Andrew H MacDougall

Biographic Data

ID7992771
NAMEAndrew H MacDougall
GIVEN NAMESAndrew H
FAMILY NAMEMacDougall
SIGNATUREMACDOUGALL A H
AFFILIATIONSSt. Francis Xavier University
ORCID0000-0001-7899-9940
VERIFIEDYes
TOTAL WORKS9
TOTAL CITATIONS0
AUTHOR COUNT9
EDITOR COUNT0
FIRST PUBLICATION YEAR2015
LATEST PUBLICATION YEAR2024
H-INDEX0

  • Projecting atmospheric N 2 O rise until the end of the 21st century: An Earth System Model study

    Open AccessMakcim De Sisto, Christopher J Somes et al.ARTICLEEnvironmental Research Letters2024

    Nitrous Oxide (N 2 O) is a potent greenhouse gas with a centennial-scale lifetime that contributes significantly to global warming. It is emitted from natural and anthropogenic sources. In nature, N 2 O is released mainly from nitrification and denitrification from the ocean and terrestrial systems. The use of agricultural fertilizers has significantly increased the emission of N 2 O in the past century. Here we present, to our knowledge, the fir…

  • Detecting climate milestones on the path to climate stabilization

    Open AccessAndrew H MacDougall, Joeri Rogelj et al.ARTICLEEnvironmental Research Letters2024

    The era of anthropogenic climate change can be described by defined climate milestones. These milestones mark changes in the historic trajectory of change, and include peak greenhouse gas emissions, peak greenhouse gas concentration, deceleration of warming, net-zero emissions, and a transition to global cooling. However, given internal variability in the Earth system and measurement uncertainty, definitively saying that a milestone has passed re…

  • Regional temperature extremes and vulnerability under net zero CO 2 emissions

    Open AccessLiam Cassidy, Andrew D King et al.ARTICLEEnvironmental Research Letters2023

    Signatories to the Paris Agreement have pledged to keep global warming to well below 2 °C above pre-industrial levels and preferably below 1.5 °C above pre-industrial levels. Beyond over-shooting Paris Agreement warming levels followed by net negative emissions, achieving a state of net zero carbon dioxide emissions is required to satisfy Paris Agreement warming goals. Research on climate changes under net zero CO 2 emissions is very limited to d…

  • Substantial regional climate change expected following cessation of CO 2 emissions

    Open AccessAndrew H MacDougall, Josie Mallett et al.ARTICLEEnvironmental Research Letters2022

    The zero emissions commitment (ZEC) is the expected temperature change following the cessation of anthropogenic emissions of climate altering gases and aerosols. Recent model intercomparison work has suggested that global average ZEC for CO 2 is close to zero. However there has thus far been no effort to explore how temperature is expected to change at spatial scales smaller than the global average. Here we analyze the output of nine full complex…

  • Estimated climate impact of replacing agriculture as the primary food production system

    Open AccessAndrew H MacDougall, Joeri Rogelj et al.ARTICLEEnvironmental Research Letters2021

    Global agriculture is the second largest contributor to anthropogenic climate change after the burning of fossil fuels. However the potential to mitigate the agricultural climate change contribution is limited and must account for the imperative to supply food for the global population. Advances in microbial biomass cultivation technology have recently opened a pathway to growing substantial amounts of food for humans or livestock on a small frac…

  • Quantifying the probability distribution function of the transient climate response to cumulative CO 2 emissions

    Open AccessLynsay Spafford, Andrew H MacDougallARTICLEEnvironmental Research Letters2020

    The Transient Climate Response to Cumulative CO 2 Emissions (TCRE) is the proportionality between global temperature change and cumulative CO 2 emissions. The TCRE implies a finite quantity of CO 2 emissions, or carbon budget, consistent with a given temperature change limit. The uncertainty of the TCRE is often assumed be normally distributed, but this assumption has yet to be validated. We calculated the TCRE using a zero-dimensional ocean diff…

  • Impact of deforestation on subsurface temperature profiles: Implications for the borehole paleoclimate record

    Open AccessAndrew H MacDougall, Hugo BeltramiARTICLEEnvironmental Research Letters2017

    Subsurface temperature profiles measured in boreholes are one of the important archives of paleoclimate data for reconstructing the climate of the past 2000 years. Subsurface temperatures are a function of past ground surface temperatures (GST), however GSTs are influenced both by changes in land-use and changes in regional climate. Thus the history of deforestation at borehole sampling locations represents a potential uncertainty in the reconstr…

  • On the proportionality between global temperature change and cumulative CO 2 emissions during periods of net negative CO 2 emissions

    Open AccessKirsten Zickfeld, Andrew H MacDougall et al.ARTICLEEnvironmental Research Letters2016

    Recent research has demonstrated that global mean surface air warming is approximately proportional to cumulative CO2 emissions. This proportional relationship has received considerable attention, as it allows one to calculate the cumulative CO2 emissions ('carbon budget') compatible with temperature targets and is a useful measure for model inter-comparison. Here we use an Earth system model to explore whether this relationship persists during p…

  • Sensitivity of carbon budgets to permafrost carbon feedbacks and non-CO 2 forcings

    Open AccessAndrew H MacDougall, Kirsten Zickfeld et al.ARTICLEEnvironmental Research Letters2015

    The bar representing the carbon budget for the 2 C temperature change target for the model configuration with non-CO 2 forcings from figure 4(a) was mislabelled. The bar was mistakenly labelled with the value for RCP 8.5 instead of RCP 6.0. The correct value is 810 Pg C. The corrected figure follows