Login

Recent searches

No recent searches

Search options

Only available when logged in.
social.bund.de is one of the many independent Mastodon servers you can use to participate in the fediverse.
Dies ist der Mastodon-Server der Bundesbeauftragten für den Datenschutz und die Informationsfreiheit (BfDI).

Administered by:

Server stats:

100
active users

social.bund.de: AboutProfiles directoryPrivacy policy

Mastodon: AboutGet the appKeyboard shortcutsView source codev4.3.6

#Modeling

0 posts0 participants0 posts today
Public
MPI für Meteorologie

🚨 📢 #Job alert! 💼
Are you interested in #oceanography with a background in #physics, #mathematics,& data #visualization? 🌊 📊 We're opening a 3-year position for a doctoral #PhD candidate to work on the #ocean component of our #ICON #climate model. You'll be working w/ our "Complex #Modeling & Extreme #Computing" group under supervision of Nils Brüggemann & be a member of our #IMPRS doctoral program. 🎓 Check out the full ad & apply until April 20: jobs.mpimet.mpg.de/jobposting/
#hiring #sciencejobs

jobs.mpimet.mpg.dePhD | Doctoral Candidate (W-0037)
Public
💧🌏 Greg Cocks

A Site Selection Framework For Urban Power Substation At Micro-Scale Using Spatial Optimization Strategy And Geospatial Big Data
--
doi.org/10.1111/tgis.13093 <-- shared paper
--
“In this study, [they] model spatiotemporal heterogeneity and incorporate it into optimizing the location of substations. The optimized substation placement ensures electrical service coverage for over 99% of the area during peak power usage seasons, compared to the current coverage of 72%...”
#GIS #spatial #mapping #spatialanalysis #spatiotemporal #siting #demand #electricity #heterogeneity #substations #powertransmission #electricalpower #distrubition #service #city #urbanisation #extremeweather #model #modeling #parameters #factors #energycrisis #energy #urbanplanning #routing #outages #framework #UrbanPS #bigdata #AI #machinelearning #Pingxiang #Jiangxi #China #casestudy #coverage #utilisation #dynamic #load #loading #loadbalancing

Public
RashaKamel

"Climate change is causing the world's glaciers to disappear at an alarming rate. Scientists have been studying and modeling this process for years, but until now, no research group has specifically examined how glacier melt will affect glacier-fed streams and their ecosystems".

#glaciers #ecosystems #modeling #climatechange
phys.org/news/2025-03-glacier-

Phys.org · Glacier melt puts unique microbial ecosystems under threatBy Ecole Polytechnique Federale de Lausanne
Public
💧🌏 Greg Cocks

A Google-Backed… [Satellite] To [Help] Battle Wildfires Made It Into Orbit
--
techcrunch.com/2025/03/17/a-go <-- shared technical article
--
sites.research.google/gr/wildf <-- shared Google FireSat home page
--
youtu.be/pmQlXLaHT_Y?si=q3wM80 <-- shared video overview of FireSat
--
earthfirealliance.org/ <-- shared Earth Fire Alliance home page
--
[this post should not be considered an endorsement of this product]
#GIS #spatial #mapping #FireSat #monitoring #fire #wildfire #EarthFireAlliance #Google #satellite #remotesensing #earthobservation #detection #tracking #earlywarning #multispectral #infrared #spatialanalysis #spatiotemporal #risk #hazard #climatechange #extremeweather #impacts #humanimpacts #infrastructure #damage #AI #machinelearning #emergencyresponse #model #modeling
@Google @GoogleResearch @EarthFireAlliance @MuonSpace

Public
💧🌏 Greg Cocks

A Planetary Boundary For Geological Resources - Exploring The Limits Of Regional Water Availability
--
phys.org/news/2025-03-planetar <-- shared technical article
--
doi.org/10.1126/science.adk531 <-- shared paper
--
im-mining.com/2023/04/26/unite <-- shared industry article
--
#GIS #spatial #mapping #spatialanalysis #spatiotemporal #global #regional #water #hydrology #waterresources #watersecurity #mine #mining #processing #minerals #criticalmetals #energy #products #services #surfacewater #groundwater #naturalresources #resources #geology #ecosphere #technosphere #watermanagement #sustainability #sustainableuselimit #waterconsumption #industry #production #constraints #mineralproduction #economy #economics #model #modeling #coal #iron #copper #gold

