Kh.U. Abraamyan, A.B. Anisimov, M.I. Baznat, K.K. Gudima, M.A. Kozhin, V.I. Kukulin,
D. Mateos, V.E. Cachorro, C. Toledano, M.A. Burgos, Y. … · Arctic areas, being also important...
1
DATABASE AOD 440nm – PM 10 ANALYSIS CONCLUSIONS Further details ACKNOWLEDGEMENTS OBJECTIVE Analysis of the aerosol load over the Iberian Peninsula (IP), considering both particulate matter (PM) and aerosol optical depth (AOD) data from a climatological perspective. Variable Meaning Network N sector NE sector C sector SE sector SW sector PM 10 PM < 10 μm (surface) EMEP 2001-2013 (4640) 2001-2013 (4649) 2001-2013 (4685) 2001-2013 (4345) 2008-2013 (1771) AOD 440nm AOD at 440nm (columnar) AERONET 2012-2013 (384) 2004-2013 (2367) 2003-2012 (3385) 2004-2013 (2428) 2000-2013 (3613) Table 1. PM 10 and AOD 440nm time series used in this study (in brackets the total number of daily data). Position of each air mass between the −24 h and the −120 h of the considered date is used to evaluate the aerosol load contribution, weighting the number of hours overflight in each world region (Artic -A-, Polar Maritime -MP-, Tropical Maritime -MT-, Tropical Continental -CT-, Mediterranean -Me-, Continental -C-, and Local -C- origins). Air masses at 500 m are assumed to produce all the concentration in PM data, while those at 1500 m represent the AOD . Air mass backward trajectories arriving at five sectors of the IP between 2001 and 2013 are evaluated using the HYSPLIT model. PM 10 = 6.8 + 39.9 AOD 440nm r = 0.59 (0.53-0.66) N sector 0 0 . 1 0 . 2 A O D 44 0 nm J F M A M J J A S O N D 0 10 20 PM 1 0 ( µ g m - 3 ) 0 0 . 1 0 . 2 A O D 44 0 nm J F M A M J J A S O N D 0 10 20 PM 1 0 ( µ g m - 3 ) 0 0 . 1 0 . 2 A O D 44 0 nm J F M A M J J A S O N D 0 10 20 PM 1 0 ( µ g m - 3 ) 0 0 . 1 0 . 2 A O D 44 0 nm J F M A M J J A S O N D 0 10 20 PM 1 0 ( µ g m - 3 ) 0 0 . 1 0 . 2 A O D 44 0 nm J F M A M J J A S O N D 0 10 20 30 PM 1 0 ( µ g m - 3 ) NE sector PM 10 = 11.6 + 22.1 AOD 440nm r = 0.42 (0.39-0.46) C sector PM 10 = 4.3 + 60.2 AOD 440nm r = 0.60 (0.58-0.62) SE sector PM 10 = 3.6 + 88.1 AOD 440nm r = 0.67 (0.64-0.69) SW sector PM 10 = 11.6 + 36.8 AOD 440nm r = 0.37 (0.32-0.42) MP + A MT + CT M e C + L T o t a l - Arctic, polar maritime, and local origins govern the aerosol climatology. - PM10 cycle shows a decline in April due to a larger contribution of polar air masses and the reduction of desert dust events. Large summer values controlled by Atlantic-Arctic and continental-local origins. - A summer local minimum in July is observed in the AOD 440nm cycle (reduction of desert dust), which is not visible in the PM 10 cycle. - Good agreement between PM 10 and AOD 440nm . - Largest impact of the desert dust events in the IP . - Atlantic area is governing the PM 10 annual cycle. - The AOD 440nm cycle is modulated by the tropical area (e.g., March, June,, August, September). - The smaller tropical air mass occurrence in April and July also affect AOD 440nm . - The incidence of the Mediterranean air masses is only notable at the surface. - Bad PM-AOD relationship. - Atlantic, continental and Mediterranean origins dominate the aerosol climatology. - PM 10 cycle shows weak variations through the year. - AOD 440nm notably increase during summer (bell shape). - PM 10 presents a larger tropical contribution between October and March, while the AOD exhibits the maximum values in spring and summer. - Bad relationship between PM 10 and AOD 440nm values. - There is no a particular origin governing the aerosol climatology. - PM 10 minimum in April is linked to the decrease of tropical influence, which also presents a local maximum in October. Large summer values due to local and Mediterranean air masses. - Large AOD 440nm values in summer are due to tropical and local influences. - Best agreement in the correlation between PM 10 and AOD 440nm . - Aerosol climatology is influenced by North-Atlantic and Arctic areas, being also important the continental origin. - PM 10 shows a weak change through the year. Tropical area also shows impact in winter, early spring (annual maximum in March), and autumn. - Low number of AOD data. Continental origin peaks in March and July causing large AOD values. Tropical area also is relevant in October. - Good PM-AOD relationship. D. Mateos, V.E. Cachorro, C. Toledano, M.A. Burgos, Y. Bennouna, B. Torres, D. Fuertes, R. González, C. Velasco-Merino, R. Román, A. Calle and A.M. de Frutos Grupo de Óptica Atmosférica, Departamento de Física Teórica, Atómica, y Óptica, Universidad de Valladolid, Paseo Belén 7, CP 47011, Valladolid, Spain. E-mail: [email protected] @goa-uva Data (2001-2013) from available sites of the EMEP and AERONET networks are classified in five Iberian sectors. - PM 10 annual cycle presents a first maximum in March (early spring) and a second one in summer (July or August) separated by a local minimum in April. With respect to AOD, the southern sectors (SW and SE) exhibit the same annual pattern as PM 10 . In the remaining sectors the AOD presents a more defined bell shape with maxima in summer. - The polar maritime and Arctic air masses are proved as the main responsible of the aerosol climatology, but the eastern Iberian coast presents a dominant role of the Mediterranean Sea. Finally, the southwestern area is clearly governed by desert dust intrusions from North Africa. - A linear relationship between PMx and AOD is proved, although this relationship is clearly affected by the meteorological and synoptic conditions. Overall, both variables are correlated by a simplified factors ranging between 20 and 90 for the different sectors of the Iberian Peninsula. - AERONET (NASA/GSFC, PHOTONS/LOA and RIMA/GOA staff ) and EMEP networks. - Funding from: the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement Nr. 262254 [ACTRIS]; Spanish MINECO (projects of ref. CGL2011-23413, CGL2012-33576); Environmental Council of the CyL Regional Government (Consejería de Medio Ambiente, Junta de Castilla y León), AERQUA project. Mateos, D., et al. (2015). Columnar and surface aerosol load over the Iberian Peninsula establishing annual cycles, trends, and relationships in five geographical sectors. Science of the Total Environment 518–519, 378–392. VIII Workshop Lidar Measurements in Latin America (WLMLA) 6th to 10th April, 2015 Cayo Coco, Cuba
Transcript of D. Mateos, V.E. Cachorro, C. Toledano, M.A. Burgos, Y. … · Arctic areas, being also important...
DATABASE
AOD440nm – PM10 ANALYSIS
CONCLUSIONS
Further details
ACKNOWLEDGEMENTS
OBJECTIVE Analysis of the aerosol load over the Iberian Peninsula (IP), considering both particulate matter (PM) and aerosol optical depth (AOD) data from a climatological perspective.
Variable Meaning Network N sector NE sector C sector SE sector SW sector
PM10 PM < 10 μm
(surface) EMEP 2001-2013 (4640)
2001-2013 (4649)
2001-2013 (4685)
2001-2013 (4345)
2008-2013 (1771)
AOD440nm AOD at 440nm
(columnar) AERONET 2012-2013 (384)
2004-2013 (2367)
2003-2012 (3385)
2004-2013 (2428)
2000-2013 (3613)
Table 1. PM10 and AOD440nm time series used in this study (in brackets the total number of daily data).
Position of each air mass between the −24 h and the −120 h of the considered date is used to evaluate the aerosol load contribution, weighting the number of hours overflight in each world region (Artic -A-, Polar Maritime -MP-, Tropical Maritime -MT-, Tropical Continental -CT-, Mediterranean -Me-, Continental -C-, and Local -C- origins). Air masses at 500 m are assumed to produce all the concentration in PM data, while those at 1500 m represent the AOD.
Air mass backward trajectories arriving at five sectors of the IP between 2001 and 2013 are evaluated using the HYSPLIT model.
