ace_date: Problems 145 4.5 The American Natio measures the in energy (ACE) index
ID: 3765833 • Letter: A
Question
ace_date:
Problems 145 4.5 The American Natio measures the in energy (ACE) index. T tropical storm with winds exceeding sustained winds (measured in knots can National Oceanic and Atmospheric Administration (NOAA) e intensity of a hurricane season with the accumulated cyclone index. The ACE for a season is the sum of the ACE for each m with winds exceeding 35 knots (65 km/h). The maximum ) in the storm are measured or approxi- xhours. The values are squared and summed over the dura- ated every six hours. The tion easier to use. of the storm e storm. The total is divided by 10,000, to make the parameter ACE =-umax Th is parameter is related to the energy of the storm, since kinetic energy is proportional to velocity squared. However, it does not take into account the size proportional to velodc of t e storm, which would be necessary for a true total energy estimate. Reliable Atlantic Basin Hurricane Seasons, 1950-2012 Year ACE Index #Tropical #Hurricanes #Major Storms Cat. 1-5 Hurricanes Cat. 3-5 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 91 17 71 continuedExplanation / Answer
filename = 'myfile.txt';
delimiterIn = ' ';
headerlinesIn = 1;
ace_data =importdata(filename,delimiterIn,headerlinesIn);
for k = [1,2,3,4, 5]
disp(A.colheaders{1, k})
disp(A.data(:, k))
disp(' ')
end
[max_ace,idx]=max(ace_data(:,1:2))
out=[M(idx',1) max_ace']
[max_Tropical,idx]=max(ace_data(:,1:3))
out=[M(idx',1) max_Tropical']
[max_hurricane,idx]=max(ace_data(:,1:4))
out=[M(idx',1) max_hurricane']
[max_mhurricane,idx]=max(ace_data(:,1:5))
out=[M(idx',1) max_mhurricane']
M=median(ace_data);
display M
mean(ace_data,2);
mean(ace_data,3);
mean(ace_data,4);
mean(ace_data,5);
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