KAZALCI OKOLJA

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Key message
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In recent years, air pollution with ozone has been above the target value at all measurement sites representative for vegetation. Furthermore, the long-term target value has been exceeded to an even higher degree.


This indicator shows the value of the AOT40 parameter, which reflects the effects of ozone on vegetation between May and July when open air ozone concentrations are at their highest.

The AOT40 value (expressed in [μg/m3] x hours) is defined as the sum of the differences between 1-hour concentrations above 80 μg/m3 (= 40 parts per billion [ppb]) and 80 μg/m3 within a given time period, using only hourly values measured each day between 8:00 a.m. and 8:00 p.m. CET.


Charts

Figure ZR18-1: Vegetation parameter AOT40, 2003-2015
Sources: 

Automatic Air Quality Measurement Database (ANAS), Slovenian environment agency, 2016.

Show data
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Urban background (micro g/m3).h 24691 15297 17712 29674 19987 14284 13324 22929 18474 20151
Hrastnik (micro g/m3).h 24691 15297 17712 29674 19987 14284 13324 22929 18474 20151
Rural background (micro g/m3).h 38771 24408 24601 36488 31370 22121 21688 24678 24258 28311
Otlica (R (B)) (micro g/m3).h 56015 41652 28305 32824 33445 30602 37332
Krvavec (R (B)) (micro g/m3).h 44859 30761 35998 47080 37543 32192 29530 38915 24895 34309
Maribor - Pohorje (micro g/m3).h 36131 19304 21395 27422 28461 17376 12216 15228 20013 23492
Iskrba (micro g/m3).h 35324 23158 25997 35637 27050 19353 22949 21949 20897 25387
Sv. Mohor (micro g/m3).h 15013 16287 22146 13379 10920 13851 24881 21034
Rural/Industrial type (micro g/m3).h 30339 15598 21146 26912 26524 16476 18828 26321 22380 24748
Kovk (micro g/m3).h 34122 17438 22360 20085 25749 18607 17432 27862 22504 22084
Vnajnarje (micro g/m3).h 28861 17246 16719 32092 29138 20548 23239 22192 25806
Zavodnje (micro g/m3).h 28035 12109 24359 28558 24684 14345 18505 27862 22445 26353
Rural/Agricultural type (micro g/m3).h 37602 14390 19700 23339 24037 16553 15980 18728 23869 24978
Murska Sobota - Rakičan (micro g/m3).h 37602 14390 19700 23339 24037 16553 15980 18728 23869 24978
target value (micro g/m3).h 20000 20000 20000 20000 20000 20000 20000 20000 20000 20000
2013 2014 2015
Urban background (micro g/m3).h 14959 15107 20022
Hrastnik (micro g/m3).h 14959 15107 20022
Rural background (micro g/m3).h 26802 21347 27108
Otlica (R (B)) (micro g/m3).h 30050 22288 29112
Krvavec (R (B)) (micro g/m3).h 35714 29523 36028
Maribor - Pohorje (micro g/m3).h 19207 18577 23418
Iskrba (micro g/m3).h 17616 15985 21043
Sv. Mohor (micro g/m3).h 31423 20363 25939
Rural/Industrial type (micro g/m3).h 22290 25081 27098
Kovk (micro g/m3).h np 31897 31467
Vnajnarje (micro g/m3).h np 22703 23867
Zavodnje (micro g/m3).h 22290 20644 25961
Rural/Agricultural type (micro g/m3).h 18904 15699 18448
Murska Sobota - Rakičan (micro g/m3).h 18904 15699 18448
target value (micro g/m3).h 20000 20000 20000
Figure ZR18-2: Vegetation parameter AOT40 on locations Krvavec and Otlica, 2003-2015
Sources: 

Automatic Air Quality Measurement Database (ANAS), Slovenian environment agency, 2016.

Show data
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Urban background (micro g/m3).h 24691 15297 17712 29674 19987 14284 13324 22929 18474 20151
Hrastnik (micro g/m3).h 24691 15297 17712 29674 19987 14284 13324 22929 18474 20151
Rural background (micro g/m3).h 38771 24408 24601 36488 31370 22121 21688 24678 24258 28311
Otlica (R (B)) (micro g/m3).h 56015 41652 28305 32824 33445 30602 37332
Krvavec (R (B)) (micro g/m3).h 44859 30761 35998 47080 37543 32192 29530 38915 24895 34309
Maribor - Pohorje (micro g/m3).h 36131 19304 21395 27422 28461 17376 12216 15228 20013 23492
Iskrba (micro g/m3).h 35324 23158 25997 35637 27050 19353 22949 21949 20897 25387
Sv. Mohor (micro g/m3).h 15013 16287 22146 13379 10920 13851 24881 21034
Rural/Industrial type (micro g/m3).h 30339 15598 21146 26912 26524 16476 18828 26321 22380 24748
Kovk (micro g/m3).h 34122 17438 22360 20085 25749 18607 17432 27862 22504 22084
Vnajnarje (micro g/m3).h 28861 17246 16719 32092 29138 20548 23239 22192 25806
Zavodnje (micro g/m3).h 28035 12109 24359 28558 24684 14345 18505 27862 22445 26353
Rural/Agricultural type (micro g/m3).h 37602 14390 19700 23339 24037 16553 15980 18728 23869 24978
Murska Sobota - Rakičan (micro g/m3).h 37602 14390 19700 23339 24037 16553 15980 18728 23869 24978
target value (micro g/m3).h 20000 20000 20000 20000 20000 20000 20000 20000 20000 20000
2013 2014 2015
Urban background (micro g/m3).h 14959 15107 20022
Hrastnik (micro g/m3).h 14959 15107 20022
Rural background (micro g/m3).h 26802 21347 27108
Otlica (R (B)) (micro g/m3).h 30050 22288 29112
Krvavec (R (B)) (micro g/m3).h 35714 29523 36028
Maribor - Pohorje (micro g/m3).h 19207 18577 23418
Iskrba (micro g/m3).h 17616 15985 21043
Sv. Mohor (micro g/m3).h 31423 20363 25939
Rural/Industrial type (micro g/m3).h 22290 25081 27098
Kovk (micro g/m3).h np 31897 31467
Vnajnarje (micro g/m3).h np 22703 23867
Zavodnje (micro g/m3).h 22290 20644 25961
Rural/Agricultural type (micro g/m3).h 18904 15699 18448
Murska Sobota - Rakičan (micro g/m3).h 18904 15699 18448
target value (micro g/m3).h 20000 20000 20000
Figure ZR18-3: Vegetation parameter AO405, 2007-2015 (five-year average for each year)
Sources: 

