Of course, meteorology is a well-established field and has greatly improved over time in explaining, understanding, and predicting weather.
Maybe the difference between meteorology and climate science is sort of like the difference between micro-economics and macro-economics. Those who specialize in one area would know the general things about the other area, but might not be well versed in doing complex, difficult science in that area, as they are in their own.
So we can think of:
- the micro-level of weather (local, short-term events);
- the meso-level of regional, longer term events, like el ninos and arctic oscillations, etc.; and
- the macro-level of climate (very long term pattern over larger regions and the whole world).
Meteorologists would be experts of the micro-level, and the good meteorologists would have a good knowledge of the meso-level and how that impacts the micro-level. However, they would not have to have hardly any understanding of climate at the macro-level, because climate does not change on time scales of their interest. We have a 1970 atlas with a climate map that is still pretty good in telling about the various climates of the world, but it cannot tell us whether it will rain tomorrow or even be a more rainy than usual this year. However, the USDA has come out with different plant zones, with the old ones shifting a bit north, due to a very slowly increasing warming. Not fast enough to be of concern for meteorologists, but just beginning to be of consideration for some farmers here and there.
The point is meteorologists do not have to know about climate, esp climate change, since it changes so very slowly, and we’d consider them derelict in their duties if they focused a lot on climate, taking time away from studying weather. And that is why our NWS meteorologist guest speaker made it clear climate change was his hobby he pursued in his spare time.
Another thing is that the principles and forces that explain climate change are different from the ones that explain weather fluctuation – they are actually fewer and simpler: Solar irradiance reaching earth, albedo (level of whiteness/lightness around the earth), earth wobble & irregular orbit, solar irradiance short-term cycles (15 years or so), the sun’s ever so increasing irradiance as it heads toward self-destruction in some 5 billion years, greenhouse gases that trap heat – both as feedbacks to changing climate and some as forcings contributing to long term climate change.
On the other hand climate change is complex in that it involves impact on many earth systems, and is impacted by earth systems. For instance, how many plants are on earth in a given decade/century to uptake the CO2, or how many termites there are to break down tough woody stuff and release methane – so, yes, entymology is pertinent to climate, but not to weather. (I hope people are not going to go around blaming termites for climate changethey already get a bad wrap

.) Also, if climate change is reducing bees, that’s important for us, since we need them to pollinate plants.
So while the factors that cause climate to change (get warmer or cooler) are few and simple, the causes of these and repercussions of the changes are very complex, and involve many fields – glaciology, … , and, yes, entymology.