Oversea transport validation

Any body know about transport validation? I was requested from my supervisor to conduct transport validation for our company. As we need validation of transportation with different climatic condition during product transit, what parameters monitoring required?. Which condition (distance or climax temperature in the country?) we should take as worst condition, how we have to prove the transport modes through various methods [ by air / sea/ road /by active or passive mode]. If it going with among these three conditions, how we validate? Our product is mainly shipping to Asia, Middle East, Africa and Europe country. How to we monitor, pls guide me. We have to initiate transport validation for our product shipping process.

Thanks and regards