Search Results for: PCA

Sea Level PCA, from the Baltic Sea to el NiƱo

I’ve made a new estimate of global sea level based on a subset of all the tide gauge data in PSMSL (Permanent Service for Mean Sea Level). I’m just doing the 20th century, and I’ve used only those data sets … Continue reading

Australia Rain: Seasonal by State

I recently looked for trends in precipitation in New South Wales, searching for a regional rather than continental trend. There wasn’t much to find, no real evidence of change in the yearly average rainfall. But we can also look for … Continue reading

Sea Level: Gridded Average

I’ve formed a gridded composite sea level estimate and I’d like to share it. It’s quite crude, but some compensation is necessary because a simple average of stations is dominated by Europe and North America, there are so many tide … Continue reading

Sea Level: Align the Aligned

A new paper by Nauels et al. concludes that even if the U.S. stays in the Paris agreement and all nations make good on their pledges, our greenhouse gas emissions by the year 2030 will be enough to guarantee at … Continue reading

Global Warming USA: Patterns of Drought

A good measure of drought severity is the Palmer Drought Severity Index, also called simply “PDSI.” One thing to keep in mind is that negative numbers indicated drought, the more negative the more severe, while positive numbers indicate wet conditions. … Continue reading

Global Warming USA: the Long and the Short of it

Since 1895, the conterminous USA (lower 48 states) has warmed significantly:

Video Power

defendourfuture.org has some excellent videos. This one is funny: This one’s not.

Gone with the Wind

A recent post at RealClimate by Matthew England discusses the results of his (and others’) recent paper (England et al. 2014, Recent intensification of wind-driven circulation in the Pacific and the ongoing warming hiatus, Nature Climate Change, doi:10.1038/nclimate2106) about changes … Continue reading

Sea unLevel

Sea level is by no means “level.” Not only are there small changes in the geoid (the gravitational equipotential surface), the sea itself does not conform to the geoid because of winds and currents, tides and storms. These geographical variations … Continue reading

Northeast U.S. Snowfall

Here in Maine we had a lot of snowfall today. It wasn’t very cold — well within the normal range for this time of year as far as temperature is concerned — but the snowfall was very heavy, nearly a … Continue reading