Kostas Nikolaou
@kostasnikolaou.bsky.social
Reposted by Kostas Nikolaou
There is less than a month to go to HBEurope 2025 in Iceland, starting with an opening ceremony at the fantastic Harpa venue (www.harpa.is/en). We have fantastic plenaries, covering healthy & green buildings, the indoor microbiome, building physics & indoor moisture (www.hb2025iceland.org/keynotes)
Keynotes | HB 2025 - ISIAQ
www.hb2025iceland.org
May 13, 2025 at 12:59 PM
There is less than a month to go to HBEurope 2025 in Iceland, starting with an opening ceremony at the fantastic Harpa venue (www.harpa.is/en). We have fantastic plenaries, covering healthy & green buildings, the indoor microbiome, building physics & indoor moisture (www.hb2025iceland.org/keynotes)
Reposted by Kostas Nikolaou
Notice to flat-Earthers all around the globe: Please alert the authorities if tonight’s Total Lunar Eclipse looks like this:
March 13, 2025 at 8:28 PM
Notice to flat-Earthers all around the globe: Please alert the authorities if tonight’s Total Lunar Eclipse looks like this:
Reposted by Kostas Nikolaou
Check out this brilliant video explainer from Bristol University which illustrates how (as well as high CO2 levels often indicating poor ventilation and higher COVID risk environment) high CO2 levels also increase the lifetime of the virus in the air.
airspothealth.myshopify.com/a/blog/how-c...
airspothealth.myshopify.com/a/blog/how-c...
December 26, 2024 at 2:09 AM
Check out this brilliant video explainer from Bristol University which illustrates how (as well as high CO2 levels often indicating poor ventilation and higher COVID risk environment) high CO2 levels also increase the lifetime of the virus in the air.
airspothealth.myshopify.com/a/blog/how-c...
airspothealth.myshopify.com/a/blog/how-c...
Reposted by Kostas Nikolaou
Reposted by Kostas Nikolaou
For those who are not marine chemists, this is the easiest way to see how adding alkalinity to the ocean lowers pCO₂ without changing dissolved inorganic carbon and potentially allows the ocean to take up more atmospheric CO₂. 🌊
December 7, 2024 at 1:05 AM
For those who are not marine chemists, this is the easiest way to see how adding alkalinity to the ocean lowers pCO₂ without changing dissolved inorganic carbon and potentially allows the ocean to take up more atmospheric CO₂. 🌊
Reposted by Kostas Nikolaou
Big fan of the 6XL -https://youtu.be/ok7f3CHUBG0?si=YonKu64_k4ioxCPp
December 6, 2024 at 6:00 PM
Big fan of the 6XL -https://youtu.be/ok7f3CHUBG0?si=YonKu64_k4ioxCPp
Reposted by Kostas Nikolaou
Our 6XL air purifier has a CADR of 290 cfm, uses two 3M Filtrete MPR2200 (MERV13) and runs very quiet at under 40dB.
December 6, 2024 at 3:09 PM
Our 6XL air purifier has a CADR of 290 cfm, uses two 3M Filtrete MPR2200 (MERV13) and runs very quiet at under 40dB.
Reposted by Kostas Nikolaou
💯Clean air delivery rate (CADR) is more important than HEPA rating! I have been buying portable air cleaners for the lab and home that are not HEPA-level but offer a high CADR per dollar spent and low noise.
Marwa Zaatari's comparison chart from 2021 is a good way to think about this.
Marwa Zaatari's comparison chart from 2021 is a good way to think about this.
December 5, 2024 at 2:39 PM
💯Clean air delivery rate (CADR) is more important than HEPA rating! I have been buying portable air cleaners for the lab and home that are not HEPA-level but offer a high CADR per dollar spent and low noise.
Marwa Zaatari's comparison chart from 2021 is a good way to think about this.
Marwa Zaatari's comparison chart from 2021 is a good way to think about this.
