Information:  - Alvan Fisher ( August 9 , 1792 -- February 13 , 1863 ) was one of the United States 's pioneers in landscape painting and genre works .  - Landscape painting, also known as landscape art, is the depiction in art of landscapes  natural scenery such as mountains, valleys, trees, rivers, and forests, especially where the main subject is a wide view  with its elements arranged into a coherent composition. In other works, landscape backgrounds for figures can still form an important part of the work. Sky is almost always included in the view, and weather is often an element of the composition. Detailed landscapes as a distinct subject are not found in all artistic traditions, and develop when there is already a sophisticated tradition of representing other subjects.   - Weather is the state of the atmosphere, to the degree that it is hot or cold, wet or dry, calm or stormy, clear or cloudy. Most weather phenomena occur in the troposphere, just below the stratosphere. Weather refers to day-to-day temperature and precipitation activity, whereas climate is the term for the statistics of atmospheric conditions over longer periods of time. When used without qualification, "weather" is generally understood to mean the weather of Earth.    What entity does 'alvan fisher' has the relation 'field of work' with?
Answer:
landscape art