October 1st, 2020 by Roy W. Spencer, Ph. D.
The Version 6.0 global average lower tropospheric temperature (LT) anomaly for September, 2020 was +0.57 deg. C, up from from the August, 2020 value of +0.43 deg. C.
The linear warming trend since January, 1979 remains at +0.14 C/decade (+0.12 C/decade over the global-averaged oceans, and +0.18 C/decade over global-averaged land).
For comparison, the CDAS global surface temperature anomaly for the last 30 days at Weatherbell.com is +0.38 deg. C.
With La Nina in the Pacific now officially started, it will take several months for that surface cooling to be fully realized in the tropospheric temperatures. Typically, La Nina minimum temperatures (and El Nino maximum temperatures) show up around February, March, or April.
metmike: The slight, mostly beneficial warming trend of this current climate optimum continues.