Submission Deadline: 1 August 2018
Dates: 10-14 December
2018
Location: Washington, DC, USA
This year’s fall meeting of the American Geophysical Union marks the organization’s 100th year. As the largest gathering of Earth and space scientists in the world, there are many sessions relevant to GEWEX science. Some of them are listed and highlighted
below.
Section: Global Environmental Change GC086: The Global Water
Cycle: linkages of ocean salinity with the atmosphere and terrestrial hydrology Session ID: 53319
This session highlights water cycle research that describes
linkages between the ocean, atmosphere, and land hydrology. Contributions are invited on all aspects of water cycle research including analyses undertaken using in situ and remote observations from current (e.g., SMAP, SMOS, GRACE, GPM, GCOM-W, CMORPH-series), past (e.g., Aquarius, TRMM), and future (e.g., SWOT, GRACE-FO) satellite missions, estimates
based on numerical models, data assimilation systems, and climate model projections. We particularly welcome contributions that consider multiple realms (the ocean, atmosphere, land surface and subsurface), and provide compelling evidence for linkages between these, describing coherent water cycle variability and change. We welcome global and regional assessments, and contributions that underscore the imperative to augment and maintain the existing water cycle observing system to ensure that
ongoing long-term changes are accurately measured and quantified.
GC090: The Third Pole Environment (TPE) under Global Changes
The Tibetan Plateau and surrounding mountain regions,
known as the Third Pole, cover an area of > 5 million km2 and are considered to be the water tower of Asia. The Pan Third Pole expands on both the north-south and the east-west directions, going across the Tibetan Plateau, Pamir, Hindu Kush, Iran Plateau, Caucasian and Carpathian, and covering an area of about 20 million km2. Like the Arctic and Antarctica, the Pan Third Pole’s environment is extremely sensitive to global climate change. In recent years, scientists from
around the globe have increased observational, remote sensing and numerical modeling research related to the Pan Third Pole in an effort to quantify and predict past, current and future scenarios. Co-sponsored by TPE (www.tpe.ac.cn), this session is dedicated to studies of Pan Third Pole atmosphere, cryosphere, hydrosphere, and biosphere and their interactions with global change. Related contributions are welcomed.
GC040: Environmental, Socio-Economic, and Climatic Changes in Northern Eurasia
Session ID: 44261 GC060: Planning Climate Observations Session ID: 52357
GC084. Taking the temperature of the Earth: Challenges, trends, and applications across all Earth
surface domains
Session ID: 48660
Section: Atmospheric Sciences
A015: Arctic Energy Balance and Relevant Atmosphere and
Surface Processes: Current Understanding and Challenges
The Arctic is experiencing more rapid changes than anywhere else on Earth with far-reaching socioeconomic implications.
Arctic climate variations in the last decade are strong indicators of the important yet delicate coupling between atmospheric and surface processes in the region. Projected Arctic responses to rising CO2 by state-of-the-art earth system models still exhibit large spreads in key parameters like temperature, sea ice loss, and ice sheet melt. This spread partly stems from an incomplete understanding of the processes that affect energy flows in the Arctic, especially those linking the
atmosphere and cryosphere. We invite observational, modeling, and theoretical studies of the Arctic energy cycle, heat transport by atmospheric and oceanic circulations, and their relation to clouds, water vapor, cryosphere processes. This session is intended to provide a forum for reviewing our current understanding of Arctic energy balance and outline the challenges that lie ahead for advancing Arctic climate change prediction.
A070: Mesoscale and severe convective storms: understanding, and model development and evaluation Session ID: 46885
Mesoscale convective systems (MCSs) are significant rain-producing weather systems over the globe. Severe convective storms (SCSs)
produce large hail, damaging winds and/or tornadoes, and torrential rainfall, causing substantial damages. Quite often, SCSs are associated with MCSs particularly at the mid-latitudes. The physical understanding about factors impacting the initiation, intensity, and evolution for both MCSs and SCSs are still low. Model simulations of them are challenging particularly in global models. This session invites recent studies that use observations and/or model simulations at various scales to improve
our understanding and model simulations of MCSs and SCSs. The efforts in parameterization development and model evaluation from cloud-resolving models to global models with various observational data are particularly encouraged.
A102. The Surface Energy Budget: Influences on Spatiotemporal Magnitude and Variability Session ID: 51491
The surface energy budget is a key determinant in the climate system, being the primary integrating quantity of climate process and change, starting with downwelling radiation bearing the footprint of all changes in atmospheric composition including greenhouse gases, clouds, and aerosols. We invite papers on all facets of the global and regional surface energy budgets based on surface observations, satellite-derived records, reanalysis data, and global and
regional climate model simulations. Special emphasis is placed on all aspects of field measurements of atmospheric radiation, as well as on the spatial and temporal variations of the different radiative and non-radiative (i.e. latent and sensible heat fluxes) components of the surface energy balance. Studies of the effects of cloud and aerosol forcing on surface energy climatology and trends, including the solar dimming and brightening phenomenon, and their causes are of interest along with
other validated proxy means to represent the surface energy components.