PM10 = 6.8 + 39.9 AOD440nm r = 0.59 (0.53-0.66)
N sector
0
0.1
0.2
AO
D44
0nm
J F M A M J J A S O N D
0
10
20
PM10
(µg m
- 3 )
0
0.1
0.2
AO
D44
0nm
J F M A M J J A S O N D
0
10
20
PM10
(µg m
- 3 )
0
0.1
0.2
AO
D44
0nm
J F M A M J J A S O N D
0
10
20
PM10
(µg m
- 3 )
0
0.1
0.2
AO
D44
0nm
J F M A M J J A S O N D
0
10
20
PM10
(µg m
- 3 )
0
0.1
0.2
AO
D44
0nm
J F M A M J J A S O N D
0
10
20
30
PM10
(µg m
- 3 )
NE sector
PM10 = 11.6 + 22.1 AOD440nm r = 0.42 (0.39-0.46)
C sector
PM10 = 4.3 + 60.2 AOD440nm r = 0.60 (0.58-0.62)
SE sector
PM10 = 3.6 + 88.1 AOD440nm r = 0.67 (0.64-0.69)
SW sector
PM10 = 11.6 + 36.8 AOD440nm r = 0.37 (0.32-0.42)
MP +
A MT +
CT Me C +
L Total
- Arctic, polar maritime, and local origins govern the aerosol climatology. - PM10 cycle shows a decline in April due to a larger contribution of polar air masses and the reduction of desert dust events. Large summer values controlled by Atlantic-Arctic and continental-local origins. - A summer local minimum in July is observed in the AOD440nm cycle (reduction of desert dust), which is not visible in the PM10 cycle. - Good agreement between PM10 and AOD440nm.
- Largest impact of the desert dust events in the IP. - Atlantic area is governing the PM10 annual cycle. - The AOD440nm cycle is modulated by the tropical area (e.g., March, June,, August, September). - The smaller tropical air mass occurrence in April and July also affect AOD440nm. - The incidence of the Mediterranean air masses is only notable at the surface. - Bad PM-AOD relationship.
- Atlantic, continental and Mediterranean origins dominate the aerosol climatology. - PM10 cycle shows weak variations through the year. - AOD440nm notably increase during summer (bell shape). - PM10 presents a larger tropical contribution between October and March, while the AOD exhibits the maximum values in spring and summer. - Bad relationship between PM10 and AOD440nm values.
- There is no a particular origin governing the aerosol climatology. - PM10 minimum in April is linked to the decrease of tropical influence, which also presents a local maximum in October. Large summer values due to local and Mediterranean air masses. - Large AOD440nm values in summer are due to tropical and local influences. - Best agreement in the correlation between PM10 and AOD440nm.
- Aerosol climatology is influenced by North-Atlantic and Arctic areas, being also important the continental origin. - PM10 shows a weak change through the year. Tropical area also shows impact in winter, early spring (annual maximum in March), and autumn. - Low number of AOD data. Continental origin peaks in March and July causing large AOD values. Tropical area also is relevant in October. - Good PM-AOD relationship.
D. Mateos, V.E. Cachorro, C. Toledano, M.A. Burgos, Y. Bennouna, B. Torres, D. Fuertes, R. González, C. Velasco-Merino, R. Román, A. Calle and A.M. de Frutos
Grupo de Óptica Atmosférica, Departamento de Física Teórica, Atómica, y Óptica, Universidad de Valladolid, Paseo Belén 7, CP 47011, Valladolid, Spain. E-mail: [email protected] @goa-uva
Data (2001-2013) from available sites of the EMEP and AERONET networks are classified in five Iberian sectors. - PM10 annual cycle presents a first maximum in March (early spring) and a second one in summer (July or August) separated by a local minimum in April. With respect to AOD, the southern sectors (SW and SE) exhibit the same annual pattern as PM10. In the remaining sectors the AOD presents a more defined bell shape with maxima in summer. - The polar maritime and Arctic air masses are proved as the main responsible of the aerosol climatology, but the eastern Iberian coast presents a dominant role of the Mediterranean Sea. Finally, the southwestern area is clearly governed by desert dust intrusions from North Africa. - A linear relationship between PMx and AOD is proved, although this relationship is clearly affected by the meteorological and synoptic conditions. Overall, both variables are correlated by a simplified factors ranging between 20 and 90 for the different sectors of the Iberian Peninsula.
- AERONET (NASA/GSFC, PHOTONS/LOA and RIMA/GOA staff ) and EMEP networks.
- Funding from: the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement Nr. 262254 [ACTRIS]; Spanish MINECO (projects of ref. CGL2011-23413, CGL2012-33576); Environmental Council of the CyL Regional Government (Consejería de Medio Ambiente, Junta de Castilla y León), AERQUA project.
Mateos, D., et al. (2015). Columnar and surface aerosol load over the Iberian Peninsula establishing annual cycles, trends, and relationships in five geographical sectors. Science of the Total Environment 518–519, 378–392.
VIII Workshop Lidar Measurements in Latin America (WLMLA)
6th to 10th April, 2015 Cayo Coco, Cuba
