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sector:other_and_natural_sources:natural_sources [2023/03/03 10:12] – [Table] hausmannsector:other_and_natural_sources:natural_sources [2024/11/06 14:50] (current) – external edit 127.0.0.1
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-====== NFR 11 - Other Sources ====== +===== 11.C - Other Natural Sources ===== 
-===== 11.C Other Natural Sources =====+
 ====Short description ==== ====Short description ====
  
-^  NFR-Code  ^  Name of category                                        ^  Method ^  AD  ^  EF  ^  Key Category  ^ +^  NFR-Code  ^  Name of category  ^  Method ^  AD  ^  EF  ^  Key Category  ^ 
-|  11.C       | **Lightning**  |  T1     |  NS  |  D   |                |+|  11.C      |  **Lightning**     |  T1     |  NS  |  D   |                |
  
  
-Lightning and corona discharge during thunderstorm events cause atmospheric chemical reactions to take place at high voltages and high temperatures. These reactions cause the production of NOx in the atmosphere.+Lightning and corona discharge during thunderstorm events cause atmospheric chemical reactions to take place at high voltages and high temperatures. These reactions cause the production of NO<sub>x</sub> in the atmosphere.
  
 ====Methodology==== ====Methodology====
  
-The calculation of NOx emissions from lightning uses strike counts from the German weather service and default emission factors from the EMEP/EEA guidebook.+The calculation of NO<sub>x</sub> emissions from lightning uses strike counts from the German weather service and default emission factors from the EMEP/EEA guidebook.
  
 For the complete time series, the emissions are calculated as follows:  For the complete time series, the emissions are calculated as follows: 
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 ====Emission Trend==== ====Emission Trend====
-The emission value is solely dependent on the strike count and varies between 1 to 2 kilotons of NOx per year. +The emission value is solely dependent on the strike count and varies between 1 to 3 kilotons of NOx per year. 
  
 Figure 1: NFR 11.C, NOx emissions from lightning Figure 1: NFR 11.C, NOx emissions from lightning
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 ==== Uncertainties ==== ==== Uncertainties ====
-The AD from BLIDS does have a low uncertainty of ± 3%. The uncertainties for the emission factors are estimated to be relatively high, being a default value. Hence the overall uncertainty for the emission estimation of NOx from lightning is qualified estimated by expert judgement to be high (>50%).+The AD from BLIDS does have a low uncertainty of ± 3%. The uncertainties for the emission factors are estimated to be relatively high, being a default value. Hence the overall uncertainty for the emission estimation of NO<sub>x</sub> from lightning is qualified estimated by expert judgement to be high (>50%).
  
 ====Quality checks==== ====Quality checks====