The type of figurative language used in the excerpt is Personification. When the author gives the sun a <em>human characteristic (pitiless sun)</em>, he uses the figurative language Personification to enrich the text.
Personification is a <em>figurative language technique where objects, ideas or animals are given human characteristics or qualities.</em> <em>The sun, for example, can't be pitiless, as well as it can't pity.</em> Only people can pity someone else or something because pity is a feeling or an attitude. Thus, the technique of Personification is used by the author.
That enriches the text because <em>the sun is given movement, action.</em> It seems like its incidence over those who face the drought, in the excerpt, <em>is stronger and intentioned</em> because of its Personification. The author is able to<em> express the character's feelings and impressions</em> without saying it literally. The figurative language creates <em>an image</em> and is able to express more than if the author had used descriptive language. The text adopts a <em>poetic tone</em>, which can cause the reader to <em>perceive feelings and sensations</em>. Hence, the text is enriched by the use of the figurative language Personification.