Atmospheric and Hydrospheric Sciences(A)
Session Sub-categoryComplex & General
Session IDA-CG35
TitleGlobal Carbon Cycle Observation and Analysis
Short TitleGlobal Carbon Observation and Analysis
Main ConvenerNameKazuhito Ichii
AffiliationChiba University
Co-Convener 1NamePrabir Patra
AffiliationResearch Institute for Global Change, JAMSTEC
Co-Convener 2NameToshinobu Machida
AffiliationNational Institute for Environmental Studies
Co-Convener 3NameDavid Crisp
AffiliationJet Propulsion Laboratory
Session LanguageEE
ScopeThe Paris Agreement under the United Nations Framework Convention on Climate Change (UNFCCC) is a landmark agreement in the 21st Conference of the Parties (COP21) in December 2016, which aims at reduction of greenhouse gases (GHGs) emission for keeping the global warming below 2 degC. The national commitments and progresses should be carefully monitored and verified by international bodies. In recent years, the number of observational platforms for monitoring atmospheric GHGs and air pollution species is increasing. National or regional emission inventories have also been prepared at greater resolution in space and time using different methodologies. However, due to uncertainties in modeling and sparse observation network, high uncertainty persists in global and regional sources/sinks estimations, particularly for CO2. Developing integrated observation and analysis systems for GHGs are the most urgent tasks. Atmospheric transport models, inverse models, and process-based bottom-up models should be tested and improved. The "top-down" (with inverse models) and "bottom-up" (with surface flux/emission network data and ground-based models) estimations have to be reconciled for gaining confidence in verifying the national commitments. The purpose of the session is to discuss state-of-the-art techniques for estimations of surface budget of GHGs and air pollutants. Ideally, these results would allow us to detect changes at an early stage under the changing climate and human activity, and to disseminate scientific knowledge for mitigation policies in a timely manner. Improved estimates of emissions from land use change, forest fires, and other anthropogenic sources (urban developments and thermal power station etc.) should be addressed. We also welcome discussions for designs and plans for future studies targeting city and country scale emission estimations using sophisticated modeling tools.
Presentation FormatOral and Poster presentation
Joint Session withAGU, AOGS
Time Presentation No Title Presenter Abstract
Oral Presentation May 22 AM2
10:45 - 11:00 ACG35-01Urban Carbon Dioxide Emission Inventory Developed by Bottom-up ApproachRichao Cong Abstract
11:00 - 11:15 ACG35-02The role of plant regrowth in recent enhancement of terrestrial carbon uptakeMasayuki Kondo Abstract
11:15 - 11:30 ACG35-03Evaluating Terrestrial Components by Earth System Models and Offline Terrestrial Models Using Observation-based ProductsKazuhito Ichii Abstract
11:30 - 11:45 ACG35-04MIROC4.0 based atmospheric chemistry-transport model (MIROC4-ACTM): Improved dynamical features for greenhouse gases modellingPrabir Patra Abstract
11:45 - 12:00 ACG35-05Bottom up approach to evaluate regional methane emission from the Mekong DeltaArai Hironori Abstract
12:00 - 12:15 ACG35-06Large decrease in CH4 emissions due to the Mount Pinatubo triggered atmospheric CH4 stabilization in the 1990sNaveen Chandra Abstract
Presentation No Title Presenter Abstract
Poster Presentation May 22 Core Time
ACG35-P01 Spectral Vegetation Index Data Continuity from MODIS to VIIRS: Product Inter-Comparison Tomoaki Miura Abstract
ACG35-P02 Evaluation of a Wall-to-Wall Canopy Height Satellite Product in Boreal Forests Wei Yang Abstract
ACG35-P03 Carbon balance shifts controlled by land use change and ENSO in Southeast Asia Masayuki Kondo Abstract
ACG35-P04 Global carbon cycle estimates in GOSAT/GOSAT-2 projects Makoto Saito Abstract
ACG35-P05 Northern boreal methane emission estimates from CTDAS-CH4 data assimilation system Aki Tsuruta Abstract
ACG35-P06 Temporal variations of the global CH4 sources estimated by mole fraction, carbon and hydrogen isotope ratios of atmospheric CH4, and an atmospheric chemistry transport model Ryo Fujita Abstract