Public
💧🌏 Greg Cocks

A Methodology For The Multitemporal Analysis Of Land Cover Changes And Urban Expansion Using Synthetic Aperture Radar (SAR) Imagery - A Case Study Of The Aburrá Valley In Colombia
--
doi.org/10.3390/rs17030554 <-- shared paper
--
#GIS #spatial #mapping #SyntheticApertureRadar #SAR #remotesensing #multitemporalanalysis #landcover #landcoverchange #clustering #kurtosis #fuzzylogic #kernelbasedmethod #machinelearning #spatialanalysis #spatiotemporal #geostatistics #model #modeling #AburráValley #Columbia #urban #urbanexpansion #population #growth #topography #monitoring #satellite #sentinel #valley #landuse #distribution #infrastructure #building #roads #naturalresources #environmental #conservation #monitoring #multitemporal

photo - looking down into Medellin, Aburrá Valley, Columbia from a surrounding high ground
annotated maps with imagery - Areas of analysis of the results by the SMA1 methodological route and kurtosis. (A). Central Park in Bello (B). Parques del Río Medellín (C). Arkadia Shopping center; (D). Peldar Plant (E). La García water supply reservoir (F). Conasfaltos dam (G). La Ayurá stream basin in Envigado (H). Central Park in Bello (I). Avenida Regional Norte (J). Vía Distribuidora Sur.
schematic / work flow - proposed methodology for analysis of zonal land cover changes
annonated maps - The Aburrá Valley (white line) between the valleys of the Magdalena and Cauca rivers. Data were acquired from ALOS PALSAR Terrain Corrected and data from IGAC.
Public
AG Klimatologie - SPACY

New Earth system #modeling paper published: iopscience.iop.org/article/10.

Moritz Adam and co-authors are benchmarking carbon dioxide removal #CDR through Sun-driven #co2 conversion.

Main takeaways:

▶️ Unwanted indirect climate effects are negligible
▶️ Energy requirements are substantial
▶️ Achieving high efficiencies is crucial to avoiding land use conflicts
▶️ Accelerating emission reductions now is essential!

Thanks to
✨ @umweltstiftung @bmbf_bund, and PalMod for funding
✨ CDRterra for great discussions
✨ @photoelectrochemistry and Thomas Kleinen, for your great help!

A visual abstract describing the key concept and one of the paper's findings. Left: Conceptual figure visualizing Sun-driven CO2 direct air capture, electrochemical conversion into a sink product, and long-term sequestration of that product (sDACCCS). Right: Global map of simulated total land conversions resulting from implementing sDACCCS with photovoltaics in a high-CDR and low-efficiency scenario. Spatial deployment is according to a burden-sharing scenario that builds on the historical emissions of individual countries.
Public *
💧🌏 Greg Cocks

Study Warns Of Glacial Outburst [GLOF] Risks From Hydropower Projects In The Himalayas, Caution Comes After Nod To Resume Testa III [Hydroelectric Project, India]
--
timesofindia.indiatimes.com/in <-- shared media article
--
doi.org/10.1126/science.ads265 <-- shared paper
--
#GIS #spatial #mapping #spatialanalysis #GLOF #Sikkim #Himalayas #India #climatechange #flood #flooding #risk #hazard #hydroelectric #HEP #energy #TestaIII #testa #dam #failure #engineeringgeology #engineering #construction #multihazard #melting #glacier #glacial #climatechange #weather #lowpressuresystem #planning #glaciallakes #lakes #water #hydrology #naturaldisaster #Lhonak #downstream #elevation #steepness #slope #geometry #infrastructure #publicsafety #lateral #moraine #sedimentation #cost #economics #remotesensing #model #modeling #imagery #outburstflood #overtopping #hydropower #vulnerable #humanimpact #policy #riskmanagement #warning #rainfall #precipitation

maps and charts - summary of damage assessment
maps and photos - Overview of the 3-4 October 2023 GLOF cascade from South Lhonak Lake, India
photos - Field evidence of sediment aggradation
photo - Teesta III hydroelectric dam soon after failure
Replied in thread
Public
Eric Maugendre

@data @datadon 🧵

How to assess a statistical model?
How to choose between variables?

