Category Archives: open source scientific software

Ductless Minisplits in Blizzard, 2017-02-09

(Updated, 11th February 2017, 16:15 EST) We heat and cool our home with Fujitsu `ductless minisplit` air source heat pumps. But this is New England, and it’s winter. A common question is how do they do under winter conditions? Well, … Continue reading

Posted in American Association for the Advancement of Science, American Meteorological Association, American Statistical Association, AMETSOC, Anthropocene, atmosphere, attribution, being carbon dioxide, carbon dioxide, CleanTechnica, climate, climate change, climate disruption, demand-side solutions, efficiency, global warming, Hyper Anthropocene, marginal energy sources, Massachusetts Clean Energy Center, meteorological models, meteorology, National Center for Atmospheric Research, NCAR, New England, NOAA, nor'easters, oceanic eddies, oceanography, open data, open source scientific software, risk, the right to know, water vapor | Leave a comment

The Azimuth Climate Data Backup Project, in association with ClimateMirror

(Updated the afternoon of 3rd February 2017.) The Azimuth Climate Data Backup Project, operating in association with ClimateMirror, is being funded via the Kickstarter available at this link. Give what you can. Thanks! See our goal statement. This is all … Continue reading

Posted in American Association for the Advancement of Science, citizen science, civilization, climate, climate change, climate data, climate disruption, climate education, climate justice, Climate Lab Book, cynicism, denial, Donald Trump, education, EIA, ethics, evidence, fear uncertainty and doubt, forecasting, fossil fuels, Global Carbon Project, global warming, greenhouse gases, Hyper Anthropocene, leaving fossil fuels in the ground, NASA, NOAA, open data, open source scientific software, rationality, reason, reasonableness, risk, science, science denier, science education, smart data, statistics, the right to know, the tragedy of our present civilization, UU, ``The tide is risin'/And so are we'' | Leave a comment

Repaired R code for Markov spatial simulation of hurricane tracks from historical trajectories

I’m currently studying random walk and diffusion processes and their connections with random fields. I’m interested in this because at the core of dynamic linear models, Kalman filters, and state-space methods there is a random walk in a parameter space. … Continue reading

Posted in American Meteorological Association, American Statistical Association, AMETSOC, Arthur Charpentier, atmosphere, diffusion, diffusion processes, dynamic linear models, dynamical systems, environment, geophysics, hurricanes, Kalman filter, Kerry Emanuel, Lévy flights, Lorenz, Markov chain random fields, mathematics, mathematics education, maths, MCMC, mesh models, meteorological models, meteorology, model-free forecasting, Monte Carlo Statistical Methods, numerical analysis, numerical software, oceanography, open data, open source scientific software, physics, random walk processes, random walks, science, spatial statistics, state-space models, statistical dependence, statistics, stochastic algorithms, stochastics, time series | Leave a comment

data.table

R provides a helpful data structure called the “data frame” that gives the user an intuitive way to organize, view, and access data.  Many of the functions that you would us… Source: Intro to The data.table Package

Posted in big data, data science, engineering, numerical analysis, numerical software, numerics, open source scientific software, R, smart data, statistics | Leave a comment

“Allocating a 2° C cumulative carbon budget to countries”: Gignac and Matthews

Abstract Recent estimates of the global carbon budget, or allowable cumulative CO2 emissions consistent with a given level of climate warming, have the potential to inform climate mitigation policy discussions aimed at maintaining global temperatures below 2° C. This raises … Continue reading

Posted in adaptation, Anthropocene, Boston Ethical Society, bridge to nowhere, carbon dioxide, Carbon Tax, chance, chemistry, citizen science, citizenship, civilization, clean disruption, climate, climate change, climate disruption, climate education, climate justice, compassion, conservation, consumption, decentralized energy, demand-side solutions, destructive economic development, ecology, education, energy, energy reduction, environment, ethics, forecasting, fossil fuel divestment, fossil fuels, geophysics, global warming, humanism, Hyper Anthropocene, ignorance, investment in wind and solar energy, IPCC, meteorology, mitigation, open source scientific software, physical materialism, physics, population biology, prediction, rationality, reasonableness, risk, science, science education, scientific publishing, sociology, solar power, sustainability, temporal myopia, the right to know, time series, UNFCCC, UU Humanists, wind power | Leave a comment

