Tropical forests help manage the world's carbon. Many factors affect how much carbon a forest can store or release. We looked at these factors in a forest in northeast India to learn about its net carbon exchange. The forest takes in more carbon before the rainy season and less in the winter. The forest also releases more carbon than other Indian forests. From 2016 to 2018, the forest made about 2600 gC/m2/yr of carbon through photosynthesis.