Pearson's #correlation is irrelevant if you suspect that the relationship is not a straight line.

If monotonic relationship:
"#Spearman’s rho is particularly useful for small samples where weak correlations are expected, as it can detect subtle monotonic trends." It is "widespread across disciplines where the measurement precision is not guaranteed".
"#Kendall’s Tau-b is less affected [than Spearman’s rho] by outliers in the data, making it a robust option for datasets with extreme values."
Ref: statisticseasily.com/kendall-t

LEARN STATISTICS EASILY · Kendall Tau-b vs Spearman: Which Correlation Coefficient Wins?Discover why Kendall Tau-b vs Spearman Correlation is crucial for your data analysis and which coefficient offers the most reliable results.
#normality#normalDistribution#modeling
Public
💧🌏 Greg Cocks

Postfire Debris-Flow Hazards
--
usgs.gov/programs/landslide-ha <-- shared technical article / overview
--
alturl.com/po3yj <-- USGS Post-Fire Debris Flow Hazard Assessment Viewer
--
earthquake.usgs.gov/arcgis/res <-- Post-Fire Debris-Flow Hazards USGS spatial data / GIS Services
--
#GIS #spatial #mapping #USGS #LandslideHazardsProgram #NaturalHazards #3DEP #NGP #NationalGeospatialProgram #GIRT #GeospatialInformationResponseTeam #GIS #geology #hydrospatial #hydrology #landslides #debrisflows #fires #postfire #lidar #elevationdata #hazardassessments #preparedness #massmovement #engineeringgeology #risk #hazards #impacts #cost #economics #geomorphology #geomorphometry #spatialanalysis #spatiotemporal #remotesensing #soil #model #modeling #LosAngeles #LA #LosAngelesfires #California #wildfires #opendata
@USGS

photo - A home damaged by the January 9, 2018 debris flow event in Montecito, California. The event was triggered by heavy rain on the Thomas Fire burn area above Montecito. This home is located near Buena Vista Creek.
screen shot centered on LA - USGS Post-Fire Debris Flow Hazard Assessment Viewer (web map)
photo - Debris Flow in Cable Canyon following the 2003 Old Fire in the San Bernardino Mountains, California
photo - Post-fire debris flow depositing ash and sediment on a steep hillside, 2021 Dixie Fire in northern CA
Replied in thread
Public
Eric Maugendre

"In real life, we weigh the anticipated consequences of the decisions that we are about to make. That approach is much more rational than limiting the percentage of making the error of one kind in an artificial (null hypothesis) setting or using a measure of evidence for each model as the weight."
Longford (2005) stat.columbia.edu/~gelman/stuf

#modeling#nullHypothesis#probability
Replied to Eric Maugendre
Public
Eric Maugendre

"In #probability theory, a log-normal (or #lognormal) distribution is a continuous probability distribution of a random variable whose logarithm is normally distributed. Thus, if the random variable X is log-normally distributed, then Y = ln(X) has a normal distribution."

"It is a convenient and useful model for measurements in exact and engineering sciences, as well as medicine, economics […], energies, concentrations, lengths, prices".

en.wikipedia.org/wiki/Log-norm

en.wikipedia.orgLog-normal distribution - Wikipedia
#statistics#finance#modeling
Public
Claudia Kemfert

Call for Paper, together with Christian von Hirschhausen and Christian Breyer:
The Future of Renewable Energy Systems: Top-down and Bottom-up Technical-economic Modeling of Energy Systems, Energy Access (“mini-” and “micro-”grids), and Technological Development
in Discover Energy in Springer Nature Group

We look forward to receiving as many contributions as possible! 😊

#Energytransition #Energiewende #modeling

👇
link.springer.com/collections/

SpringerLinkThe Future of Renewable Energy Systems: Top-down and Bottom-up Technical-economic Modeling of Energy Systems, Energy Access (“mini-” and “micro-”grids), and Technological DevelopmentThis topical collection aims to provide a comprehensive analysis of energy systems, decentral grid and energy access, and technological foresight in the ...
ExploreLive feeds
About