<prompt> Translate the following text to EnglishWataalamu wa hali ya hewa na watafiti wamekabiliana na uhitaji wa makadirio ya kisayansi ya hali ya hewa kwa kuunda mifano ya hali ya hewa ya hali ya hewa.  <response>: Air quality modelers and researchers have responded to the need for scientifically valid and reliable estimates of air quality changes by developing a number of sophisticated atmospheric dispersion and transformation models. 