%
%   function [TDA] = dry_adiabat(TS); 
%
% Computes the temperature TDA(p) (in K) following
% a dry adiabat profile, for a given 1st
% layer temperature TS (in K) 
%


   function [TDA] = dry_adiabat(TS); 

% Constants
  RGASdry = 287.04;
  RGASvapor = 461.5;
  PREF = 1000; %in mb
  CPdry = 1005;
  GRAVI = 9.81;

% Pressure grid
  P = [987.5:-25:0]; %in mb
  DP = 25; %in mb
  NL = 40;

% Pressure integral
  TDA = NaN * ones(1,NL);
  TDA(1) = TS;
  for l = 1:NL-1;
    %RGAS = RGASvapor * Q(l) + (1-Q(l))*RGASdry ;%if fancy!!
    RGAS = RGASdry;
    t = TDA(l) - 273.15;
    GAMMAs = GRAVI / CPdry;
    DT = - RGAS * TDA(l) * GAMMAs * DP / (GRAVI * P(l)); 
    TDA(l+1) = TDA(l) + DT;
  end