Reposted by Kostas Nikolaou
Global fossil CO2 emissions by continent:
* Over half the emissions originate from Asia
* North America (16%) & Europe (13%), with only slow declines
* Middle East is 8%
Per-capita basis:
* North America & Oceania clearly the highest
* Middle East higher than Europe
* Asia just under global average
* Over half the emissions originate from Asia
* North America (16%) & Europe (13%), with only slow declines
* Middle East is 8%
Per-capita basis:
* North America & Oceania clearly the highest
* Middle East higher than Europe
* Asia just under global average
December 2, 2024 at 11:33 AM
Global fossil CO2 emissions by continent:
* Over half the emissions originate from Asia
* North America (16%) & Europe (13%), with only slow declines
* Middle East is 8%
Per-capita basis:
* North America & Oceania clearly the highest
* Middle East higher than Europe
* Asia just under global average
* Over half the emissions originate from Asia
* North America (16%) & Europe (13%), with only slow declines
* Middle East is 8%
Per-capita basis:
* North America & Oceania clearly the highest
* Middle East higher than Europe
* Asia just under global average
Reposted by Kostas Nikolaou
Reposted by Kostas Nikolaou
Americans killed annually by
All Islamic jihadist terrorists 9
Armed toddlers 21
Lightning 31
Lawnmowers 69
Busses 264
Falling out of bed 737
Being shot by another American 11,737
2017 estimates. The Royal Statistical Society gave this compilation its International Statistic of the Year award.
All Islamic jihadist terrorists 9
Armed toddlers 21
Lightning 31
Lawnmowers 69
Busses 264
Falling out of bed 737
Being shot by another American 11,737
2017 estimates. The Royal Statistical Society gave this compilation its International Statistic of the Year award.
December 1, 2024 at 9:13 PM
Americans killed annually by
All Islamic jihadist terrorists 9
Armed toddlers 21
Lightning 31
Lawnmowers 69
Busses 264
Falling out of bed 737
Being shot by another American 11,737
2017 estimates. The Royal Statistical Society gave this compilation its International Statistic of the Year award.
All Islamic jihadist terrorists 9
Armed toddlers 21
Lightning 31
Lawnmowers 69
Busses 264
Falling out of bed 737
Being shot by another American 11,737
2017 estimates. The Royal Statistical Society gave this compilation its International Statistic of the Year award.
Reposted by Kostas Nikolaou
The UC Davis College of Engineering partnered w/ the CA Dept of Public Health to produce 31 short educational videos on Indoor Air Quality. Our hope is that these help facility managers, school administrators, the general public & more. Please help pass the word.
iaq.ucdavis.edu/video-lessons/
iaq.ucdavis.edu/video-lessons/
Video Lessons - IAQ
Overview Videos https://youtu.be/MLZrue61Mgk Indoor Air Quality Basics https://youtu.be/-AkYYZOPD1A IAQ and Respiratory Diseases https://youtu.be/xuOiffqt63c Strategies and Methods for IAQ Assessment ...
iaq.ucdavis.edu
November 21, 2024 at 9:15 PM
The UC Davis College of Engineering partnered w/ the CA Dept of Public Health to produce 31 short educational videos on Indoor Air Quality. Our hope is that these help facility managers, school administrators, the general public & more. Please help pass the word.
iaq.ucdavis.edu/video-lessons/
iaq.ucdavis.edu/video-lessons/
Reposted by Kostas Nikolaou
I often show my students this visualization of how atmospheric CO₂ travels around the globe. Our attitude toward burning fossil fuels would change significantly if we could actually see CO₂.
svs.gsfc.nasa.gov/goto?11719
svs.gsfc.nasa.gov/goto?11719
November 29, 2024 at 10:09 PM
I often show my students this visualization of how atmospheric CO₂ travels around the globe. Our attitude toward burning fossil fuels would change significantly if we could actually see CO₂.
svs.gsfc.nasa.gov/goto?11719
svs.gsfc.nasa.gov/goto?11719
November 30, 2024 at 10:00 PM
Reposted by Kostas Nikolaou
You can now share the Warming Stripes directly to BlueSky, such as these for my town of Reading:
(Find the graphic you want to share, click the blue options button - the one with three horizontal lines - and select the butterfly!)
showyourstripes.info/s/europe/uni...
