgomery County lab, but ‘there is no basis for being worried’

inquirer.com/news/pennsylva…

#smallpox #laboratories #InfectionRisk
Satellites offer new ways to study ecosystems—and maybe even save them

science.org/content/articl…

#RemoteSensing #SatelliteTechnology #EcosystemsHealth #CorrectiveAction
Read 13 tweets
Come be my colleague!

@Uni_Newcastle #EarthScience is hiring!

We have three, ongoing Level B roles open today:
1. #Coastal & #Ocean #Geoscience
2. #SpatialInformationScience (#GIS)
3. #Hydrogeology

Applications due 8 Nov.

#AcademicChatter #AcademicTwitter [🧵1/5]
All three roles are mixed #teaching-#research roles based at Callaghan Campus in #Newcastle.

I'd be happy to chat to anyone who's interested about what it's like to work at UON/live in Newcastle or feel free to ask questions here.

Please share far and wide!
[2/5]
Read 5 tweets
Another open-source geospatial analysis platform is coming soon. Exciting time 🤩📣👇

The ESA-NASA Joint Multi-Mission Algorithm and Analysis Platform (MAAP)
scimaap.net

#opensource #geospatial #gischat #remotesensing #nasa #esa #geopython
Read 3 tweets
The best-available-pixel (BAP) tool you have been waiting for! Implemented on #GoogleEarthEngine (#GEE). #Landsat

In #GEEBAP can tune composite parameters, create a #timeseries, set area of interest, AND download surface reflectance outcomes!

Try it out:
code.earthengine.google.com/e27240a92ecf64…
#GEEBAP documentation:
github.com/saveriofrancin…
#OpenScience support on best available pixel compositing:
White et al. 2014, tandfonline.com/doi/full/10.10…
Griffiths et al. 2013, ieeexplore.ieee.org/document/64153…
See White et al. for guidance on parameter selection related to phenomena of interest
Read 3 tweets
#Google
I am very excited to announce that @MohsenAlif & I have won the Google Research Award!
Our project entitled "Is Economics From Afar Domain Generalizable?" falls under the Machine Perception category.
We are the only winners from Pakistan!
research.google/outreach/resea… Google Research Scholar Award (2021) winners from Pakistan
It's a good day for #Pakistan and a fantastic one for us.
Both @MohsenAlif & I are at @ITUPunjab which is where we got the chance to do this multidisciplinary & cutting edge work. It's not everyday when labs in computer vision & #Economics come together to create impact.
According to Google, The Research Scholar Program supports early-career faculty who are doing impactful research in fields relevant to Google and is intended to help to develop new collaborations and encourage long term relationships.
Read 10 tweets
It’s been a while since our last post, and we sure have been busy. Both the #Discovery and #GoodFortune teams have been on the water many days scanning (i.e., #remotesensing), SeaSearching, diving, and identifying the trail of #artifacts leading away from the #RingSite in #Area2
$SFRX is also actively working with the State #DivisionofHistoricalResources (DHR) to confirm that our previously disclosed #RingSite is, in fact, a Shipwreck Site so that we can continue our work there in earnest.
Check out the pictures of the three deadeye rings lying next to each other on the #RingSite. Dozens of #artifacts are on the surface and buried in that area, according to our disclosure to DHR. It’s very exciting!
Read 7 tweets
#InPlainSight!
#APlenaVista! [Español en el 🧵]

Interactive #LightPollution Map (lightpollutionmap.info) allows us to track the amount of light every year captured by satellites.

Maps are created using average monthly light emissions.

2 shocking finds in #Ecuador

1/ [Eng] World map showing the light...
#OverFishing is a highly debated topic.
What happens in #OpenWaters is difficult to monitor.
Yet, here you clearly see the #LightPollution (likely many⛴️) JUST outside the #TerritorialWaters of #Ecuador and #Peru in 2019

Just a reminder: THESE ARE MONTHLY AVERAGES!

2/ [Eng] Picture showing the light p...
Here is a compilation GIF from 2012 through June 2020

#OverFishing

3/ [Eng]
Read 12 tweets
1/3 Interested in #lidar and enhanced #forestinventory? Here's everything you need to develop practical hands-on training materials & lab excercises, benchmark your algorithms, develop innovative solutions for the #forest sector, and support your research #CFSEFI #PRFSS #EOchat
2/3 Included are #lidar data, contemporaneous field reference data, derived lidar predictors (point cloud metrics), EFI outputs (prediction rasters for volume, biomass, basal area, etc.), helpful guides, & software tools. All part of our #remotesensing #supersite #PRFSS #OpenData
3/3
#Lidar: bit.ly/3b8pAgL
Field plots: bit.ly/3poQKFa
Predictors (metrics): bit.ly/2Zh4veE
EFI rasters: bit.ly/3jTTgm4
How-to guides: bit.ly/2S3IBFW; bit.ly/2Sc5ffD
Software tools: bit.ly/2LHA7ae
#OpenData #PRFSS
Read 3 tweets
#geemap new feature: changing layer visualization interactively with a GUI. This is a very challenging implementation with many hours of work and >1000 lines of code.

