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Additional figures are on More Figures page.
* * * * * * Annual Mean Temperature Ranking * * * * * *
Table with 1880-1920 base period
Table with 1951-1920 base period
Below are maps of the mean surface temperature anomaly for the past month, the past three months, and the past 12 months. Regional weather patterns, apparent on the monthly time scale, tend to disappear in averages over longer time scales.
Also in PDF, last modified 2023/05/12, now with GHCN version 4 and ERSST v5.
Data through April 2023 are used for computing the means. last modified 2023/05/12, now with GHCN v4 and ERSST v5.)
Comparison of temperature of a few years in recent past. Figure also available in PDF (Updated on 2023/05/12, now with GHCN v4 and ERSST v5)
Comparison of El Nino/La Nina phase and the global mean temperature change. Figure also available in PDF (Updated on 2023/05/12, now with GHCN v4 and ERSST v5)
Additional figures are on More Figures page.
Switching to New Versions of Data Sets
GHCN Station Data:
- 2011/12/15: from GHCN v2 to v3
- 2015/06/13: from GHCN v3.2.2 to v3.3.0.
- 2019/06/17: from GHCN v3 to v4
Sea Surface Temperature:
- 2013/01/15: from HadISST1 + OI SST to ERSST.
- 2015/07/19: from ERSST v3b to ERSST v4.
- 2017/08/15: from ERSST v4 to ERSST v5.
AIRS Temperature Data:
NASA/GISS added Surface Temperature Anomaly estimates from Remote Sensed data (Susskind et al. 2019) to be available from its web site.
Our Essays
- Global Warming Acceleration (2020/12/14)
- Accelerated Warming (2020/10/14)
- Race is On, and Here Comes... (2020/06/12)
- Bending the Curves (2020/04/14)
- Global Warming and East Coast Hurricanes (2018/09/17)
- A Better Graph (2016/09/26)
- Global Temperature Update (2015/08/24)
- Global Warming Hole (2015/03/31)
- If It's That Warm, How Come It's So Darned Cold? (2010/01/26)
Monthly Update E-Mails:
- 2022: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Dec (annual)
- 2021: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec (annual)
- 2020: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec (annual), Annual Figures
- 2019: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec (annual)
- 2018: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec (annual)
- 2017: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec (annual)
- 2016: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec (annual)
- 2015: Feb Mar, Apr, May, Jul, Aug, Sep, Oct, Dec (annual)
Annual and Decadal Summary:
Original Data