Climate Fish Tales

By Jim Steele- ReBlogged From WUWT

What’s Natural?

American folk lore is filled with stories of how Native Americans observed changes in wildlife and foretold future weather changes. I was fascinated by an 1800s story of Native Americans inhabiting regions around Marysville, California who had moved down into the river valleys during drought years. They then moved to higher ground before devastating floods occurred. Did they understand California’s natural climate cycles? Could changes in salmon migrations alert them?

Observing salmon has certainly improved modern climate science. In the 1990s climate scientists struggled to understand why surface temperatures in the northwest sector of the Pacific Ocean had suddenly become cooler while temperatures in the eastern tropical Pacific suddenly warmed. Climate models predicted no such thing. However, fishery biologists noted salmon abundance in Alaska underwent boom and bust cycles lasting 20 to 40 years. When Alaskan salmon populations boomed, their populations from California to Washington busted. Conversely, decades later when Alaskan populations busted, those more southerly populations boomed.

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Greenland Is Way Cool

By Willis Eschenbach – Re-Blogged From WUWT

As a result of a tweet by Steve McIntyre, I was made aware of an interesting dataset. This is a look by Vinther et al. at the last ~12,000 years of temperatures on the Greenland ice cap. The dataset is available here.

Figure 1 shows the full length of the data, along with the change in summer insolation at 75°N, the general location of the ice cores used to create the temperature dataset.

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Weak Sun and El Nino Events May Create a Colder and Snowier Than Normal Winter Season in Much of the Eastern Half of the USA

By Meteorologist Paul Dorian – Re-Blogged From WUWT

The fast approaching solar minimum and its potential impact on the upcoming winter season

Overview

In the long term, the sun is the main driver of all weather and climate and multi-decadal trends in solar activity can have major impacts on oceanic and atmospheric temperatures. In addition, empirical observations have shown that the sun can have important ramifications on weather and climate on shorter time scales including those associated with the average solar cycle of around 11-years. For example, there is evidence that low solar activity during solar minimum years tend to be well-correlated with more frequent “high-latitude blocking” events compared to normal and this type of atmospheric phenomenon can play an important role in the winter season.

The sun today: a blank, spotless, ball. 58% of the days in 2018 have been without sunspots. Source: NASA SDO

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Jet Stream Carries Sahara Dust to Arctic

By Anthony Watts – Re-Blogged From WUWT

Polar jet circulation changes bring Sahara dust to Arctic, increasing temperatures, melting ice

Summary points

  • A new atmospheric mechanism by which dust travels from the Sahara Desert across the eastern side of the North Atlantic Ocean towards the Arctic has been discovered
  • The dust emission was generated by a Saharan cyclone that was triggered by the intrusion of a trough emanating from the polar jet
  • The poleward transport of warm dust was caused by a meandering polar jet stream
  • Approximately half of the warming in the Arctic is being attributed to increased moisture and heat fluxes transported to the region from lower latitudes

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Sea Level Speculation Threatens Property Owners

By Jim Steele – Re-Blogged From WUWT

Director emeritus Sierra Nevada Field Campus, San Francisco State University and author of Landscapes & Cycles: An Environmentalist’s Journey to Climate Skepticism

Pacifica California, just south of San Francisco, is my adopted hometown of 25 years. It has garnered national attention as an icon of dangerous sea level rise as eroding cliffs dangled homes over ocean bluffs (discussed in a WUWT post a few years ago). To the delight of property owners and the dismay of environmental extremists, I became a member of Pacifica’s Community Working Group on Sea Level Rise. Governor Jerry Brown’s California Coastal Commission has advised coastal cities to consider that by the year 2100 we should expect a range of sea level rise from 3 to 10 feet due to climate change. Based on such predictions the city will map flood zones, and properties in those zones could suffer from Coastal Commission restrictions that will devalue their property.

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Weekly Climate and Energy News Roundup #301

By Ken Haapala, President, Science and Environmental Policy Project

Brought to You by www.SEPP.org

Skepticism: In an essay titled “Be Skeptical of Those Who Treat Science as an Ideology” appearing in the Wall Street Journal, Dr. Sue Desmond-Hellmann discusses the difference between anti-science and skepticism, and the difference between denialism and skepticism. As an oncologist, faced with treating patients dying with cancer, Dr. Desmond-Hellmann recognized the importance of honesty and integrity in building trust with her patients. She writes: [Boldface added.]

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Glaciers and Sea Level Rise

By Andy May – Re-Blogged From http://www.WattsUpWithThat.com

This is the seventh and last post in my series on the hazards of climate change. In this post we examine the effects of climate change on glaciers and sea level rise. The first six examined the effect of humans on the environment, the effect of the growing human population, climate change and the food supply, the cost of global warming, the effect of man and climate change on extinctions, climate (or weather) related deaths, and extreme weather and climate change.

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