Denversp              package:extRemes              R Documentation

_D_e_n_v_e_r _J_u_l_y _h_o_u_r_l_y _p_r_e_c_i_p_i_t_a_t_i_o_n _a_m_o_u_n_t.

_D_e_s_c_r_i_p_t_i_o_n:

     Hourly precipitation (mm) for Denver, Colorado in the month of
     July from 1949 to 1990.

_U_s_a_g_e:

     data(Denversp)

_F_o_r_m_a_t:

     A data frame with 31247 observations on the following 4 variables.

     _Y_e_a_r a numeric vector giving the number of years from 1900.

     _D_a_y a numeric vector giving the day of the month.

     _H_o_u_r a numeric vector giving the hour of the day (1 to 24).

     _P_r_e_c a numeric vector giving the precipitation amount (mm).

_D_e_t_a_i_l_s:

     These observations are part of an hourly precipitation dataset for
     the United States that has been critically assessed by Collander
     et al. (1993).  The Denver hourly precipitation dataset is
     examined further by Katz and Parlange (1995).  Summer
     precipitation in this region near the eastern edge of the Rocky
     Mountains is predominantly of local convective origin (Katz and
     Parlange (1005)).

_S_o_u_r_c_e:

     Katz, Richard W. and Parlange, Marc B., Generalizations of
     chain-dependent processes: Application to hourly precipitation,
     Water Resources Research Vol. 31 No. 5: 1331-1341, May 1995.

_R_e_f_e_r_e_n_c_e_s:

     Collander, R.S., Tollerud, E.I., Li, L., and Viront-Lazar, A.,
     Hourly precipitation data and station histories: A research
     assessment, in Preprints, Eighth Symposium on Meteorological
     Observations and Instrumentation, pp. 153-158, American
     Meteorological Society, Boston, 1993.

_E_x_a_m_p_l_e_s:

     data(Denversp)
     plot( Denversp[,1], Denversp[,4], xlab="", ylab="Hourly precipitation (mm)", xaxt="n")
     axis(1,at=c(50,60,70,80,90),labels=c("1950","1960","1970","1980","1990"))

