Proceedings of the National Academy of Sciences, Volume 122, Issue 52, December 2025. SignificanceTropical cyclone (TC) imposes tremendous threats to the human society, but predicting TC behavior is still difficult. One important limitation is the lack of long-term observational data as instrumental observation started in the 19th century. …
Observations from the Little Bunker
Last updated: December 31, 2025 12:21 PM
Atmospheric CO₂
427.9 ppm
+18.1
ppm/year
Atmospheric CH₄
1930.95 ppb
+-3.5
ppb/year
Global Temperature
+1.48 °C
Peak: +1.73°C
World Population
8.1 billion
+67
million/year