*Please note that the currently available programme is a draft and subject to changes.
*Programme update has been made since April 21, 2016.
IRS 2016 includes sessions on the following topics:
1. Topical Union Session
Conveners: Werner Schmutz
Keynote speeches (by invitation)
2: Radiative Transfer Theory and Modeling
Conveners: Bernhard Mayer, Alexander Marshak
Papers on radiative transfer (RT) theory and its atmospheric and surface applications. We are interested in aspects of solar and infrared radiation and papers on methods for identifying errors and limits of various RT methods in climate and remote sensing studies. Papers on the use of RT theory for new and advanced active and passive remote sensing techniques including interpretation of hyperspectral measurements. Papers on modeling of cloud-aerosol interaction involving RT theory are very welcome. New technical approaches to interpret and analyze measurements of reflected, emitted, and scattered radiation in cloudy and clear atmospheres are also encouraged.
3: Particle Radiative Properties
Conveners: Teruo Aoki, Paolo Di Girolamo, Hiroshi Ishimoto
The session aims to examine the current state-of-the-science and potential future directions in understanding and describing particle radiative properties excluding ice clouds, with a specific focus on theoretical, experimental and observational studies of atmospheric particle properties, both aerosols and cloud particles, and snow surface properties. Radiative properties such as extinction, scattering and absorption coefficients, single scattering albedo, asymmetry factor, and phase function of aerosol, cloud and snow particles in spectral regions from the ultraviolet to microwaves; relevant microphysical properties, like size distributions, refractive index, particle shape, mixture of components, particle hygroscopicity, effects of relative humidity and aerosol-snow interaction. Measuring methodologies, both in situ and remote, and temporal and spatial variations of these properties in the Earth’s atmosphere are also important topics in this session. With respect to “ice clouds”, please see the separated session “Ice clouds: light scattering, radiometric & polarimetric remote sensing, and radiation parameterization” (Session 12).
4: General Remote Sensing
Conveners: Allen Larar, Bill Smith, Carmine Serio, and Daren Lu
Advanced remote sensing measurement systems are being employed for observing a wide variety of geophysical variables from ground-, aircraft-, and satellite-based platforms. These enable a wide range of research and operational applications including retrievals of the state of the atmosphere-surface system, depiction of atmospheric dynamics at various scales, and atmospheric composition and air quality. The evolving capabilities to make observations with increasing spatial resolutions and coverage and with increasing spectral resolution help to improve scientific understanding of physical processes and improve quality of the remotely sensed geophysical variables. This in turn should lead to improved environmental prediction capabilities. Abstracts are solicited on the following and related general remote sensing topics:
- observations of atmospheric state and composition from ground-, aircraft-, and satellite-based remote sensing instruments;
- methods for retrieving geophysical parameters, the influence of a priori information, and corresponding error estimation;
- remote sensing data fusion (multi-sensor, multi-platform, passive and active, remote and in-situ), and the impact on information content;
- analysis of methods using the spectral, angular, temporal and polarization radiation characteristics;
- sounding of the troposphere, stratosphere, and upper non-LTE atmosphere;
- multi-dimensional soundings, such as tomography and other approaches, and their evolution in time;
- new measurement/instrument/platform concepts and prototype demonstrations;
- results from remote sensing experiment laboratory instruments: relevant measurements, instrument characterization and testing;
- calibration techniques (spectral, radiometric, and spatial);
- calibration reference systems, their realization and benefit to (global) remote sensing observations;
- new remote sensing data sampling, processing, and compression methods;
- measurement system validation (sensor, algorithms, and data products);
- results of airborne and ground-based satellite measurement calibration/validation campaigns;
- research and operational techniques for enhancing the value of remote sensing data in weather, climate, chemistry, and air quality analysis and prediction applications
5: Understanding Climate using Satellite Data
Conveners: Graeme Stephens, Claudia Stubenrauch
Satellite observations provide a continuous survey of our planet (the state and constituents of the atmosphere, surface and ocean).