Comprehensive and compact tutorial on Petris’ DLM package in R; with an update about Helske’s KFAS

A blogger named Lalas produced on Quantitative Thoughts a very comprehensive and compact tutorial on the R package dlm by Petris. I use dlm a lot. Unfortunately, Lalas does not give details on how the SVD is used. They do … Continue reading

Posted in Bayes, Bayesian, dynamic linear models, dynamical systems, forecasting, Kalman filter, mathematics, maths, multivariate statistics, numerical software, open source scientific software, prediction, R, Rauch-Tung-Striebel, state-space models, statistics, stochastic algorithms, SVD, time series | Leave a comment

Thank You

Originally posted on Open Mind:
To all the readers who make this blog worth writing: Thank you. Thank you for sharing my work. One of the things that makes me proud is that often my blog posts are used as…

Posted in astrophysics, citizen science, climate change, climate data, climate disruption, climate education, climate models, differential equations, dynamical systems, ecology, ensembles, forecasting, games of chance, geophysics, global warming, hiatus, Hyper Anthropocene, IPCC, mathematics, mathematics education, maths, meteorology, model comparison, new forms of scientific peer review, open data, open source scientific software, physics, probabilistic programming, probability, rationality, reasonableness, reproducible research, risk, science, science education, spatial statistics, statistics, Tamino, the right to know, time series, transparency | Leave a comment

Professor James Hansen responds and explains:

The recent paper by Hansen, Soto, and others has caused a stir, as I suspect it was intended to do so. I posted about this paper earlier. Now Professor Hansen has responded to the critics of his team’s work and … Continue reading

Posted in Anthropocene, arXiv, astrophysics, bifurcations, biology, bridge to nowhere, carbon dioxide, Carbon Tax, citizenship, civilization, clean disruption, climate, climate change, climate disruption, climate models, COP21, denial, disingenuity, dynamical systems, ecology, education, environment, ethics, forecasting, fossil fuel divestment, fossil fuels, geophysics, global warming, investment in wind and solar energy, IPCC, James Hansen, maths, meteorology, NASA, NCAR, new forms of scientific peer review, NOAA, oceanography, open source scientific software, physics, Principles of Planetary Climate, probability, rationality, reasonableness, science, science education, sea level rise, temporal myopia, the right to know, time series, WAIS, zero carbon | 1 Comment

On the Climate Club

But if the other advanced nations had a stick — a tariff of 4 percent on the imports from countries not in the “climate club” — the cost-benefit calculation for the United States would flip. Not participating in the club … Continue reading

Quote | Posted on by | 2 Comments

The CWSLab workflow tool: an experiment in community code development

Originally posted on Dr Climate:
Give anyone working in the climate sciences half a chance and they’ll chew your ear off about CMIP5. It’s the largest climate modelling project ever conducted and formed the basis for much of the IPCC…

Posted in climate, climate education, climate models, computation, differential equations, dynamical systems, environment, forecasting, geophysics, global warming, IPCC, mathematics, mathematics education, maths, meteorology, model comparison, NCAR, oceanography, open source scientific software, physics, Principles of Planetary Climate, Python 3, rationality, reasonableness, science, science education, state-space models, statistics, time series, transparency | Leave a comment

“el Niño and the Non-Spherical Cow”

Originally posted on Open Mind:
Most people who follow climate science are aware that one of the natural factors which affects global temperate is the el Niño Southern Oscillation (ENSO). It’s a mode of natural variation in the tropical eastern…

Posted in Anthropocene, bridge to nowhere, carbon dioxide, Carbon Tax, civilization, clean disruption, climate, climate change, climate disruption, climate education, ecology, economics, ENSO, ethics, forecasting, global warming, meteorology, NCAR, NOAA, oceanography, open data, open source scientific software, physics, politics, rationality, Ray Pierrehumbert, reasonableness, reproducible research, risk, science, science education, sea level rise, statistics, stochastics, temporal myopia, time series, transparency | Leave a comment

