The global average temperature has reached an unofficial record for the third day in a row, measuring 17.18 degrees Celsius on Wednesday.
The University of Maine’s Climate Reanalyzer, a tool that uses satellite data and computer simulations to measure the world’s condition, recorded the temperature.
It matched a record set on Tuesday of 17.18C and came after a previous record of 17.01C was set on Monday.
Climate scientist Sean Birkle, creator of the Climate Reanalyzer, said the daily figures are unofficial but a useful snapshot of what’s happening in a warming world.
US National Oceanic and Atmospheric Administration chief scientist Sarah Kapnick agreed, saying while the figures are not an official government record, “this is showing us an indication of where we are right now.”
Earth has again unofficially matched the highest record for global average temperature – ABC News
According to NBC News:
The University of Maine’s Climate Reanalyzer is based on a NOAA computer simulation intended for forecasts that uses satellite data. It is not based on reported observations from the ground. So this unofficial record is effectively using a weather tool that is designed for forecasts, not record-keeping.
World swelters under unofficial hottest day on record (nbcnews)
The hottest day ever was from a forecast model, not from actual measurements:
I would like to learn more about “reanalysis” as I am not familiar with what this means. All we know was this was manufactured from a computer model simulation, and not based on actual measurements of temperature.
‘Reanalysis is a scientific method for developing a comprehensive record of how weather and climate are changing over time. In it, observations and a numerical model that simulates one or more aspects of the Earth system are combined objectively to generate a synthesized estimate of the state of the system. A reanalysis typically extends over several decades or longer and covers the entire globe from Earth’s surface to well above the stratosphere. Reanalysis products are used extensively in climate research and services, including for monitoring and comparing current climate conditions with those of the past, identifying the causes of climate variations and change, and preparing climate predictions.’ (from Reanalysis.org)
The Climate Reanalyzer (carleton.edu)
And I still do not know. Will keep looking. As anyone who reads this blog knows, based on the history of disease models, I have lost confidence in modeling. And I used to teach model construction at a University.
