Regional effects of global warming vary in nature. Some are the result of a generalised global change, such as rising temperature, resulting in local effects, such as melting ice. In other cases, a change may be related to a change in a particular ocean current or weather system.
In general, white wines exhibit more acidity than red wines. Acidity gives wine its crispness on the palate. A dry wine needs good levels of acid to provide liveliness and balance; sweet wine needs acidity so it does not seem cloying. Too much acidity will make the wine seem harsh or bitter; too little and the wine will seem flabby and dull.
If an MLF is not desired in a particular wine for other reasons such a flavor, then stability can also be achieved by treating the wine with a sulfite of some type.TO LOWER THE ACIDITY OF A WINE:A grape juice may be too high in acid due to geographical climate, or maybe it was just a bad, short season in that area.