Earth Day, my hope

Posted in carbon dioxide, Carl Sagan, Charles Darwin, citizen science, citizenship, civilization, clean disruption, climate, climate change, climate education, compassion, conservation, Darwin Day, demand-side solutions, ecology, economics, education, efficiency, energy reduction, environment, ethics, forecasting, fossil fuel divestment, geophysics, history, humanism, investing, investment in wind and solar energy, IPCC, mathematics, maths, meteorology, NCAR, NOAA, oceanography, open data, open source scientific software, physics, politics, population biology, Principles of Planetary Climate, privacy, probit regression, R, rationality, Ray Pierrehumbert, reasonableness, reproducible research, risk, science, science education, scientific publishing, Scripps Institution of Oceanography, sociology, the right to know, Unitarian Universalism, UU Humanists, WHOI, wind power | Leave a comment

Dynamic Linear Models package, dlmodeler

I’m checking out the dlmodeler package in R for a work project. It is accompanied by textbooks, G. Petris, S. Petrone, P. Campagnoli, Dynamic Linear Models with R, Springer, 2009 and J. Durbin, S. J. Koopman, Time Series Analysis by … Continue reading

Posted in Bayesian, geophysics, mathematics, maths, oceanography, open source scientific software, Python 3, R, science, sea level rise, state-space models, statistics, stochastic algorithms, time series | Leave a comment

Bulletin of the Atomic Scientists, online Nuclear Notebook

In the days before having just (!) climate change with which to concern ourselves, the threat of nuclear weapons loomed large. Although the threat is not extinguished by any means, it is diminished. For example, the United States and Russia … Continue reading

Posted in Bulletin of the Atomic Scientists, Carl Sagan, citizenship, civilization, climate, ecology, ethics, geophysics, meteorology, nuclear weapons, open data, open source scientific software, rationality, reasonableness, risk, science | Leave a comment

The designers of our climate

Originally posted on …and Then There's Physics:
Okay, I finally succumbed and actually waded through some of the new paper by Monckton, Soon, Legates & Briggs called Why models run hot: results from an irreducibly simple climate model. I…

Posted in astrophysics, bridge to nowhere, carbon dioxide, carbon dioxide capture, carbon dioxide sequestration, Carbon Tax, Carl Sagan, citizenship, civilization, climate, climate change, climate education, differential equations, ecology, economics, engineering, environment, ethics, forecasting, fossil fuel divestment, geoengineering, geophysics, humanism, IPCC, mathematics, mathematics education, maths, meteorology, methane, NASA, NCAR, Neill deGrasse Tyson, NOAA, oceanography, open data, open source scientific software, physics, politics, population biology, Principles of Planetary Climate, probabilistic programming, R, rationality, reasonableness, reproducible research, risk, science, science education, scientific publishing, sociology, solar power, statistics, testing, the right to know | Leave a comment

Codium fragile, for Saturday, 17th January 2015

With today’s post, I’m beginning a new tradition at 667 per cm, posting a potpourri of short observations collected during the week, not necessarily having dense citations to work which inspired them. (Although if interested, please do ask and I’ll … Continue reading

Posted in art, arXiv, astronomy, astrophysics, atheism, carbon dioxide, carbon dioxide capture, Carbon Tax, Carl Sagan, chemistry, citizen science, citizenship, civilization, climate, climate change, climate education, conservation, consumption, decentralized electric power generation, demand-side solutions, ecology, economics, energy, engineering, environment, forecasting, fossil fuel divestment, geoengineering, history, humanism, investment in wind and solar energy, IPCC, meteorology, methane, microgrids, NASA, Neill deGrasse Tyson, new forms of scientific peer review, NOAA, notes, nuclear power, oceanography, open data, open source scientific software, physics, politics, Principles of Planetary Climate, rationality, reasonableness, reproducible research, science, science education, scientific publishing, sociology, the right to know | Leave a comment