(Find the graphic you want to share, click the blue options button - the one with three horizontal lines - and select the butterfly!)
showyourstripes.info/s/europe/uni...
Show Your Stripes
Visualising how the climate has changed for every country across the globe
showyourstripes.info
November 30, 2024 at 12:55 PM
You can now share the Warming Stripes directly to BlueSky, such as these for my town of Reading:
(Find the graphic you want to share, click the blue options button - the one with three horizontal lines - and select the butterfly!)
showyourstripes.info/s/europe/uni...
(Find the graphic you want to share, click the blue options button - the one with three horizontal lines - and select the butterfly!)
showyourstripes.info/s/europe/uni...
Reposted by Kostas Nikolaou
Big news! The 'all scientists who do climate' feed now stands at:
🌏 3500 MEMBERS 🌎
...more than it ever had on Twitter!
Huge welcome to #3949, my fav colleague @brasmus.bsky.social, and #3500, @johndparker.bsky.social, who says he’s “not good at social media.” No longer, John!
Pin it here ⬇️
🌏 3500 MEMBERS 🌎
...more than it ever had on Twitter!
Huge welcome to #3949, my fav colleague @brasmus.bsky.social, and #3500, @johndparker.bsky.social, who says he’s “not good at social media.” No longer, John!
Pin it here ⬇️
November 26, 2024 at 2:21 PM
Big news! The 'all scientists who do climate' feed now stands at:
🌏 3500 MEMBERS 🌎
...more than it ever had on Twitter!
Huge welcome to #3949, my fav colleague @brasmus.bsky.social, and #3500, @johndparker.bsky.social, who says he’s “not good at social media.” No longer, John!
Pin it here ⬇️
🌏 3500 MEMBERS 🌎
...more than it ever had on Twitter!
Huge welcome to #3949, my fav colleague @brasmus.bsky.social, and #3500, @johndparker.bsky.social, who says he’s “not good at social media.” No longer, John!
Pin it here ⬇️
Reposted by Kostas Nikolaou
🌟 PhD Opportunity: Age-Friendly & Just Indoor Spaces 🌟
Come and do a PhD with me @universityofleeds.bsky.social creating healthier & more sustainable spaces for older people
✅ Fully funded
✅ Open to all nationalities
✅ Deadline 31 Jan 2025
More info: phd.leeds.ac.uk/project/2107...
PLEASE SHARE
Come and do a PhD with me @universityofleeds.bsky.social creating healthier & more sustainable spaces for older people
✅ Fully funded
✅ Open to all nationalities
✅ Deadline 31 Jan 2025
More info: phd.leeds.ac.uk/project/2107...
PLEASE SHARE
Co-producing age-friendly and just indoor spaces: indoor environmental quality and Net Zero transitions
Project opportunity - Co-producing age-friendly and just indoor spaces: indoor environmental quality and Net Zero transitions at the University of Leeds
phd.leeds.ac.uk
November 26, 2024 at 9:48 AM
🌟 PhD Opportunity: Age-Friendly & Just Indoor Spaces 🌟
Come and do a PhD with me @universityofleeds.bsky.social creating healthier & more sustainable spaces for older people
✅ Fully funded
✅ Open to all nationalities
✅ Deadline 31 Jan 2025
More info: phd.leeds.ac.uk/project/2107...
PLEASE SHARE
Come and do a PhD with me @universityofleeds.bsky.social creating healthier & more sustainable spaces for older people
✅ Fully funded
✅ Open to all nationalities
✅ Deadline 31 Jan 2025
More info: phd.leeds.ac.uk/project/2107...
PLEASE SHARE
Reposted by Kostas Nikolaou
If you think Direct Air Capture (DAC) is going to save us, please read this.
This is isn’t some left-wing fringe environmental group saying this.
It’s MIT.
news.mit.edu/2024/reality...
This is isn’t some left-wing fringe environmental group saying this.
It’s MIT.
news.mit.edu/2024/reality...
