Atmospheric and Hydrospheric Sciences (A)
Session Sub-categoryComplex & General(CG)
Session IDA-CG32
TitleGlobal Carbon Cycle Observation and Analysis
Short TitleGlobal Carbon Cycle Analysis
Main Convener NameKazuhito Ichii
AffiliationChiba University
Co-Convener 1NamePrabir Patra
AffiliationResearch Institute for Global Change, JAMSTEC
Co-Convener 2NameForrest M. Hoffman
AffiliationOak Ridge National Laboratory
Co-Convener 3NameMakoto Saito
AffiliationNational Institute of Environmental Studies
Session LanguageE
ScopeThe landmark Paris Agreement under the United Nations Framework Convention on Climate Change (UNFCCC) aims at reduction of greenhouse gases (GHGs) emission to keep the global warming below 2 degC. As per the agreement the nationally determined commitments (NDCs) and their progresses should be carefully monitored and verified by international bodies. The emission verification will be based on observation of the time evolution of greenhouse gases and model-based estimations of emissions from time to time.

In recent years, the number of observations and new techniques to monitor GHGs budget have been increasing. The improvements includes observational platforms for monitoring atmospheric GHGs, national or regional emission inventories, top-down models (e.g. atmospheric inverse models), and bottom-up models (e.g. process-based models). However, due to uncertainties in modeling and sparse observation network, high uncertainty exists in GHGs sources/sinks estimations at global and regional scales. These uncertainties lead to large variations in future projection of GHG budgets and climate changes.

The purpose of the session is to discuss state-of-the-art techniques for estimations of GHGs (e.g. CO2, CH4, N2O) budget at global and regional scales. The topic includes natural and anthropogenic processes, various methodologies (e.g. in-situ observation, aircraft monitoring, remote sensing, modeling), and various targets (e.g. atmosphere, terrestrial, and ocean), various spatial and temporal coverage (e.g. regional to global scales and past-present-future). Improved estimates of emissions from land use change, forest fires, and other anthropogenic sources (urban developments and thermal power station etc.) are also of interest. 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
Invited AuthorsTomohiro Oda
TimePresentation NoTitlePresenterAbstract
Oral Presentation May 28 PM1
13:45 - 14:00ACG32-01A high-resolution fossil fuel CO2 emission gridded dataset for tracer transport simulations and flux inversions: An overview, evaluations, applications and future perspectivesTomohiro Oda
14:00 - 14:15ACG32-02Towards Decreasing the Uncertainty in Global Carbon Dioxide Emission InventoryRichao Cong
14:15 - 14:30ACG32-03Evaluation of MIROC4-ACTM reanalysis of GHGs concentrations using aircraftJagat Bisht
14:30 - 14:45ACG32-04Carbon flux estimation using NICAM-TM 4D-Var and GOSAT data towards GOSAT-2 Level 4 productTazu Saeki
14:45 - 15:00ACG32-05Attribution of the ambiguity in methane’s growth rate shifts during 1988-2016.Naveen Chandra
15:00 - 15:15ACG32-06Ocean uptake and land use change emissions suppressed atmospheric CO2 growth in the 2015/16 El NiñoMasayuki Kondo
Oral Presentation May 28 PM2
15:30 - 15:45ACG32-07Observing vegetation seasonal dynamics in Japan with Himawari-8 hypertemporal dataTomoaki Miura
15:45 - 16:00ACG32-08Carbon and Water Fluxes at High spatial Resolutions through Down-ScalingJiquan Chen
16:00 - 16:15ACG32-09Connecting Satellite Based Spectral Modelling Approach and Forest Inventory to Model Biomass and Carbon Stocks in Natural and Planted Forest over part of Semi-arid zone, IndiaSWATI UNIYAL
16:15 - 16:30ACG32-10Allocation of forest net primary production varies by forest age and air temperatureXiang Song
16:30 - 16:45ACG32-11Analyzing Model Biases in Terrestrial Carbon Cycle Submodels in Earth System Models and Offline ModelsKazuhito Ichii
16:45 - 17:00ACG32-12Assessing terrestrial biogeochemical feedbacks in a strategically geoengineered climateForrest M. Hoffman
Presentation NoTitlePresenterAbstract
Poster Presentation May 28 AM2
ACG32-P01Regional budgets of 3 major greenhouse gases using inverse modelling of atmospheric dataPrabir Patra
ACG32-P02Analysis of hot summer in 2018Kazutaka Murakami
ACG32-P03Updated Data-Driven GPP and NEE Estimation Using Machine Learning Algorithms with Remote Sensing and Flux DataZhiyan Liu
ACG32-P04Response of a Bornean Rainforest to the Climatic Changes imposed by ENSO during 2009-2016Julie Karine Michelon
ACG32-P05Monitoring and Evaluating CO2 Flux in the Grassland Areas of MongoliaQinxue Wang
ACG32-P06Data-driven monitoring of terrestrial carbon cycle in MongoliaZAYA MART