by Daniel Brouse Abstract Nighttime minimum temperatures are increasing in many regions at a faster rate than daytime maximum temperatures, representing a critical but underappreciated dimension of climate change. Because human and ecosystem recovery from heat stress depends heavily on nocturnal cooling, this trend has important implications for health outcomes, agriculture, energy demand, and ecological […]
Tag Archives: climate change
Elevated Nighttime Minimum Temperatures and the Intensification of Heat-Health Risk
Posted in Environment, Global Warming, health and wellness, Science
Tagged climate change
Comments closed
Ozone References
References Intergovernmental Panel on Climate Change (2021). Climate Change 2021: The Physical Science Basis. Cambridge University Press. Intergovernmental Panel on Climate Change (2022). Climate Change 2022: Impacts, Adaptation and Vulnerability. Cambridge University Press. World Meteorological Organization. (2024). State of the Global Climate 2024. Feng, Z., De Marco, A., Anav, A., et al. (2022). Economic losses […]
A New Way to Understand Earth’s Accelerating Climate System
Climate Change Threshold-Driven Dynamics Public Access Edition “This looks complicated.” True—it is complicated, and that’s part of the problem. The climate system involves interacting feedbacks across the atmosphere, oceans, biosphere, and cryosphere, so it can’t really be reduced to a single mechanism or slogan without losing important detail. That’s exactly why we created this version as a public-access […]
Overview of Climate Regime Shift Analysis
From the Industrial Revolution through much of the 20th century, several slowly evolving climate-related indicators exhibited characteristic response times on the order of a century (~10² years), although these vary substantially by variable and data availability. By the 2020s, multiple independently observed Earth system components show accelerated trends with effective timescales in some cases compressing […]
A Unified State-Space Framework for Accelerating Earth System Energy Redistribution
The Climate Acceleration Index and Cross-Component Coherence in Ocean Heat Content, Sea Level, Marine Heatwaves, and Atmospheric Moisture Executive Summary The Earth’s climate system is undergoing a clear regime shift away from historically linear behavior toward accelerating nonlinear and compounding dynamics characterized by systematically shrinking effective doubling times. Multiple independent Earth system indicators demonstrate synchronized […]
A Unified Diagnostic of Earth System Energy Imbalance Across Ocean Heat Content, Sea Level Rise, Marine Heatwaves, and Atmospheric Moisture
SYNTHESIS FRAMEWORK Climate Acceleration Index (CAI): A Unified Diagnostic of Earth System Energy Imbalance Across Ocean Heat Content, Sea Level Rise, Marine Heatwaves, and Atmospheric Moisture Abstract We propose a unified diagnostic framework, the Climate Acceleration Index (CAI), that integrates multiple observational indicators of Earth system energy imbalance into a single nonlinear acceleration metric. The […]
Evidence for a Time-Varying Growth Rate in Global Ocean Heat Content from Two Independent Observational Datasets (1960–Present)
DISCOVERY (Results Paper) Abstract We apply a model-independent instantaneous doubling-time framework to global ocean heat content (OHC) from NOAA/NCEI and IAP/CAS datasets spanning 1960–present. Unlike traditional exponential or linear fits, we estimate the local growth rate directly from observational data. Both datasets show that time-varying exponential models significantly outperform linear and stationary exponential models. Residual […]
Instantaneous Doubling Time as a Non-Stationary Diagnostic of Ocean Heat Content Dynamics
METHODS (Framework Paper) Abstract This paper introduces a model-independent diagnostic for assessing temporal changes in ocean heat accumulation: the instantaneous doubling time of ocean heat content (OHC). Rather than fitting parametric exponential or linear growth models, the method estimates the local growth rate directly from observations using:k(t)=ddtlnH(t)k(t)=\frac{d}{dt}\ln H(t)k(t)=dtdlnH(t) and defines:Td(t)=ln2k(t).T_d(t)=\frac{\ln 2}{k(t)}.Td(t)=k(t)ln2. This transforms ocean heat […]
Shrinking Effective Doubling Time in Global Ocean Heat Content
Evidence from Time-Varying Growth Models in NOAA and IAP Observations (1960–Present) Introduction The Earth’s oceans are the planet’s primary heat reservoir, absorbing approximately 90% of the excess heat generated by anthropogenic greenhouse gas emissions. As a result, changes in ocean heat content (OHC) provide one of the most robust indicators of the Earth’s energy imbalance […]
Climate Regime Shift: From a Normal Distribution to a Right-Skewed Distribution
by Daniel Brouse Climate events that were once considered exceptionally rare are occurring with increasing regularity, lasting longer, and causing greater destruction. Introduction One of the most useful tools in science is the normal distribution, better known as the bell curve. It provides a simple way to visualize how observations are distributed around an average […]