1 README.DOC  on Continental Riverloads 
   2    
   3 The data sets available on this ftp-site covers the discharge and the loads
   4 for nutrients, Total Alkalinity, Dissolved Inorganic Carbon and 
   5 Dissolved Organic Carbon for the continental rivers entering the North Sea
   6 for years 1977 to 2006.    
   7 
   8 The data are provided in the following form for each river:
   9     date       discharge  total N   nitrate   ammonium  DIN       total P   phosphate silicate   TALK      DIC       DOC                                         
  10    YY MM DD    [m3 s-1]   [t N/d]   [t N/d]   [t N/d]   [t N/d]   [t P/d]   [t P/d]   [t Si/d]   [Mmol/d]  [Mmol/d]  [Mmol/d]
  11 
  12 
  13     Mmol stands for Mega mol = 10**6 mol.   
  14 
  15     Data with no values are marked with -999.990
  16 
  17     In some rare situations negative values of discharge occure
  18     (see chapter on river inputs from the Dutch coast in new report); 
  19     these are set to zero for the load calculation.
  20 
  21 
  22     The datasets are available as daily values in
  23                      ASCII   (ifm-river2006-ascii.zip)
  24                  and EXCEL   (ifm-river2006-excel.zip) 
  25 
  26   For the Dutch rivers the following relation is given between the measuring sites and the rivers.
  27        Lake IJssel         -->             Vrouwenzand 
  28        Nordzeekanal        -->             Ijmuiden (kilometer 2)
  29        Nieuwe Waterweg     -->             Maassluise 
  30        Haringvliet         -->             Haringvlietsluis
  31        Scheldt             -->             Schaar van Ouden Doel
  32 
  33    The description of the nutrient data started with the report 
  34    by H. Lenhart and J. Paetsch, 2001 (ZMK Report Nr. 40). 
  35     
  36    In a second step the information on Total Alkalinity, Dissolved Inorganic Carbon and 
  37    Dissolved Organic Carbon were added.  
  38    Information on the load calculation as well as the original data are given in a the report,
  39    
  40    J. Paetsch and H. Lenhart, 2004
  41    Daily Loads of Nutrients, Total Alkalinity, Dissolved Inorganic Carbon 
  42    and Dissolved Organic Carbon of the European Continental Rivers 
  43    for the Years 1977 - 2002
  44    Berichte aus dem Zentrum für Meeres- und Klimaforschung, ZMK Nr. 48: 159pp   
  45    (RIVER-ZMK-48.pdf).
  46 
  47    A Technical report is added for an overview including the extension of the data 
  48    up to 2006 (RIVER2006.pdf).
  49 
  50    Since this is not yet an official ZMK-report please use for citation
  51    the present official ZMK report.
  52  
  53    J. Paetsch and H. Lenhart, 2004
  54    Daily Loads of Nutrients, Total Alkalinity, Dissolved Inorganic Carbon 
  55    and Dissolved Organic Carbon of the European Continental Rivers 
  56    for the Years 1977 - 2002
  57    Berichte aus dem Zentrum für Meeres- und Klimaforschung, ZMK Nr. 48: 159pp