Jenkins: Research on the properties of snow at the North Pole should be conducted in January and February.
Jenkins' first claim
Research at North Pole should be conducted in January and February. does Lurano disagree?
Yes. She's implicitly saying that research at North Pole should be in April or May.
Jenkins's second claim
The weather is cold enough in January/February that snow will definitely not melt.
does Lurano disagree?
No. She seems to agree it's super cold then, and still pretty cold a couple months later.
Jenkins's third claim
It's important that research money not be wasted. does Lurano disagree?
No, she probably agrees that research money shouldn't be wasted.
Jenkins's fourth claim
If we wait until later than February, we risk sending researchers when they will be unable to carry out research successfully. does Lurano disagree?
No, not quite. She isn't ready to say that if we send people in April/May there is no risk. In fact, she even acknowledges the risk by saying, "it will likely still be quite cold then".
Evaluate
It looks like, of the explicit claims, the only one Lurano is specifically arguing the opposite of is the first one. Jenkins would say and Lurano is saying, "we should do the research in April/May, so that we have less risk of the researchers being harmed by the cold.