The University of Tokyo’s carbon cycle assessment model, VISIT, and NEC’s data assimilation technology calculate decarbonization effect in forests with greater efficiency and accuracy than conventional methodsTOKYO, Mar 12, 2026 - (JCN Newswire via SeaPRwire.com) - The University of Tokyo’s Graduate School of Agricultural and Life Sciences, Faculty of Agriculture, and NEC have calculated carbon accumulation rates for Lambir Hills National Park in Malaysia based on observed removals data for greenhouse gases (GHG) utilizing the university’s VISIT (Vegetation Integrated SImulator for Trace gases) terrestrial ecosystem model.NEC’s data assimilation technology (patent pending) was used to correct data errors, and observed data was compared with simulated data in order to calculate carbon accumulation rates with a high degree of accuracy, achieving a daily margin of error of 9.4%.BackgroundNEC is promoting initiatives to quantify GHG removals in forests across Southeast Asia and to develop carbon credits in the forest sector. As part of these efforts, NEC has been conducting joint research with the Graduate School of Agricultural and Life Sciences at The Un...