Our research group investigated the capabilities of space-borne thermal infrared sounding to provide the accurate measurements of CO2 distribution that are necessary to better constrain the inversion model of CO2 surface fluxes and thus improve our knowledge of natural and anthropogenic sources and sinks of carbon dioxide. The study consisted in the implementation of a new wide band and multi-target inversion code for the retrieval of carbon dioxide total column from IASI/ MetOp-A measurements and in the application of the code, named KLIMA, to the analysis of IASI data from the period March 2010 - February 2011. The KLIMA-IASI XCO2 retrieved values were subsequently compared with the operational XCO2 products of the GOSAT mission retrieved from the SWIR measurements of the TANSO-FTS instrument. The paper reports the major steps of the research activities conducted for the KLIMA-IASI study and describes the main outcome from the various phases of development of the retrieval code, processing of the IASI radiances and comparison of the retrieved XCO2 values with corresponding products from the operational analysis of IASI by EUMETSAT and from TANSO-FTS on-board the GOSAT mission. Future perspective are discussed in the conclusions for improvements of the KLIMA-IASI retrieval code and for further applications including exploitation of potential synergies between independent and complementary measurements of carbon dioxide in different spectral regions or using passive and active techniques.
Space-borne measurements of carbon dioxide distribution: inverse modelling and data fusion techniques
Ugo Cortesi;Samuele Del Bianco;Marco Gai;Lucia Laurenza;Bruno Carli
2013
Abstract
Our research group investigated the capabilities of space-borne thermal infrared sounding to provide the accurate measurements of CO2 distribution that are necessary to better constrain the inversion model of CO2 surface fluxes and thus improve our knowledge of natural and anthropogenic sources and sinks of carbon dioxide. The study consisted in the implementation of a new wide band and multi-target inversion code for the retrieval of carbon dioxide total column from IASI/ MetOp-A measurements and in the application of the code, named KLIMA, to the analysis of IASI data from the period March 2010 - February 2011. The KLIMA-IASI XCO2 retrieved values were subsequently compared with the operational XCO2 products of the GOSAT mission retrieved from the SWIR measurements of the TANSO-FTS instrument. The paper reports the major steps of the research activities conducted for the KLIMA-IASI study and describes the main outcome from the various phases of development of the retrieval code, processing of the IASI radiances and comparison of the retrieved XCO2 values with corresponding products from the operational analysis of IASI by EUMETSAT and from TANSO-FTS on-board the GOSAT mission. Future perspective are discussed in the conclusions for improvements of the KLIMA-IASI retrieval code and for further applications including exploitation of potential synergies between independent and complementary measurements of carbon dioxide in different spectral regions or using passive and active techniques.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
