ESP

Europe/Rome 2021-03-04 15:00:00 2021-03-04 16:30:00 Improving our mechanistic understanding of the regional climate response to anthropogenic aerosols Lecture 2 of series on Environmental Meteorology: From the Fundamentals of Climate to Operational Applications Register in advance for this meeting: https://zoom.us/meeting/register/tJ0lcuyurDMrEtbfP9f16GRLzqF1AiT7PHN7 After registering, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it 4 Mar 2021

Europe/Rome 2021-03-11 15:00:00 2021-03-11 16:30:00 Convective Self-Aggregation and Climate Sensitivity in a Multi-Model Ensemble of Radiative-Convective Equilibrium Simulations Lecture 3 of series on Climate and weather: from fundamentals to operational applications Register in advance for this meeting: https://zoom.us/meeting/register/tJ0lcuyurDMrEtbfP9f16GRLzqF1AiT7PHN7 After registering, you will receive a confirmation email containing information about joining the meeting. Abstract: The Radiative-Convective Equilibrium Model Intercomparison Project (RCEMIP) is an intercomparison of multiple types of numerical models, including atmospheric general circulation models (GCMs), cloud-resolving models (CRMs), global cloud-resolving models (GCRMs), large eddy simulation models (LES), and single column models (SCMs), configured in radiative-convective equilibrium (RCE). RCE is an idealization of the tropical atmosphere that has long been used to study basic questions in climate science, and is employed here to investigated the response of clouds and convective activity to warming, cloud feedbacks and climate sensitivity, and the aggregation of convection and its role in climate. Results are presented from the RCEMIP ensemble of more than 30 different models. The robustness of the RCE state across the RCEMIP ensemble is assessed, in terms of mean profiles of temperature, humidity, and cloudiness, and the occurrence of self-aggregation is identified. While there are significant differences across the RCEMIP ensemble in the representation of humidity and cloudiness, nearly all models exhibit self-aggregation and there is agreement that self-aggregation acts to dry the atmosphere and reduce high cloudiness. The dependence of cloudiness and the degree of self-aggregation on SST and the resulting influence on the climate sensitivity of the RCE state is also compared across the RCEMIP ensemble. High clouds tend to rise and warm slightly with warming, and in a majority of models, decrease in extent. There is no clear tendency for either an increase or decrease in self-aggregation with warming, but changes in self-aggregation with warming partially explain the extreme spread in simulated climate sensitivities across the RCEMIP ensemble. Zoom Meeting ICTP pio@ictp.it 11 Mar 2021

Europe/Rome 2021-03-18 15:00:00 2021-03-18 16:30:00 The role of atmospheric weather noise in forcing the Atlantic Multidecadal Variability Lecture 4 of series on Climate and weather: from fundamentals to operational applications Register in advance for this meeting: https://zoom.us/meeting/register/tJ0lcuyurDMrEtbfP9f16GRLzqF1AiT7PHN7 After registering, you will receive a confirmation email containing information about joining the meeting. Abstract: The Atlantic Multidecadal Variability (AMV) modulates various climate features worldwide with enormous societal and economic implications, including variations in hurricane activity in the Atlantic, sea-level changes, West African and Indian monsoon rainfall, European climate, and hemispheric- scale surface temperature. Leading hypotheses regarding the nature and origin of AMV focus primarily on its links with oceanic and coupled ocean-atmosphere internal variability, and on its response to external forcing. The role of another possible process, that of atmospheric noise forcing of the ocean, has received less attention. This work addressed here by means of historical coupled simulations and diagnostic experiments, which isolate the influences of external and atmospheric noise forcings. Our findings show that external forcing is an important driver of the simulated AMV. They also demonstrate that weather noise is key in driving the simulated internal AMV in the southern part of the (0°-60°N) AMV region, and that weather noise forcing is responsible for up to 10%-20% of the multidecadal internal SST variability in some isolated areas of the sub-polar gyre region. Ocean dynamics independent from the weather noise forcing is found to be the dominant cause of multidecadal SST in the northern part of the AMV region. Zoom Meeting ICTP pio@ictp.it 18 Mar 2021

Europe/Rome 2021-03-25 15:00:00 2021-03-25 16:30:00 Using economics and big data to measure the costs of climate change Lecture 5 of series on Climate and weather: from fundamentals to operational applications Register in advance for this meeting: https://zoom.us/meeting/register/tJ0lcuyurDMrEtbfP9f16GRLzqF1AiT7PHN7 After registering, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it 25 Mar 2021

Europe/Rome 2021-03-15 07:00:00 2021-03-17 21:00:00 Workshop on Indian Ocean Variability and Teleconnections | (smr 3592) Deadline extended to 7 March 2021 An ICTP Virtual Meeting This workshop will focus on observational and modelling studies of the Indian Ocean climate and its variability and telconnections to other regions across sub-seasonal through multi-decadal time scales.   The Indian Ocean hosts two important modes of interannual variability: the Indian Ocean Basin Mode and the Indian Ocean Dipole. Both modes have two-way interactions with ENSO, but they may also exist independently. Through their influence on rainfall anomalies, they have important teleconnections to other tropical and extratropical regions.  At sub-seasonal scales, organized convection over the Indian Ocean occurs during the early phases of the MJO mode, producing global teleconnections. ENSO teleconnections to the Indian Ocean also change on sub-seasonal timescales. At decadal scales, the Indian Ocean shows important variability associated with a strong warming trend, which affects global decadal variability and regional climate change. Recent findings on these and related topics will be discussed in invited presentations, panel discussions and breakout groups, organized in sessions covering themes common to different time scales.   Topics: Observations and diagnostics of oceanic and atmospheric variability in the Indian Ocean basin Tropical and extratropical teleconnections from and into the Indian Ocean at intra-seasonal to decadal scales: similarity and differences across time scales Simulation of Indian Ocean variability and its teleconnections in climate models, and predictability arising from Indian Ocean teleconnections   Speakers include: K. ASHOK, University of Hyderabad, India M.A. BALMASEDA, ECMWF, UK W. HAN, University of Colorado, USA S. HARDIMAN, Met Office, UK S. HENDERSON, University of Wisconsin, USA H. HENDON, Bureau of Meteorology, Australia S. HU, Columbia University, USA I.-S. KANG, Second Institute of Oceanography, China R.M. KOLL, IITM, India P. KUSHNER, University of Toronto, Canada C. UMMENHOFER, WHOI, USA F. VITART, ECMWF, UK J. WANG, Stony Brook University, USA T. WOOLLINGS, University of Oxford, UK P. YADAV, ETH Zurich, Switzerland L. ZHANG, University of Colorado, USA   Registration: There is no registration fee. Online - ICTP pio@ictp.it 15 Mar 2021 - 17 Mar 2021

Europe/Rome 2021-05-10 08:00:00 2021-05-19 22:00:00 Joint ICTP-IAEA Workshop on the Use of Cosmic Ray Neutron Sensor for Soil Moisture Management and Validation of Remote Sensing Soil Moisture Maps | (smr 3574) Online - ICTP pio@ictp.it 10 May 2021 - 19 May 2021

Europe/Rome 2021-06-14 08:00:00 2021-07-02 22:00:00 Joint Summer School on Modelling Tools for Sustainable Development | (smr 3581) Online - ICTP pio@ictp.it 14 Jun 2021 - 2 Jul 2021