GLOBAL CARBON ATLASVanessa Maigné(1), Patrick Brockmann(1), Pep Canadell(2), Corinne Le Quéré(3), Philippe Peylin(1), Robert Andres(4), Anna Peregon(1), Pascal Evano(1), Philippe Ciais(1)

and all data contributors

(1) LSCE : Climate and Environment Sciences Laboratory, Paris, France (Vanessa.Maigne@lsce.ipsl.fr) (2) Global Carbon Project, CSIRO Marine & Atmospheric Research, Australia

(3) Tyndall Centre for Climate Change Research, Uni. of East Anglia, UK (4) Carbon Dioxide Information Analysis Center (CDIAC), Oak Ridge National Laboratory, US

PERSPECTIVES- Time series : add new tool for CO2 fluxes by using the dc.js and crossfilter technologies - Maps :

- add uncertainty mapping (stippling overlay following the "IPCC" guidelines)- add exports (high quality formats)- add new projections (Robinson)

REFERENCES- J.D. Blower et al. : A Web Map Service implementation for the visualization of multidimensional gridded environmental data, Environmental Modelling & Software, 2013- M. Bostock, V. Ogievetsky, J. Heer : D3: Data-Driven Documents, IEEE Trans. Visualization & Comp. Graphics (Proc. InfoVis), 2011- UNIDATA, 2006. THREDDS Data Server (TDS)

MAPS DISPLAY EXAMPLEhttp://www.globalcarbonatlas.org/?q=flux_maps

TIME SERIES DISPLAY ARCHITECTURE- Extract data from a THREDDSdData Server (TDS) with the Netcdf Subset Service (NCSS)- Display interactive graphs with a custom library based on the Data Driven Documents javascript library (D3.js)

TIME SERIES EXAMPLEhttp://www.globalcarbonatlas.org/?q=flux_ts

DATA CONTRIBUTORS AND STATISTICS

- Datasets provided by 30 laboratories worldwide(Europeans, Americans, Chinese, Japanese, Australians)

- More than 30 global net surface carbon flux simulations, including atmospheric CO2 inversions (TRANSCOM effort) and land and ocean biogeochemical model simulations (GCP-TRENDY experiment)

- More than 30000 visitors in 160 countries since the opening

Time to create a map < 1s

1) Choose your projection 2) Choose product and averaging period 3) Choose variable and time period 4) Draw map

Maps options : - Dynamical changes (range, legend, palette, ...) - Projections (coordinate system parameter) - Zoom option - Synchroneaously connection to each other - Overlays to apply (land and ocean mask,

frontiers, ...)- Export to Google Earth (with time animation available)

Time series options : - Dynamical changes (color, points, deletion, ...) - Zoom option - Customizable bounds - Interpolations - File export formats :

- svg- png- pdf

Responsive application.Emphasis on web standards and capabilities of modern browsers.

1) Choose your regions and period 2) Choose resources and variable 3) Draw time serie

Time to create a time serie ~ 10ms

2010, Heat wave in Russia seen by vegetation modelsAveraging periods for vegetation models in North America and

Global Land

- Explore and get access to data sources from a THREDDS Data Server (TDS) with the OGC WMS protocol (using the ncWMS implementation)

- Get extra information layers from a GeoServer (rivers, frontiers, names, ...)

INTRODUCTION : The Global Carbon Atlas is a web portal, opened November 2013, to explore, visualize, and interpret global and regional carbon fluxes from various model simulations arising from both human activities and natural processes. The graphics and data sources are made available in the belief that their wide dissemination will lead to new knowledge and better-informed decisions to limit and cope with human-induced climate change. The Global Carbon Atlas is a community effort under the umbrella of the Global Carbon Project based on the contributions of many research institutions and individual scientists around the world who make available observations, models, and interpretation skills.

GOAL of the Carbon Atlas : Serve 3 different user groups : general public, climate policy, and research

GOAL of this poster : present the applications for the research community - Access and view large volumes of scientific data - Provide accessible, interactive, and flexible tools

- Offer the possibility to create user-defined custom graphs : - Global and regionals maps - Time series

MAPS DISPLAY ARCHITECTURE

File size : from 500ko to 200MoMap precision : 1 deg by 1 deg

File size : from 500ko to 200Mo(5000 to 170000 lines)

Enhancement of the iso related to geospatial metadata and quality (iso 19115 and 19157)Done by GeoViQua project for GEOSS

https://github.com/GlobalCarbonAtlas- maps : bobcat- time series : woodpecker

NetCDFFiles

TOMCAT SERVERTHREDDS SERVER

OpenLayers

.js

HTTP Server

OPENLAYERS

Load + Filter Resource

Apply Style Rules

Render Image

NetCDFSubset

GEOSERVER

Geo Tiles

WCS

OPENDAP

Data Tiles

Map Request

- Create inter-active maps with the OpenLayers javascript library

ncWMS

Research applications of the Atlas : Data visualization in interactive maps and time series

http://www.globalcarbonatlas.org

Outreach : http://www.globalcarbonatlas.org/?q=outreach

Emissions application : http://www.globalcarbonatlas.org/?q=emissions

WEB

THREDDS SERVER

Load + Filter Resource

Return subsetted Dataset

NetCDFSubsetD3.js

NetCDFFiles

WoodpeckerObject(reusable javascript object)

date,lat[unit="degrees_north"],lon[unit="degrees_east"],Terrestrial_flux[unit="PgC/year"]

1980-01-16T00:00:00Z,0.0,0.0,6.8754281997680661980-02-16T00:00:00Z,0.0,0.0,6.35603809356689451980-03-16T00:00:00Z,0.0,0.0,11.2587127685546881980-04-16T00:00:00Z,0.0,0.0,5.8992381095886231980-05-16T00:00:00Z,0.0,0.0,-11.6571722030639651980-06-16T00:00:00Z,0.0,0.0,-18.2492179870605471980-07-16T00:00:00Z,0.0,0.0,-22.2059326171875(...)

csv format

OPENDAP HTTP Server

WMS WCS

Time Serie Request

TOMCAT SERVER