co2emiss               package:UsingR               R Documentation

_C_a_r_b_o_n _D_i_o_x_i_d_e _E_m_i_s_s_i_o_n_s _f_r_o_m _t_h_e _U._S._A. _f_r_o_m _f_o_s_s_i_l _f_u_e_l

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

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

     data(co2emiss)

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

     The format is: Time-Series [1:276] from 1981 to 2004: -30.5 -30.4
     -30.3 -29.8 -29.6 ...

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

     Monthly estimates of 13C/12C in fossil-fuel CO2 emissions. For
     write up see <URL:
     http://cdiac.esd.ornl.gov/trends/emis_mon/emis_mon_co2.html>. In
     particular find:

     "An annual cycle, peaking during the winter months and reflecting
     natural gas consumption, and a semi-annual cycle of lesser
     amplitude, peaking in summer and winter and reflecting coal
     consumption, comprise the dominant features of the annual pattern.
     The relatively constant emissions until 1987, followed by an
     increase from 1987-1989, a decrease in 1990-1991 and record highs
     during the late 1990s, are also evident in the annual data of
     Marland et al. However, emissions have declined somewhat since
     2000."

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

     <URL:
     http://cdiac.esd.ornl.gov/ftp/trends/emis_mon/emis_mon_c13.dat>

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

     data(co2emiss)
     monthplot(co2emiss)
     stl(co2emiss, s.window="periodic")

