Prof. Andrew Turner, PhD

Conferences, workshops and seminars:

Note that lectures given in the context of training activities or summer schools are listed on the teaching page. All presentations are in person unless otherwise stated

2025

2024

2023

2022

2021

  • International Symposium on Tropical Meteorology (INTROMET-2021) on CHANGING CLIMATE: CONSEQUENCES AND CHALLENGES (C4-21), organised by Cochin University of Science & Technology and the Indian Meteorological Society, 23-26 November 2021, online:
  • Invited speaker at the opening ceremony of the Climate modelling & greenhouse gases (GHGs) training for early career researchers event, organised by British High Comission Kuala Lumpur and Penang Green Council, 15 October 2021, online |
    Speaker lineup
    Malaysia speaker lineup
    • Talk on Linking global to regional climate change (Chapter 10 in the IPCC AR6 WGI report)
  • Speaker at WCRP workshop on attribution of multi-annual to decadal changes in the climate system, 22-24 September 2021, online:
  • Speaker at 2021 RMetS/NCAS Atmospheric Science Conference Atmospheric Science for Solutions (virtual)
    • Short talk presentation on day one (Net-zero): Orographic Rainfall Processes in India - Results of the IMPROVE Project (in Tropical Meteorology 1 session) | YouTube recording |
      Abstract
      Much of the focus on Indian weather and climate research is on the Indian monsoon, which supplies 80% of annual rainfall. However, less attention is paid to the spatial variations in rainfall and controls exerted on weather by the regional orography - both in the summer and winter periods. The IMPROVE project (Indian Monsoon Precipitation over Orography: Verification and Enhancement of understanding) is motivated to understand the effects of orography on Indian precipitation as part of the diurnal cycle of convection, as well as its role in extreme events. IMPROVE considers two focal regions. The Western Ghats, which intercept the monsoon flow across the Arabian Sea, receive some of the most frequent and heaviest rainfall during summer as well as being subject to extremes such as the 2018 Kerala floods. Meanwhile, the Himalayas play a vital role in separating dry midlatitude flows from tropical airmasses and are subject to extremes during the summer monsoon, as well as in winter due to the passage of western disturbances - cyclonic storms propagating on the subtropical westerly jet. This presentation summarizes the key results of IMPROVE. Firstly, we examine the impact of orography on the observed convective diurnal cycle and assess its simulation in models at a range of resolutions including convection-permitting scales. MetUM and WRF model experiments are used to identify key mechanisms and test their capability at simulating scale interactions between forcing at the large scale from the BSISO and newly identified regimes of on- and offshore convection near the Western Ghats. An additional aspect to this work is the construction of a two-layer analytical model to test the behaviour of sheared flow perpendicular to a ridge analogous to the Western Ghats. Secondly, the role of orography in extreme events is considered. For the Western Ghats, this focuses on the interaction between monsoon low-pressure systems and the southwesterly flow in enhancing local rainfall, a key mechanism in the Kerala floods of 2018. For the Himalayas, we focus on characterising interactions between tropical lows and western disturbances in enhancing the orographic precipitation, in which four key types of interaction are identified. IMPROVE works towards a deeper understanding of orographic rainfall and its extremes over India and uncovering why such mechanisms may be poorly represented in models.
    • Oral presentation in Climate breakout session on day two (Adaptation): The effects of climate change on the world's monsoons | YouTube recording |
      Abstract
      Monsoons supply most of the rainfall to large regions of the tropics and affect the lives of billions of people. This talk reviews the latest assessments of monsoon climate change, including progress over generations of climate models. Observed rainfall trends in the global monsoon are discussed, as well as attribution to anthropogenic factors including aerosol emissions, which lead to considerable uncertainty. The latest future projections are presented, including from the recent CMIP6 models, which feature larger climate sensitivities than their predecessors. As we look forward to the release of the IPCC Sixth Assessment report, the major uncertainties in near-term future projections are also discussed, including the roles of coupled modes of internal variability and aerosol emissions patterns, with a focus on the South Asian monsoon region.
  • Invited speaker at Cambridge TwoRains (winter rain, summer rain: adaptation, climate change, resilience and the Indus civilisation) conference. Day focuses on Weather, climate and palaeoclimate, 25 May 2021 (online): Monsoon climate variability and change in South Asia
  • Invited speaker at NCAS national seminar series. The Asian monsoon and climate change. Online, 13 January 2021.

2020

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