The study, published in *Science* in 1993, used the eddy correlation method to measure the net ecosystem exchange of carbon dioxide (CO₂) in a deciduous forest in central Massachusetts from April 1990 to December 1991. The annual net uptake of CO₂ was found to be 3.7 ± 0.7 metric tons of carbon per hectare per year, with ecosystem respiration at 7.4 metric tons of carbon per hectare per year, implying gross ecosystem production of 11.1 metric tons of carbon per hectare per year. The carbon uptake rates were notably higher than those assumed in global carbon studies for temperate forests. The study highlights the importance of carbon storage in temperate forests in determining future atmospheric CO₂ concentrations. The research also discusses the impact of forest age, historical land use, and soil characteristics on net carbon storage. The findings suggest that carefully managed temperate forests could represent a significant global sink for CO₂.The study, published in *Science* in 1993, used the eddy correlation method to measure the net ecosystem exchange of carbon dioxide (CO₂) in a deciduous forest in central Massachusetts from April 1990 to December 1991. The annual net uptake of CO₂ was found to be 3.7 ± 0.7 metric tons of carbon per hectare per year, with ecosystem respiration at 7.4 metric tons of carbon per hectare per year, implying gross ecosystem production of 11.1 metric tons of carbon per hectare per year. The carbon uptake rates were notably higher than those assumed in global carbon studies for temperate forests. The study highlights the importance of carbon storage in temperate forests in determining future atmospheric CO₂ concentrations. The research also discusses the impact of forest age, historical land use, and soil characteristics on net carbon storage. The findings suggest that carefully managed temperate forests could represent a significant global sink for CO₂.