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RPCVguy

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  1. The first couple of minutes of this PBS video explains Wet Bulb, and a demonstration of how it is roughly measured.
  2. Yes, that is a good site for basic data and a forecast too. Another site supplies historical detail and compares it to the typical temperatures for that day. So far, Bangkok is warmer than average this year. Take a look at the temperature measurement vs the thin red line that tracks the historical average temperatures as recorded at • https://weatherspark.com/h/y/113416/2024/Historical-Weather-during-2024-in-Bangkok-Thailand The data collected on the above site agrees well with the Weather DataGFS (Global Forecast System) assembled from EMC / NCEP / NWS / NOAA and posted on https://earth.nullschool.net/ The site can be set for a specific "home" GPS setting and will provide a few days forecast. Locations that are not on weatherspark.com list of sites may have reporting, but I have found the data to be unreliable as to reporting relative humidity. Maybe their equipment is poor, or the equipment is not well placed. People reporting 55% humidity while stating the temperature is over 35ºC might be accessing such sites. Alternatively, the conditions are short term. Such readings are in the range that can not be endured for long. Looking at Thailand for March 28th, such conditions were NOT seen. One of the worst readings was 37ºC with 37% relative humidity.
  3. That's just another aspect of geophysics relating to glacial ice melt. It is not related to the latitude but rather to the specific mountains or land mass that is losing glacial ice. Post-glacial rebound or isostatic adjustment is the rise of land masses that were depressed by the huge weight of ice sheets during the last ice age.
  4. The headline got people to look, the reality is not soon so significant. Actually, the climate consequences are delaying a reverse negative leap second from 2026 to maybe 2029. • https://www.msn.com/en-xl/news/other/melting-polar-ice-may-be-slowing-earth-s-spin-and-messing-with-how-we-measure-time/ar-BB1kHsvu What is happening is that the mass of ice at the poles that melts ends up becoming part of the water bulge of oceans at the equator. Just like a figure skater can slow a spin by extending arms outward, the added mass at the equator means the Earth spins slightly slower. But the changes at Earth's core was causing a speeding up of the rotation. The definition of a day being 24 hours of 60 minutes, each having 60 seconds has already been replaced by using the adoption of atomic clocks in 1967. That change of time measurement revolutionized timekeeping, relying on the precise frequency of atoms for accurate measurements. People who are responsible for posting the time nationally will track the topic, come to an agreement and reset their clocks in the year needed, subsequent radio and communications systems will follow along, and most people will never notice.
  5. Not quite. Each cycle of El Nino gets hotter. For the tropics in general, and Thailand in particular, temperatures peak during both the spring and autumn equinox. As the planet warms, the oceans warm, and those seasonal temperature peaks also increase on average. https://climatereanalyzer.org/clim/t2_daily/?dm_id=tropics
  6. It is the heat of the season, combined with high enough humidity to make it feel even hotter. Today, the actual temperature of 37.5ºC feels like 40.2ºC https://earth.nullschool.net/#2024/03/25/0600Z/wind/surface/level/overlay=misery_index/orthographic=-256.68,22.35,1823/loc=100.707,14.146 The ongoing warming of the seas add to humidity and pre-warm the air more - before it reaches shore. It will make this El Nino hot season hotter than those of the past. Future cycles will get still worse. Here is a graph tracking ocean temperatures https://climatereanalyzer.org/clim/sst_daily/ Air over the tropics peaks during both the spring and autumn equinox. As the oceans warm, those seasonal peaks also increase on average. https://climatereanalyzer.org/clim/t2_daily/?dm_id=tropics
  7. Daily measurements on hundreds of locations globally, gathered over 50 years and averaged gave a DEFINED baseline that the IPCC nations agreed (in 2015) to use as the pre-industrial starting point. Very refined instrumentation since then has allowed agencies to measure the current AVERAGE to a level of precision. If you look at the graphics in my post above at https://aseannow.com/topic/1320365-thailand-braces-for-intense-heat-with-temperatures-soaring/?do=findComment&comment=18708900 Pay attention to how closely the different, independent agencies numbers have agreed over the last 50 years. Then too, look at: https://aseannow.com/topic/1319433-first-time-the-world-has-exceeded-15c-for-an-entire-year/?do=findComment&comment=18698506 You will see some lines have a shaded range showing the degree of uncertainty in that researcher or agency's numbers.
  8. Here is a Bangkok specific reply as to the effect El Nino has on the history of heat during March, April and May. The peak temperature for El Nino globally is generally in February of the year after the El Nino started. Temperatures are rising globally, so recent La Nina years have averaged higher than El Nino years of even a decade ago. 2024 is when the peak temperatures for this El Nino cycle are expected. These charts and tables show monthly averages compared to 30 years of averages for the same months from 1991-2020. I highlighted the El Nino months to call attention to why this 2024 season from March through May has a high likelihood of being uncomfortably hot.
