“Without a protective ozone layer in the atmosphere, animals and plants could not exist, at least upon land. It is therefore of the greatest importance to understand the processes that regulate the atmosphere's ozone content.” This quote from the Swedish Royal Academy of Sciences – announcing the 1995 Nobel Prize for Chemistry to Paul Crutzen, Mario Molina, and F. Sherwood Rowland – remains relevant to this day. The more we study stratospheric ozone, the more we realise its importance not only

Almost half of the world's population rely on the Asian summer monsoon (ASM) precipitation for agriculture, energy, industry, and local water resources. Small changes in the onset, intensity, and duration of the ASM can result in considerable socio-economic impacts. An observed drying trend in ASM precipitation in the latter half of the 20th century opposed the anticipated impact of increasing greenhouse gas emissions, and has largely been attributed to increases in anthropogenic aerosol. Recent

Methane emissions have major impacts on atmospheric composition and radiative forcing of climate change. The MethaneSAT satellite, and its companion aircraft instrument, MethaneAIR, are new imaging spectrometers intended to contribute in a major way to solving this important problem. MethaneSAT will provide measurements on regional scales (~200 x 200 km) with high spatial resolution (~130 m x 450 m) and precision, while MethaneAIR has a swath width of 4.5 km and pixel size of 5 x 25m. The missio

The European Space Agency (ESA)’s Earth Explorer Aeolus was launched in August 2018 carrying the world’s first spaceborne wind lidar, the Atmospheric Laser Doppler Instrument (ALADIN). ALADIN uses a high spectral resolution Doppler wind lidar operating at an ultraviolet wavelength of 355 nm to measure profiles of line-of-sight wind component. ALADIN samples the atmosphere from 30 km altitude down to the Earth’s surface or to the level where the signal is attenuated by optically thick clouds. Bes

Urbanization and agriculture are well-known examples of how human activities inadvertently modify weather and climate. Advancing the understanding of the nexus among food, energy, and water systems has recently emerged as a new science frontier, and the research community started modeling urbanization and agricultural management in earth-system models to develop an integrated modeling tool for investigating relevant land-atmosphere interactions and agriculture and urban sustainability issues. Ho

Dr. Vogel is a research scientist in ECCC’s Climate Research Division since 2017 and investigates greenhouse gas emissions using atmospheric observations. In recent weeks, the global attention has been drawn towards methane mitigation. In this week’s seminar, Dr. Vogel will review ECCC research efforts on methane sources in Canada from provincial to site-scale. In many cases methane emissions have been found to follow a power-law with a small amount of super-emitters overly contributing to total

Equilibrium climate sensitivity (ECS), the global surface temperature increase to the radiative forcing caused by a doubling of atmospheric CO2 concentration, is the single number that describes the severity of long-term climate change. Global climate models have been an important tool for estimating ECS and understanding the relevant physics. Recent Coupled Model Intercomparison Project phase 6 (CMIP6) models simulated an ECS range of 1.8–5.6 ℃, with an upper end substantially higher than previ

These lectures are intended for a wide audience. The special colloquium will be held in Koffler House, room KP108, followed by four lectures held in Earth Science Basement, room ES B149. Refreshments will be served half an hour prior to the start of each lecture in the lobby, just outside the lecture room. All lectures will be 50 minutes.

2013 Noble Lectures

2013 Noble Lectures

2013 Noble Lectures

2013 Noble Lectures: A Special Colloquium

The first seminar of the 2011-2012 Atmospheric Physics Noble Seminar Series.

The first seminar of the 2011-2012 Atmospheric Physics Noble Seminar Series.

The fifth (and last) lecture in the Noble Lecture series hosted by the Atmospheric Physics group

The fifth (and last) lecture in the Noble Lecture series hosted by the Atmospheric Physics group

Thefourth lecture in the Noble Lecture series hosted by the Atmospheric Physics group

Thefourth lecture in the Noble Lecture series hosted by the Atmospheric Physics group

The third lecture in the Noble Lecture series hosted by the Atmospheric Physics group

The third lecture in the Noble Lecture series hosted by the Atmospheric Physics group

The second lecture in the Noble Lecture series hosted by the Atmospheric Physics group

The second lecture in the Noble Lecture series hosted by the Atmospheric Physics group

A special Physics colloquium and the first of the Noble Lecture Series hosted by the Atmospheric Physics Group

A special Physics colloquium and the first of the Noble Lecture Series hosted by the Atmospheric Physics Group

Atmospherics Phyics Noble seminar series

Atmospherics Phyics Noble seminar series

A Lecture Series on New Worlds, New Climates

A Lecture Series on New Worlds, New Climates