The synergistic use of different instruments is leading to major advances in the understanding of our climate. Specific topics of this session are:
- Understanding the Earth’s climate from an Earth observational perspective;
- Aerosol, cloud, precipitation and radiation processes and interactions in the climate system;
- Evaluation of climate models;
- Use of satellite observations to improve the representation of key processes in climate models;
6: Surface Measurements and Field Experiments
Conveners: Bruce Forgan, Tadahiro Hayasaka
The last two decades have seen significant improvements in the quality and uncertainty of the basic surface-based measurements if solar and terrestrial (infra-red) irradiance, and the total column transmittance. Similarly there has been an increase in the use of spectral solar irradiance instruments to monitor incoming and reflected irradiance at the Earth’s surface in visible and near-infrared. This session will focus on the recent developments, improvements and field experiments that improve our understanding of the information content in surface-based measurements, and welcomes contributions on new and innovative methods of measurement of irradiance and atmospheric transmission.
7: Radiation Budget and Forcing
Conveners: Martin Wild, Peter Pilewskie, Arturo Sanchez-Lorenzo, Stefan Kinne
The radiation budget is a key parameter of the Earth’s climate system. Its components can be altered by anthropogenic and natural processes resulting in climate change. We invite papers on observations and modeling of the Earth and Surface Radiation budget as well as the variability of its components in space and time. We welcome papers which can improve our understanding and quantitative characterization of the radiative forcing by solar irradiance, atmospheric species, clouds and aerosol. Papers based on the comparison of the simulated radiation budget with observation data are encouraged. Special attention will be paid to the following key issues: the results of recent satellite experiments CERES and GERB; cloud, surface albedo and direct/indirect aerosol radiative forcing; uncertainties in the anthropogenic and natural forcing; validation of the Earth/Surface radiation budget retrieved from the data acquired by ground- based/satellite instruments as well as from climate simulations and reanalyses; and energy budget/water cycle interactions.
8: Weather, Climate and Environment Applications
Conveners: Allen Huang, Zhang Hua
Session topics, key issues, emerging, and innovative applications that are of interest to IRS but not limited to:
- The use of radiation measurements to facilitate weather, climate and environment study, applications and forecasting.
- Implementation, validation and comparison of radiative transfer parameterization within weather, climate, and environment models.
- Technique and results of assimilating radiation quantities into weather, air quality forecast and climate models.
- Impacts of radiative processes on weather, climate and climate forecasting and modeling.
- The prediction and validation of radiation quantities from weather and climate models.
- Verification of model simulations of radiation and other meteorological and climate variables.
- Scaling of sub-grid radiative processes into large scale climate models (e.g. local aerosol sources, open leads in Arctic and Antarctic waters).
- Role of radiation measurements in Air quality monitoring, modeling, and forecasting.
- Radiative processes in weather, climate, and environment, and their consequences (e.g., cloud-climate interactions, aerosol-chemistry-climate interactions, atmosphere-ocean interactions)
- Climate variations and changes due to natural and anthropogenic radiative forcings; climate feedbacks and sensitivity, global and regional changes, impacts on the hydrologic cycle, and comparisons of model simulations with observations.
- Diagnostic analyses of the weather and climate system utilizing model simulations and observations (e.g., space-borne and ground-based) on a variety of spatial and temporal scales.
- Specific radiative effects and interactions of aerosol, clouds and atmospheric gases in weather and climate modeling.
- Global and regional radiation climatologies
- Detection and characterization of climate trends/changes.
- Regional trends/changes in radiation regimes and their environmental impacts.
- Climate data record management, access, quality control, and stewardship.
- Other topics such as
- Design, development, and implementation of future weather/climate/environment sensor systems.
- National and international weather/climate/environment research program and initiative
- Other general climate studies that are related to climate variability and changes, such as those on climate analysis method, data quality, new data sets, observation systems, etc.
