SAM MORRELL

Astrophysics
Environmental Intelligence
Computer Science

Searching for: radiative

Radiative Transfer in Planetary Atmospheres: An Overview

January 1, 2015

A little while ago I got carried away on a little post which discussed a really cool little bit of physics called radiative transfer. As I said then, radiative transfer is a technique that you can use to study how energy, in the form of electromagnetic radiation, moves through material. In that post, which you can...

The Basics of Radiative Transfer

April 28, 2014

It’s deep in exam season for me at the moment, which means that if you try talking to me, chances are that I’ll have my head in a book. I talked a while back about solving radiative transfer problems with Monte Carlo methods, but I never actually went very far into how radiative transfer works....

Building the Light Pollution Matrix

February 9, 2024

Earlier this week, I had the privilege of recording an episode of a Restoring Darkness podcast with Michael Colligan and Mark Baker. The topics of our conversation ranged from light pollution activism, the role of the lighting industry in solving light pollution, and how we at the Environment and Sustainability Institute and Departments of Physics...

About Me

August 12, 2018

I am a Research Fellow at the University of Exeter, currently applying my training in astrophysics to help better understand, and hopefully begin to solve, the pressing ecological crisis caused by artificial light at night (ALAN). I lead the development of our Monte Carlo Radiative Transfer model, whose outputs we correlate with measurements of animal...

My Research

May 26, 2015

My research interests span astrophysics and environmental intelligence. My astrophysics research currently focusses on better measuring the characteristics of stars from large, cutting-edge photometric and astrometric datasets. I also apply this knowledge to the analysis of datasets for a large variety of environmental sources, from satellite observations to measurements of animal beahviour, to better understand...

Modeling Atmospheres with the Unified Model

February 24, 2015

In my last couple of posts I’ve been going through some of the basic principles of fluid mechanics. From some of the basic approximations that make the equation possible to analytically solve in this post, to some more specialised theory in the context of planetary systems in this post. In these posts we’ve been slowly...

Gambling with Statistics – Monte Carlo Methods

July 20, 2013

Hey all! In my recent work I’ve been using numerical simulations involving radiative transfer, which basically  means transferring energy via radiation such as light; in the form of photon packets. The way these simulations are run is via a method known quite widely in the physics world called ‘Monte Carlo Methods’. It took me a...

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