TY - JOUR A1 - Zhuravlev, R. A1 - Khattatov, B. A1 - Kiryushov, B. A1 - Maksyutov, S. T1 - Technical Note: A novel approach to estimation of time-variable surface sources and sinks of carbon dioxide using empirical orthogonal functions and the Kalman filter JO - Atmos. Chem. Phys. J1 - ACP VL - 11 IS - 20 SP - 10305 EP - 10315 Y1 - 2011/10/17 PB - Copernicus Publications SN - 1680-7324 UR - http://www.atmos-chem-phys.net/11/10305/2011/ L1 - http://www.atmos-chem-phys.net/11/10305/2011/acp-11-10305-2011.pdf DO - 10.5194/acp-11-10305-2011 ER -