  9. You can do some research instead of just showing what you challenge others to answer. Try this: "2023 was warmest year on Earth since direct observations began. In Berkeley Earth's analysis 2023 was 1.54 °C above our 1850-1900 average, making it the first year above 1.5 °C. The extreme heat was due to a combination of natural and man-made factors, including global warming and an emerging El Niño event. 17% of the Earth's surface had a locally warmest year, affecting 2.3 billion people, including significant parts of Asia, South and Central America." https://berkeleyearth.org/global-temperature-report-for-2023/ Their story is at https://berkeleyearth.org/about/ They also show their reporting versus the other agencies globally
  10. Though this and the related comments about the border are off the immediate topic... No. Beyond the GOP griping, the current US law regarding asylum seekers is what allows people to remain in the USA once they have entered. Do some research and see why the need is for Congress to get its act together and pass different laws. The senate made an attempt, and Mike Johnson said it was DOA - before even reading it. Yes, it is easier to complain than it is to devise good, well written, applicable laws - but the current stars of the GOP prefer grandstanding. To start your research, his is a useful link: • https://www.law.cornell.edu/uscode/text/8/1158
  11. To be more precise, it is the first time since at least the beginning of the last Ice Age that Earth has been at this temperature. This El Nino cycle is expected to peak early this year - meaning heat release from the oceans soon will not be as significant a contributor to global average air temperatures. Don't expect any great relief though. The albedo reflectivity is worsening as snow and ice covered areas shrink, and the insulation factor of greenhouse gases continues to grow as their concentrations continue to increase. Here is a set of graphs covering various historical ranges: And here is the current plot of global daily air temperature anomaly. Earth has definitely averaged over 1.5ºC above the baseline agreed to by the IPCC and set as an International Goal to stay below in Paris in 2015 Image source Prof Elliot Jacobson via X, though this site by the University of Maine supplies anomaly data by date - against a more recent/ warmer baseline of 1979-2000 https://climatereanalyzer.org/clim/t2_daily/?dm_id=world The latest global surface temperature data point on Feb. 8 from ERA5 once again put the planet 2.0°C above the 1850-1900 IPCC baseline, at 2.01°C. The only other times this has happened were Nov. 17, 2023 (2.05°C) and Nov. 18, 2023 (2.06°C).
  12. There are a number of women who have made discoveries for which they were not given credit. Once the error is known, it seems wrong to perpetuate the error. Among climate scientists, Eunice Foote is now recognized for her research, discovery, and presentation (documented in 1856.) It will take a while for old quotes of the prior citation to be clarified. Here is a quote, published in 2011: "Conclusion In the course of scientific discovery, it can be difficult to assess claims of priority, particularly if research results are not placed in the public domain through formal publication. This is commonplace for presentations at scientific conventions, where often only a title or perhaps an abstract is preserved for posterity. In the case of Eunice Foote's pioneering research on absorption of radiant energy by greenhouse gases, such as CO2 , and the implication that compositional changes in the atmosphere could impact climate changes, it was only through the journalism of David Wells that the originality of her work has been documented. Despite the absence of a formal publication, It is clear that Eunice Foote deserves credit for being an innovator on the topic of CO2 and its potential impact on global climate warming.” https://www.searchanddiscovery.com/pdfz/documents/2011/70092sorenson/ndx_sorenson.pdf.html The information is accessible to track. Here is another link to it: https://www.aip.org/history-programs/niels-bohr-library/ex-libris-universum/foote-note-climate-science-founder
  13. Small correction here. The work was done and first presented 2 years before John Tyndall in 1858 as is usually credited. It took over a century for the proper credit to be given. http://www.climatechangenews.com/2016/09/02/the-woman-who-identified-the-greenhouse-effect-years-before-tyndall/
  14. Yep, a problem for habitability in the tropics as temperatures and humidity approach having days near human metabolic limits. That's especially bad for workers outdoors and those without access to air conditioning. Those with AC better hope there are no blackouts. As for the Arctic, the soils may not support what we would hope to grow, and in many areas of the Arctic, trees are toppling as the subsoil thaws, heaves, or turns to a muddy mess.
  15. If you think a trace gas can't have a large effect, you've never noticed how a small mosquito can affect you . Greenhouse gases are transparent to visible light, but absorb and re-radiate infrared light (heat.) Human industrial activities have caused the concentration of CO2 from the inter glacial peak of 280ppm to 420ppm, that is a 50% increase in the insulation layer of CO2. Methane and nitrous oxides have also increased. The result is that day by day more heat energy is getting stored in Earth's systems. The imbalance, expressed as watts per square meter over the planet now exceeds 1.5W/sq.m. The cumulative effect is huge. 90% of that heat is stored in the oceans. Warmer oceans lead to more intense storms.
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