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NARSTO Workshop on Innovative Methods for Emission Inventory Development and Evaluation University of Texas, Austin October 14-17, 2003 |
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Poster 16: The Application Of Density Measurement Of Greenhouse Gases Using Aircrafts And Kite Planes For GHG Inventory Verification
Hideaki Nakane, Gen Inoue, and Tomoyuki Aizawa
Center for Global Environmental Research (CGER) of National Institute for Environmental Studies of Japan (NIES)
1. Outline of the measuring methodology developed by the National Institute for Environmental Studies
The Center for Global Environmental Research (CGER) of the National Institute for Environmental Studies (NIES) has succeeded in developing measuring methods of greenhouse gases using aircrafts and kite planes.
Conducting measurements of vertical profiles of wind, and density of CO2 and water vapor using aircrafts, wide-area flux observations clarify the relationships between their spatial distributions and ground surface measurements. Distributions of CO2 density at high-altitude was measured with CO2 sensor loaded on kite planes, flying every two hours. Moreover, distribution of CO2, humidity, temperature, wind direction and velocity at high-altitude were measured using kitoons loading air sampling tube and meteorological sensors.
2. Issues and concerns for non-CO2 greenhouse gas inventories
Total emissions of non-CO2 greenhouse gases (GHG) (CH4, N2O, HFC, PFC, and SF6) of Japan in 2000 are 95 million metric tons of CO2 equivalent (approximately 7% of all greenhouse gases). It is nearly the same amount as Japan´s emission reduction target of the Kyoto Protocol, 6%, and this fraction should be much higher in the rest of the nations in the Southeast Asian region. It is considered to be difficult to compile inventories of non-CO2 emissions from each source. Insufficient coverage for non-CO2 emissions, even SF6, has been pointed out. Estimating inventory data utilizing the measurements of atmospheric density levels would be efficient to enhance completeness of GHG inventories and measures against global warming.
3. Application of the estimating methodology in developing non-CO2 GHG emission inventories
Based on the measurement of densities of CO2, CH4, N2O, HFCs, PFCs, SF6, CO, and H2 using aircrafts, analysis on the correlation between these data will be implemented. Application of such methodology to potential inventory verification measures will be examined.