Reality check on technologies to remove carbon dioxide from the air
An MIT Energy Initiative study finds many climate-stabilization plans are based on questionable assumptions about the future cost and deployment of “direct air capture” and therefore may not bring abo...
news.mit.edu
November 26, 2024 at 2:56 PM
If you think Direct Air Capture (DAC) is going to save us, please read this.
This is isn’t some left-wing fringe environmental group saying this.
It’s MIT.
news.mit.edu/2024/reality...
This is isn’t some left-wing fringe environmental group saying this.
It’s MIT.
news.mit.edu/2024/reality...
Reposted by Kostas Nikolaou
🌎 423.96 ppm #CO2 in the planet's air for the 47th week of 2024 🌎
📈 Up from 421.40 one year ago📈
🔗 NOAA Mauna Loa weekly data: gml.noaa.gov/ccgg/trends/... 🔗
🔄 CO2.Earth distribution: www.co2.earth/weekly-co2 & www.show.earth/the-weekly-co2-tracker-for-web 🔄
📈 Up from 421.40 one year ago📈
🔗 NOAA Mauna Loa weekly data: gml.noaa.gov/ccgg/trends/... 🔗
🔄 CO2.Earth distribution: www.co2.earth/weekly-co2 & www.show.earth/the-weekly-co2-tracker-for-web 🔄
November 25, 2024 at 2:08 PM
🌎 423.96 ppm #CO2 in the planet's air for the 47th week of 2024 🌎
📈 Up from 421.40 one year ago📈
🔗 NOAA Mauna Loa weekly data: gml.noaa.gov/ccgg/trends/... 🔗
🔄 CO2.Earth distribution: www.co2.earth/weekly-co2 & www.show.earth/the-weekly-co2-tracker-for-web 🔄
📈 Up from 421.40 one year ago📈
🔗 NOAA Mauna Loa weekly data: gml.noaa.gov/ccgg/trends/... 🔗
🔄 CO2.Earth distribution: www.co2.earth/weekly-co2 & www.show.earth/the-weekly-co2-tracker-for-web 🔄
Reposted by Kostas Nikolaou
The planets orbit the Sun at different speeds, with the inner planets moving the fastest—they need to, to resist being pulled in by the Sun's gravity.
Here's a side-by-side comparison (race?) of their velocities!
Here's a side-by-side comparison (race?) of their velocities!
November 23, 2024 at 11:39 PM
The planets orbit the Sun at different speeds, with the inner planets moving the fastest—they need to, to resist being pulled in by the Sun's gravity.
Here's a side-by-side comparison (race?) of their velocities!
Here's a side-by-side comparison (race?) of their velocities!
Reposted by Kostas Nikolaou
This #showyourstripes day 2024, I am happy to announce our new NASA Climate Legacies tool that allows you to put yourself and your family & friends on the climate stripes diagram we presented in the IPCC Synthesis Report. Make your own at svs.gsfc.nasa.gov/webapps/clim...; a🧵
NASA Climate Legacies
svs.gsfc.nasa.gov
June 21, 2024 at 5:48 PM
This #showyourstripes day 2024, I am happy to announce our new NASA Climate Legacies tool that allows you to put yourself and your family & friends on the climate stripes diagram we presented in the IPCC Synthesis Report. Make your own at svs.gsfc.nasa.gov/webapps/clim...; a🧵
Reposted by Kostas Nikolaou
New paper by Corsi's group at UC Davis on long term clean air delivery rate performance of #CRBox. Held up well after an academic year of operation. pubs.rsc.org/en/content/a...
Longevity of size-dependent particle removal performance of do-it-yourself box fan air filters
Filtration performance of do-it-yourself (DIY) box fan filters deployed across a university campus was assessed over an academic year. Four DIY air filters were constructed from box fans and air filte...
pubs.rsc.org
November 11, 2024 at 2:54 PM
New paper by Corsi's group at UC Davis on long term clean air delivery rate performance of #CRBox. Held up well after an academic year of operation. pubs.rsc.org/en/content/a...