Now you can use the full scale of the spectrophotometer. If you use a water blank as a reference, you might find that the solution alone absorbs so much light relative to distilled water that the usable scale is compressed, and the accuracy is very poor.
The SaffirâSimpson Hurricane Scale is a classification used for some Western Hemisphere tropical cyclones that exceed the intensities of tropical depressions and tropical storms. The scale divides hurricanes into five categories distinguished by the intensities of their sustained winds. In order to be classified as a hurricane, a tropical cyclone must have maximum sustained winds of at least 74 mph (33 m/s); 74 mph (64 kn; 119 km/h). The highest classification in the scale, Category 5, is reserved for storms with winds exceeding 155 mph (69 m/s); 155 mph (135 kn; 249 km/h). Source: Wikipedia.
The ACE index is used to calculate the intensity of the hurricane season and is a function of the wind speed and duration of each tropical cyclone. The 2013 Atlantic hurricane season had an approximate ACE of 33 (x10 4 knots 2) which was well below the 1981-2010 average value of 104 (x10 4 knots 2).he ACE index for the season was 66 (x10 4 knots 2), which is below the 1981-2010 average of 132 (x10 4 knots 2). The below-average number of major hurricanes in the basin kept the ACE low for 2013.