A5077090911- Atmospheric and Environmental Gas Dynamics
- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Arctic and Antarctic ice dynamics
- Climate variability and models
- Oceanographic and Atmospheric Processes
- Meteorological Phenomena and Simulations
- Cryospheric studies and observations
- Climate Change Policy and Economics
- Methane Hydrates and Related Phenomena
- Climate Change and Health Impacts
- Flood Risk Assessment and Management
Royal Scientific Society
2022-2025
British Antarctic Survey
2007-2008
University of Cambridge
2002-2008
National Centre for Atmospheric Science
2006-2008
Abstract Observation‐based and modeling studies have identified the Eastern Mediterranean Middle East (EMME) region as a prominent climate change hotspot. While several initiatives addressed impacts of in parts EMME, here we present an updated assessment, covering wide range timescales, phenomena future pathways. Our assessment is based on revised analysis recent observations projections extensive overview scientific literature causes effects regional change. Greenhouse gas emissions EMME...
Abstract This article describes the development and evaluation of U.K.’s new High-Resolution Global Environmental Model (HiGEM), which is based on latest climate configuration Met Office Unified Model, known as Hadley Centre version 1 (HadGEM1). In HiGEM, horizontal resolution has been increased to 0.83° latitude × 1.25° longitude for atmosphere, 1/3° globally ocean. Multidecadal integrations lower-resolution HadGEM, are used explore impact fidelity simulations. Generally, SST errors reduced...
Abstract. The EU CANDIDOZ project investigated the chemical and dynamical influences on decadal ozone trends focusing Northern Hemisphere. High quality long-term data sets, satellite-based as well ground-based, meteorological reanalyses from ECMWF NCEP are used together with advanced multiple regression models atmospheric to assess relative roles of chemistry transport in stratospheric changes. This overall synthesis individual analyses shows clearly one common feature NH mid latitudes...
Abstract The cause of the observed mid‐latitude decline in ozone a 20‐year integration stratospheric chemical transport model forced by European Centre for Medium‐Range Weather Forecasts analyses years 1979 to 1998 is investigated. A very simple scheme used which includes no interannual variation so that any modelled variability, or trend, must arise from changes meteorology. does show downward trend many features are reproduced, especially between middle 1980s and early 1990s. detailed...
This paper reflects the discussions of early and mid-career researchers (EMCRs) during World Climate Research Programme Open Science Conference 2023 EMCRs Symposium, to advance climate knowledge for greater transformative power in society impact on policy-making. These focused three key priority challenges: how produce robust, usable, used information at local scale; address research gaps Global South; could support policy-making with information. We present here our perspective these major...
To explain regional trends and long time variability of ozone the understanding quantie cation dynamical mechanisms ine uencing zonal asymmetry is essential. Therefore we assess here relationship between total North Atlantic Oscillation (NAO), one dominant modes in European sector using two different model systems conjunction with same simplie ed chemistry. One Met Ofe ce Unie Model, which a comprehensive general circulation forced by prescribed sea-surface temperatures only. The other...
The cause of the observed mid-latitude decline in ozone a 20-year integration stratospheric chemical transport model forced by European Centre for Medium-Range Weather Forecasts analyses years 1979 to 1998 is investigated. A very simple scheme used which includes no interannual variation so that any modelled variability, or trend, must arise from changes meteorology. does show downward trend many features are reproduced, especially between middle 1980s and early 1990s. detailed statistical...
We derive characteristic spatial patterns, and their temporal evolution, for total ozone during January, February March in the northern hemisphere from a twenty-year integration of chemistry-transport model. Our aim is to identify factors influencing variability (and decadal-scale trends) develop proxies inclusion statistical models trend. The version model set up so that interannual variability, any trends, are driven purely by dynamical forcing fields. five leading Empirical Orthogonal...
We examine the sensitivity of modelled climate third generation Hadley Centre model to changes in parametrization surface and boundary‐layer fluxes under stable stratification. Replacing model's standard with one which decrease more rapidly increasing stability generates statistically‐significant 500 hPa height. The largest are seen across North Atlantic Pacific occur during Northern Hemisphere summer, when persistent atmospheric boundary layers form over western sides these oceans. response...