- Other key issues, emerging and innovative applications such as
- Improvements in weather, climate and air quality forecasts as a consequence of improved parameterization of radiative process guided by theoretical knowledge and observations.
- Variations in radiation, hydrologic and other climate variables on timescales ranging from seasonal to interannual, and to interdecadal, with implications for climate sensitivity.
- Impact of clouds, aerosol, greenhouse gases, and solar forcings on Earth’s climate change, including comparisons of simulations with observations.
- Growing needs for the long term high quality climate data records and improved climate sensor system and coordinated research and operational program.
- Emerging applications in renewable energy management, hazard monitoring, carbon cycle, pollution and other real-time weather and environment events.
- Leveraging High Performance Computing (HPC) for accelerated use of radiation measurements for various time consuming and complicated modeling, data assimilation and forecasts.
9: Solar UV Radiation
Conveners: Mario Blumthaler, Julian Groebner, and Richard McKenzie
Focus on: new systems and methods for determination of Solar UV radiation from ground and from space; development of UV instruments and networks; climatological and case study investigations of the spectral, temporal and spatial variability of solar UV radiation due to variable atmospheric conditions (e.g. aerosols, clouds, ozone); effects of solar UV on men (beneficial and harmful), biosphere and air chemistry.
10: Ocean Optics
Conveners: Knut Stamnes, Jacek Chowdhary
One goal of this session is to focus on the need to understand radiative transfer (RT) in the coupled atmosphere-ocean system from a climate modeling as well as a satellite or aircraft remote sensing point of view. Contributions addressing radiative interactions at the atmosphere-ocean interface including the effects of surface roughness, foam, and bubbles as well as radiative processes in both the atmosphere and the water are solicited. Time dependent processes induced by surface waves are also important to marine biologists trying to understand fish and cephalod behavior. Observational and modeling studies of scalar and polarized radiative transfer including elastic and inelastic scattering processes are of interest. Papers on forward and inverse RT modeling aimed at retrieval of information about both the atmosphere (aerosols) and marine parameters in the water from passive as well as active satellite or aircraft remote sensing data are solicited as well as papers on field measurements required for validation purposes.
11: Southern Ocean and Antarctica: Radiation, Clouds, Aerosols and Sea-Ice
Conveners: Roger Davies, Greg McFarquhar, and Adrian McDonald
The Southern Ocean plays a key role in the global climate system through its interaction with Antarctica, and strongly affects the climate of all Southern Hemisphere land regions. It is extremely cloudy by global standards, and appears to have very high amounts of natural marine aerosol loading, yet has minimal contributions from anthropogenic aerosols compared to regions at equivalent latitudes in the Northern Hemisphere. The relative absence of conventional observations presents a challenge to the modeling of cloud-aerosol-radiative-sea ice interactions, and lowers the quality of reanalysis data for this region. Existing remote sensing observations and the limited in-situ data suggest that mixed-phase and supercooled clouds are ubiquitous, but models poorly represent these clouds, particularly in the cold sector of cyclonic storm systems. Thus, their radiative impact is largely unknown. We seek presentations that address the remote sensing of cloud, aerosol, sea-ice and related properties of this region, including Antarctica, as well as studies of radiative interactions in a broader context that help to advance our knowledge of Southern Ocean climate.
12: Ice clouds: light scattering, radiometric & polarimetric remote sensing, and radiation parameterization
Conveners: Ping Yang, Anthony Baran
Ice clouds are ubiquitous in the atmosphere, where they play important roles in various physical and dynamical processes. In particular, these clouds strongly regulate the radiation budget of the earth-atmosphere system through their interactions with solar radiation and terrestrial thermal emission and are critical elements in association with space remote sensing of aerosols and surface properties. This session focuses on light scattering, radiometric & polarimetric remote sensing, and radiation parameterization involving ice clouds.