Previous research into postmortem interval (PMI) estimation has been restricted to temperate and arid climates. Results suggest that decomposition rates may be significantly slower in cold weather regions. ... In some cases, postmortem animal activity accelerated decomposition rates.

Does cold slow down decomposition?

While cooler temperatures during winter are known to slow the rate of soft tissue decomposition due to suppression of biological activity (e.g. enzymes, bacteria, and insects), the impact of cooler temperatures on the decomposition odor is mostly based on anecdotal evidence by scent-detection canine handlers.

How does cold affect decomposition?

At colder temperatures decomposing organisms will be less active, thus the rate of decomposition remains low. ... As the temperature increases, decomposers become more active and the rate increases. At extremely high temperatures decomposers will be killed and decomposition will stop.