From Dr. Roy Spencer's Global Warming Blog
Author: Dr. Roy W. Spencer
2024 sets new record for hottest year in satellite era (since 1979)
The December 2024 global mean lower tropospheric temperature (LT) anomaly in version 6.1 is +0.62 degrees. C deviates from the 1991-2020 average and is slightly below the November 2024 anomaly of +0.64 degrees.
The global regional average temperature trend in Version 6.1 (January 1979 to December 2024) remains at +0.15 °C/decade (+0.22 C/decade on land, +0.13 C/decade on ocean).
As can be seen from the following ranking of years from hottest to coldest, 2024 is by far the hottest year in the 46-year satellite record, with an average temperature of 0.77 degrees. C is above the 30-year average, while the second warmest year (2023) is +0.43 degrees. C is above the 30-year average. [Note: These yearly average anomalies weight the individual monthly anomalies by the number of days in each month.]
The table below lists the deviation of version 6.1 LT by region over the past 24 months from the 30-year (1991-2020) average (all-time highs are shown in red).
| Year | Mo | Earth | New Hampshire. | flash. | tropical | United States 48 | Arctic | Australian University of Technology |
| 2023 | Yang | -0.06 | +0.07 | -0.19 | -0.41 | +0.14 | -0.10 | -0.45 |
| 2023 | February | +0.07 | +0.13 | +0.01 | -0.13 | +0.64 | -0.26 | +0.11 |
| 2023 | March | +0.18 | +0.22 | +0.14 | -0.17 | -1.36 | +0.15 | +0.58 |
| 2023 | April | +0.12 | +0.04 | +0.20 | -0.09 | -0.40 | +0.47 | +0.41 |
| 2023 | possible | +0.28 | +0.16 | +0.41 | +0.32 | +0.37 | +0.52 | +0.10 |
| 2023 | June | +0.30 | +0.33 | +0.28 | +0.51 | -0.55 | +0.29 | +0.20 |
| 2023 | July | +0.56 | +0.59 | +0.54 | +0.83 | +0.28 | +0.79 | +1.42 |
| 2023 | August | +0.61 | +0.77 | +0.45 | +0.78 | +0.71 | +1.49 | +1.30 |
| 2023 | September | +0.80 | +0.84 | +0.76 | +0.82 | +0.25 | +1.11 | +1.17 |
| 2023 | October | +0.79 | +0.85 | +0.72 | +0.85 | +0.83 | +0.81 | +0.57 |
| 2023 | November | +0.77 | +0.87 | +0.67 | +0.87 | +0.50 | +1.08 | +0.29 |
| 2023 | December | +0.75 | +0.92 | +0.57 | +1.01 | +1.22 | +0.31 | +0.70 |
| 2024 | Yang | +0.80 | +1.02 | +0.58 | +1.20 | -0.19 | +0.40 | +1.12 |
| 2024 | February | +0.88 | +0.95 | +0.81 | +1.17 | +1.31 | +0.86 | +1.16 |
| 2024 | March | +0.88 | +0.96 | +0.80 | +1.26 | +0.22 | +1.05 | +1.34 |
| 2024 | April | +0.94 | +1.12 | +0.77 | +1.15 | +0.86 | +0.88 | +0.54 |
| 2024 | possible | +0.78 | +0.77 | +0.78 | +1.20 | +0.05 | +0.22 | +0.53 |
| 2024 | June | +0.69 | +0.78 | +0.60 | +0.85 | +1.37 | +0.64 | +0.91 |
| 2024 | July | +0.74 | +0.86 | +0.62 | +0.97 | +0.44 | +0.56 | -0.06 |
| 2024 | August | +0.76 | +0.82 | +0.70 | +0.75 | +0.41 | +0.88 | +1.75 |
| 2024 | September | +0.81 | +1.04 | +0.58 | +0.82 | +1.32 | +1.48 | +0.98 |
| 2024 | October | +0.75 | +0.89 | +0.61 | +0.64 | +1.90 | +0.81 | +1.09 |
| 2024 | November | +0.64 | +0.88 | +0.41 | +0.53 | +1.12 | +0.79 | +1.00 |
| 2024 | December | +0.62 | +0.76 | +0.48 | +0.53 | +1.42 | +1.12 | +1.54 |
The full UAH global temperature report, along with LT global grid point anomaly images for December 2024, along with more detailed analysis by John Christy, should be available here in the next few days.
Monthly anomalies for each of the four deep layers we monitor via satellite will be available over the next few days at the following locations:
lower troposphere
middle troposphere
tropopause
lower stratosphere
Relevant
Learn more from Watts Up With That?
Subscribe to have the latest posts delivered to your email.