Session ID: 45344
The earth system operates across a wide spectrum of scales, ranging from thousands of kilometers to a handful of meters. In recent years,
increasing computer power and convection-permitting models (< 4 km horizontal grid spacing) as well as novel techniques such as variable-resolution and multiscale modeling framework are helping to enable high-resolution simulations over large regional, even global, domains at climate time scales. The ability to model smaller scales appropriately has been shown to improve simulations of convection, severe storms, orographic forcing, and their upscale effects to the large-scale
circulation.
A059: Interactions between Land-surface, Convective Boundary Layer, Clouds and Aerosols – Linking Observations with Models Session ID: 45743
A064: Land-atmosphere interactions of the
Tibetan Plateau and their impacts on weather and climate Session ID: 47388
A074. Multi-sensor, Model, and Measurement Synergy: Aerosol Sources and Their Environmental Effects
Session ID:
46889 A081: Polar Atmospheric Processes and Their Interactions with Land, Ice, and OceanA109: Urban and regional air quality: Emissions, land surface forcing, and meteorological impacts
Section: Cryosphere
C027. Observing, Modelling, Diagnosing, and Predicting
Hydrological and Earth System Change in Cold Regions
Session ID: 52183 In recent decades warming trends and other changes in climate have driven major and rapid changes in landscapes, ecology, cryosphere, and hydrology, especially in high latitude and mountainous cold regions. Here, the presence of snow, ice, and frozen soils greatly impacts water cycling and Earth system functioning.
Understanding of process interactions and behaviour from experimental and observational programs, and improved representation of these processes within physics-based models are key towards diagnosing the complexities of past change and better predicting future responses in system functioning over various time scales. This session invites papers that describe field and modelling studies to address process interactions, the changing nature of hydrological, hydrometeorological and Earth systems in
response to climatic drivers, and the diagnosis and prediction of change. Studies dealing with biogeochemistry and the integration of water quality and water quantity monitoring and modelling across cold region landscapes and water bodies are also welcome.
C025: Modeling of the Cryosphere: Seasonal Snow
Section: Hydrology
H007: Advances in Integrated Observations, Modeling and Predictions for Weather, Climate,
and Impact Assessments Session ID: 50552 SWIRL Theme: Extreme Events & Hazards
Improved observational, modeling, and prediction systems are essential for assessing resilience and vulnerability characteristics of
hydrometeorological events, and they also contribute to resolution of water security issues. The development of new technologies and strategies to improve the collection and distribution of observations is therefore central for adaptation and mitigation of the impacts from severe weather events and climate extremes, as well as for better support of water management policies. Contributions that demonstrate
the use of observations and models in addressing extreme hydrometeorological events are invited. Developments of observational and information systems that discuss ways to increase their effectiveness are also solicited. Presentations on advances in integration of observations from various sources are of high interest. Educators and students involved in programs on Earth observing systems for weather, climate, and hydrological studies are also invited to contribute to this
session.
H014: Advances in Understanding Land-Atmosphere Interactions in a Changing Environment Session ID: 46923
Land-atmosphere interactions are a key component of the Earth System. Spatial and temporal
variations in surface characteristics (e.g., soil moisture, vegetation) and attendant land-atmosphere fluxes (e.g., evapotranspiration) can feed back on local climate, including hydrometeorological extremes such as heatwaves and drought. Observing, and hence, modeling of coupled land-atmospheric processes is a major challenge due to the complexity of the processes involved and scale heterogeneity of the land surface. This session invites studies employing novel observational or modeling
frameworks to elucidate time and space variations in the strength of coupled land-atmosphere processes and feedbacks (from bedrock to boundary layer). Studies integrating meso-scale networks (e.g., OKMESONET, ARM-SGP, and AmeriFlux), field campaign data (e.g., PECAN, LAFE, HI-SCALE), or satellite data are of particular interest. Also, studies addressing the quantifiable role of land-atmosphere processes in weather predictability and climate variability and change, for example in the context of
the CMIP6 participating models, are welcomed.
H011: Advances in quantifying impacts and extents of land-use/land-cover change on hydrology
H024: Applications of GRACE / GRACE-FO Missions in
Terrestrial HydrologySession ID: 49146
H042: Coupling water and carbon cycles in a changing environment Session ID: 50608
H064: Global Synthesis of Land-surface Fluxes under Natural and Human-altered Watersheds
using Budyko Framework Session ID: 50792
H071. Hydrologic Data Assimilation
Session ID: 54306
H088: Monitoring and modeling spatial patterns
in hydrology: Integrating distributed earth observations for the seamless calibration and evaluation of hydrological and land surface models
H104: Remote Sensing and Modeling of the Terrestrial Water
CycleSession ID: 46317
Swirl Theme: SOILS
B006: Agricultural systems: links between hydrology and
biogeochemical cycling
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