Automatic Air Quality Measurement Database (ANAS), Environmental Agency of the Republic of Slovenia, 2016.

Show data
2007 2008 2009 2010 2011 2012 2013 2014 2015
Urban background (micro g/m3).h 21472 19391 18996 20040 17800 17832 17967 18324 17743
Hrastnik (micro g/m3).h 21472 19391 18996 20040 17800 17832 17967 18324 17743
Rural background (micro g/m3).h 31741 28582 24897 27269 24823 24211 25147 25079 25565
Otlica (micro g/m3).h 38448 33366 32502 32850 30743 29877
Krvavec (micro g/m3).h 39248 36715 36469 37052 32615 31968 32672 32671 32094
Maribor - Pohorje (micro g/m3).h 26543 22792 21374 20141 18659 17665 18031 19303 20941
Iskrba (micro g/m3).h 29433 26239 26197 25388 22440 22107 21759 20367 20186
Sv. Mohor (micro g/m3).h 15549 15317 17035 16813 20421 22310 24728
Rural/Industrial type (micro g/m3).h 24104 20233 20879 21914 21007 20652 22969 24497 24723
Kovk (micro g/m3).h 23951 20848 20847 21947 22431 21698 22470 26087 26988
Vnajnarje (micro g/m3).h 24811 19039 19699 21003 19023 18357 22946 23485 23642
Zavodnje (micro g/m3).h 23549 20811 22090 22791 21568 21902 23491 23919 23539
Rural/Agricultural type (micro g/m3).h 23814 19604 19922 19727 19833 20022 20491 20436 20380
Murska Sobota - Rakičan (micro g/m3).h 23814 19604 19922 19727 19833 20022 20491 20436 20380
target value (micro g/m3).h 20000 20000 20000 20000 20000 20000 20000 20000 20000
Figure ZR18-4: Vegetation parameter AOT40 on locations Krvavec and Otlica, 2007- 2015 (five-year average for each year)
Sources: 

Automatic Air Quality Measurement Database (ANAS), Environmental Agency of the Republic of Slovenia, 2016.

Show data
2007 2008 2009 2010 2011 2012 2013 2014 2015
Urban background (micro g/m3).h 21472 19391 18996 20040 17800 17832 17967 18324 17743
Hrastnik (micro g/m3).h 21472 19391 18996 20040 17800 17832 17967 18324 17743
Rural background (micro g/m3).h 31741 28582 24897 27269 24823 24211 25147 25079 25565
Otlica (micro g/m3).h 38448 33366 32502 32850 30743 29877
Krvavec (micro g/m3).h 39248 36715 36469 37052 32615 31968 32672 32671 32094
Maribor - Pohorje (micro g/m3).h 26543 22792 21374 20141 18659 17665 18031 19303 20941
Iskrba (micro g/m3).h 29433 26239 26197 25388 22440 22107 21759 20367 20186
Sv. Mohor (micro g/m3).h 15549 15317 17035 16813 20421 22310 24728
Rural/Industrial type (micro g/m3).h 24104 20233 20879 21914 21007 20652 22969 24497 24723
Kovk (micro g/m3).h 23951 20848 20847 21947 22431 21698 22470 26087 26988
Vnajnarje (micro g/m3).h 24811 19039 19699 21003 19023 18357 22946 23485 23642
Zavodnje (micro g/m3).h 23549 20811 22090 22791 21568 21902 23491 23919 23539
Rural/Agricultural type (micro g/m3).h 23814 19604 19922 19727 19833 20022 20491 20436 20380
Murska Sobota - Rakičan (micro g/m3).h 23814 19604 19922 19727 19833 20022 20491 20436 20380
target value (micro g/m3).h 20000 20000 20000 20000 20000 20000 20000 20000 20000

Goals

To meet the target value for plant protection for the period May–July, the AOT40 (calculated from 1-hour values) should have a five-year average of 18,000 μg/m3 x h (3).


In the period 2007–2014, the target value of the AOT40 parameter for plant protection (a five-year average for four preceding years plus the current year) was exceeded at all representative measuring sites except at Sv. Mohor nad Brestanico between 2009 and 2012.

The highest mean values were measured at the Otlica and Krvavec measuring sites. The Krvavec measuring site is located at a high-altitude. At this site, daily fluctuations of ozone concentration are relatively low, resulting in a higher sum of morning and afternoon concentrations. The Otlica measuring site is located slightly less than 1000 m above the sea level. High concentrations occur due to the transport of ozone from the valley and from Italy. Ozone concentrations and, consequently, the values of the AOT40 parameter, are highly dependant on the weather; the highest values occur during the years with long periods of dry, hot weather and abundant solar radiation.



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