Author Archives: ptbrown31

This video is a visual explanation of meteorological Skew-T, Log-P sounding diagrams (aka thermodynamic diagrams)

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Why is concern about global warming so politically polarized?

As a climate scientist, I often hear it bemoaned that the public discussion of human-caused global warming is so politically polarized (Pew Research, 2019). The argument goes that global warming is simply a matter of pure science and thus there … Continue reading

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Daily, Seasonal, Annual and Decadal Temperature Variability on a Single Graph

The graph above is a record of temperature from 1950-2017 for New York City. What is unique about this graph is that it shows daily, seasonal, annual and decadal temperature variability on a single Y-axis, revealing how their magnitudes compare. … Continue reading

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El Nino’s influence the upcoming season’s global land temperatures

The El-Niño Southern Oscillation (ENSO) is the preeminent mode of global climate variability on timescales of months to several years. El Niño events cause temporary elevations in global average temperatures, and in the context of background global warming from increasing … Continue reading

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Does the IPCC say we have until 2030 to avoid catastrophic global warming?

In late 2018 the Intergovernmental Panel on Climate Change (IPCC) released a report on the impacts associated with global warming of 1.5°C (2.7°F) above preindustrial levels (as of 2019 we are at about 1.0°C above pre-industrial levels) as well as … Continue reading

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California fires and Global Warming’s influence on lack of moisture

This autumn has been very dry in California and this has undoubtedly increased the chance of occurrence of the deadly wildfires that the state is seeing. When assessing the influence of global warming (from human burning of fossil fuels) on … Continue reading

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Revisiting a Claim of Reduced Climate Sensitivity Uncertainty

Nature has published a Brief Communications Arising between us (Patrick Brown, Martin Stolpe, and Ken Caldeira) and Peter Cox, Femke Nijsse, Mark Williamson and Chris Huntingford; which is in regards to their paper published earlier this year titled “Emergent constraint on … Continue reading

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Signal, Noise and Global Warming’s Influence on Weather

Human-caused climate change from increasing greenhouse gasses is expected to influence many weather phenomena including extreme events. However, there is not yet a detectable long-term change in many of these extreme events, as is recently emphasized by Roger Pielke Jr. in … Continue reading

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The leverage of the current moment on the long-term trajectory of the climate

Below is a talk I gave at the “Bay Area Regional Climate Emergency Town Hall” in Berkeley, CA on August 24th, 2018 titled “The leverage of the current moment on the long-term trajectory of the climate”.    

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Contemporary Global Warming placed in geological context

Below is a rough comparison of contemporary Global Warming and estimates of past temperature change. This is a visualization in the vein of this plot on Wikipedia. Uncertainties increase substantially as estimates go back further in time. Time resolution also … Continue reading

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