App: gishub.org/geemap-vis

#EarthEngine #GIS #remotesensing #python #jupyter #mapping #ipyleaflet #dataviz
Just added a new option for turning all layers on/off.
Read 3 tweets
Our paper on flood detection in SAR/optical time series is now available in the proceedings of the ISPRS 2020 Congress: …gramm-remote-sens-spatial-inf-sci.net/XLIII-B2-2020/…

This work led by our postdoc Clément Rambour shows that SAR can significantly improve flood detection using #remotesensing data. Image
We will release soon a Sentinel-1/2 dataset of flood events time series with temporal ground truth, based on the work of @BenjaminBischke on his MediaEval dataset.

This is a joint work between @cedric_lab and @onera_fr (@blesa_ux, @EliseColin3).
And the dataset is out ! Freely available on Dataport : ieee-dataport.org/open-access/se…

Check it out if you're into flood detection and/or multimodal remote sensing. 🛰️🌧️

#opendata #remotesensing
Read 3 tweets
I am always nervous before each and every podcast interview.

Not because I am afraid of working/ learning in public but because want to be respectful of my guest's time and create content that will give the podcast audience value.

Here are the 10 most popular podcast episodes!
In this episode, @geomenke gives a fantastic introduction to #QGIS

mapscaping.com/blogs/the-maps…
Read 12 tweets
1/4⭐️#SAR_Star! Today we celebrate @Nat_Mora_ who is a @CONICETDialoga researcher at @3iaunsam & teaches at @unsamoficial & @Exactas_UBA. Give her a follow 👋& learn about her research 🧐 on landscape & plant 🍃#ecology in #floodplain #Wetlands🌎 of #Argentina🇦🇷. #WomeninSAR
2/4⭐️#SAR_Star! @Nat_Mora_ has a #Phd in #biology from @UBAonline @Exactas_UBA. She studied macrophytes at the #Paraná River #floodplain with #SAR and #PolSAR data. Here are some #Cband #results👇 #WomeninRemoteSensing #WomenInSTEM #SARisbeautiful #RADARSAT
3/4⭐️#SAR_Star! @Nat_Mora_ also analysed the #Paraná River #floodplain with #Lband #PalSAR and #Xband #CosmoSkyMed data. Besides her main research, she also used #SAR & #PolSAR on #coastalMarshes #oildetection #soilmoisture #WomeninSAR #SARisbeautiful
Read 4 tweets
📢 NEW PAPER! #PaperThread #SciComm

Master’s student @samherniman recently published an article about avian habitat suitability in Remote Sensing Applications: Society and Environment. Sam has written this thread summarizing his findings...

📖: doi.org/10.1016/j.rsas…
🧵:1/18
In general, when a habitat has more #birds, it also has more of all living things. In scientific terms, we say that birds are good surrogates or indicators of #biodiversity.

2/18
This is excellent, because counting birds is really easy. Many of them sing or call. So, we can do a field survey of birds in a habitat and use that number to find a relative count of all biodiversity.

more birdsong ≈ more birds ≈ more biodiversity

🦉🌲🐦🌳🦅
🐿️🪱🍂🍄🕷

3/18
Read 18 tweets
#AatmaNirbharBharatAbhiyan
Based on 👇

Land,Labour,Liquidity&Laws that are not isolationist but inclusive

Ease of Doing Business

DBT,JanDhan,Aadhar, Micro Insurance,Ujjwala Yojana, Ayushman Bharat, PM Awaas Yojana,PM FasalBima Yojana,Krishi Sinchai,Swachh Bharat--Key Landmarks
GST,IBC&PSU Bank Recapitalisation in last 6 yrs,have been big reforms

52606Cr given via #DBT to 41Cr #JanDhan holders

Free wheat&rice to 69Cr ration card holders

18000Cr tax refunds given

Free cylinders to 8Cr #Ujjwala holders

#20lakhcrores #COVIDー19
#atmanirbharbharat
Project DevelopmentCells,working for Promotion of Champion Sectors,in States

#MakeInIndia&Upgradation of Industrial Infra,a success&more will be done to #Decongest economy

3376 SEZs&IndustrialParks with 5 lakhhectares,to be ranked& mapped,in terms of readiness for competition
Read 20 tweets
🟠 #Wildfire🔥 south of #Novospassk, #AmurOblast, #Russia🇷🇺 (Lat: 49.5410, Lng: 129.6886) close to China 7 May 2020 Enh. nat. col. + IR overlay #Copernicus #Sentinel-2🛰️ Full-size ➡️ flic.kr/p/2iYzoFM #RemoteSensing #scicomm #OpenData Image is about 13 kilometers wide #Wildfire🔥 south of #Novospassk, #AmurOblast, #Russia🇷🇺 (Lat: 49.5410, Lng: 129.6886) 7 May 2020 Copernicus/Pierre Markuse
Parts of this #wildfire🔥 are burning so intensely, they are visible in a normal RGB (4-3-2) image, as can be seen here. Intensely burning wildfire in Russia Copernicus/Pierre Markuse
Read 3 tweets
Hello. Myself, @Yaolri & @iayongwa are monitoring the growing situation in south west Cameroon.

Lots of unverified footage emerging of burnt villages and people dying in the streets. If you see something, DM one of us (our DMs are open and we will communicate through Signal).
This is one of the videos that was released today. It was filmed in Mautu. The bikes you see at the start of the footage were located exactly here on Mautu's main road: goo.gl/maps/CmqUZr4WR…
Just to show what we are doing with the footage - we're starting by investigating each individual scene and mapping them out. We're looking for evidence of who is responsible for this. The scenes here are geolocated to here: goo.gl/maps/CmqUZr4WR… in Mautu, #Cameroon. ImageImageImage
Read 9 tweets
I get a lot of questions about my @locatepress book Discover QGIS 3.x. There is a lot - it's 402 pages with 32 lab exercises. To begin 2020 I'll be launching the #30DaysofDiscoverQGIS3x thread highlighting things you can learn/teach with this workbook! Stay tuned! #gischat #QGIS
@locatepress This workbook has 5 sections: 1) Intro to Geospatial Technology, 2) Spatial Analysis, 3) Data Acquisition and Mgmt, 4) Cartography and 5) Advanced Data Visualization. It can be purchased as an ebook or paperback at locatepress.com/dq3 #30DaysofDiscoverQGIS3x
@locatepress There is a New Years sliding scale sale on all ebooks at locatepress.com. Starting today the discount will be 50% using the code: newyears

The discount steps down each day by 5%. Get in early!

Sale starts midnight EST Dec 30.

#30DaysofDiscoverQGIS3x
Read 34 tweets
🔴(Thread) How to explore the #NSWbushfires 🔥 yourself? Use the #EOBrowser to search recent images in the affected areas. When you've found a #bushfire, export a true color image such as this one. ➡️apps.sentinel-hub.com/eo-browser/?la… #NSWbushfires #RemoteSensing #OpenData #scicomm 1/6
Once you have done that, you can use the False color (Urban) visualization to go further, peek through the smoke and detect hot spots with possible active fires like in this image here. It also makes the burn scar more visible. ➡️ apps.sentinel-hub.com/eo-browser/?la… 2/6
Additionally you can then use the SWIR visualization to even better show the burned areas, which show up in reddish tones. Take a look at this image. ➡️ apps.sentinel-hub.com/eo-browser/?la… 3/6
Read 7 tweets
Dilemma: I can't stop myself from having mixes feelings about posts like these. On the one hand, great to advocate the power of #RemoteSensing and open datasets like @CopernicusEU. On the other hand, people expect this kind of quality for the South of Ghana as well. 1/
Most remotesensing marketing stuff is about:
* Moving gletsjers
* Wildfires
* Agriculture in the Noordoostpolder
* Crazy stuff in desert environments (no clouds)

So, great, but let's also show where the challenges are. And how we can help each other overcome those. 2/
Note to self: don't persist in being a bitter asshole, come up with some upsides and positive examples.

Self: well noted, working on it. /3

(Not really sure how these Twitter threads work ...)
Read 7 tweets
If you are using satellite imagery in your coverage of conflict areas, I encourage you to use @sentinel_hub imagery with custom scripts (available on @github - github.com/sentinel-hub/c…). For example, take a look at this village in north Nigeria ( 12.050973, 13.995915). Thread 👇 Image
On @googleearth, the fires in the village @ 12.050973, 13.995915 on February 8, 2018, are barely noticeable - but we can easily identify this by customising the way we look at the earth. goo.gl/maps/72khpC9HN… Image
Using Sentinel-2 imagery through @sentinel_hub, we can see the same area located from @googleearth. There is a large repository of custom scripts that we can use to customize @sentinel_hub's view on @github: github.com/sentinel-hub/c… Image
Read 8 tweets

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