The Spring-Time Boundary Layer in the Central Arctic Observed during PAMARCMiP 2009
The Arctic atmospheric boundary layer (AABL) in the central Arctic was characterized by dropsonde, lidar, ice thickness and airborne <em>in situ</em> measurements during the international Polar Airborne Measurements and Arctic Regional Climate Model Simulation Project (PA...
| Main Authors: | , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2012-07-01
|
| Series: | Atmosphere |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2073-4433/3/3/320 |
| _version_ | 1818272030272782336 |
|---|---|
| author | Alexander Makshtas Vladimir Sokolov Peter Liu Christian Haas Johannes Kässbohrer Ralf Brauner Robert Stone Thomas Orgis Klaus Dethloff Roland Neuber Gerit Birnbaum Andreas Herber Maria Stock Christoph Ritter Anne Hoffmann Marion Maturilli Astrid Lampert |
| author_facet | Alexander Makshtas Vladimir Sokolov Peter Liu Christian Haas Johannes Kässbohrer Ralf Brauner Robert Stone Thomas Orgis Klaus Dethloff Roland Neuber Gerit Birnbaum Andreas Herber Maria Stock Christoph Ritter Anne Hoffmann Marion Maturilli Astrid Lampert |
| author_sort | Alexander Makshtas |
| collection | DOAJ |
| description | The Arctic atmospheric boundary layer (AABL) in the central Arctic was characterized by dropsonde, lidar, ice thickness and airborne <em>in situ</em> measurements during the international Polar Airborne Measurements and Arctic Regional Climate Model Simulation Project (PAMARCMiP) in April 2009. We discuss AABL observations in the lowermost 500 m above (A) open water, (B) sea ice with many open/refrozen leads (C) sea ice with few leads, and (D) closed sea ice with a front modifying the AABL. Above water, the AABL had near-neutral stratification and contained a high water vapor concentration. Above sea ice, a low AABL top, low near-surface temperatures, strong surface-based temperature inversions and an increase of moisture with altitude were observed. AABL properties and particle concentrations were modified by a frontal system, allowing vertical mixing with the free atmosphere. Above areas with many leads, the potential temperature decreased with height in the lowest 50 m and was nearly constant above, up to an altitude of 100–200 m, indicating vertical mixing. The increase of the backscatter coefficient towards the surface was high. Above sea ice with few refrozen leads, the stably stratified boundary layer extended up to 200–300 m altitude. It was characterized by low specific humidity and a smaller increase of the backscatter coefficient towards the surface. |
| first_indexed | 2024-12-12T21:35:35Z |
| format | Article |
| id | doaj.art-3b13173603e54ab6b9c79796af0bc034 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-12-12T21:35:35Z |
| publishDate | 2012-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-3b13173603e54ab6b9c79796af0bc0342022-12-22T00:11:11ZengMDPI AGAtmosphere2073-44332012-07-013332035110.3390/atmos3030320The Spring-Time Boundary Layer in the Central Arctic Observed during PAMARCMiP 2009Alexander MakshtasVladimir SokolovPeter LiuChristian HaasJohannes KässbohrerRalf BraunerRobert StoneThomas OrgisKlaus DethloffRoland NeuberGerit BirnbaumAndreas HerberMaria StockChristoph RitterAnne HoffmannMarion MaturilliAstrid LampertThe Arctic atmospheric boundary layer (AABL) in the central Arctic was characterized by dropsonde, lidar, ice thickness and airborne <em>in situ</em> measurements during the international Polar Airborne Measurements and Arctic Regional Climate Model Simulation Project (PAMARCMiP) in April 2009. We discuss AABL observations in the lowermost 500 m above (A) open water, (B) sea ice with many open/refrozen leads (C) sea ice with few leads, and (D) closed sea ice with a front modifying the AABL. Above water, the AABL had near-neutral stratification and contained a high water vapor concentration. Above sea ice, a low AABL top, low near-surface temperatures, strong surface-based temperature inversions and an increase of moisture with altitude were observed. AABL properties and particle concentrations were modified by a frontal system, allowing vertical mixing with the free atmosphere. Above areas with many leads, the potential temperature decreased with height in the lowest 50 m and was nearly constant above, up to an altitude of 100–200 m, indicating vertical mixing. The increase of the backscatter coefficient towards the surface was high. Above sea ice with few refrozen leads, the stably stratified boundary layer extended up to 200–300 m altitude. It was characterized by low specific humidity and a smaller increase of the backscatter coefficient towards the surface.http://www.mdpi.com/2073-4433/3/3/320Arctic boundary layerdropsondeairborne lidarsea ice thickness |
| spellingShingle | Alexander Makshtas Vladimir Sokolov Peter Liu Christian Haas Johannes Kässbohrer Ralf Brauner Robert Stone Thomas Orgis Klaus Dethloff Roland Neuber Gerit Birnbaum Andreas Herber Maria Stock Christoph Ritter Anne Hoffmann Marion Maturilli Astrid Lampert The Spring-Time Boundary Layer in the Central Arctic Observed during PAMARCMiP 2009 Atmosphere Arctic boundary layer dropsonde airborne lidar sea ice thickness |
| title | The Spring-Time Boundary Layer in the Central Arctic Observed during PAMARCMiP 2009 |
| title_full | The Spring-Time Boundary Layer in the Central Arctic Observed during PAMARCMiP 2009 |
| title_fullStr | The Spring-Time Boundary Layer in the Central Arctic Observed during PAMARCMiP 2009 |
| title_full_unstemmed | The Spring-Time Boundary Layer in the Central Arctic Observed during PAMARCMiP 2009 |
| title_short | The Spring-Time Boundary Layer in the Central Arctic Observed during PAMARCMiP 2009 |
| title_sort | spring time boundary layer in the central arctic observed during pamarcmip 2009 |
| topic | Arctic boundary layer dropsonde airborne lidar sea ice thickness |
| url | http://www.mdpi.com/2073-4433/3/3/320 |
| work_keys_str_mv | AT alexandermakshtas thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT vladimirsokolov thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT peterliu thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT christianhaas thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT johanneskassbohrer thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT ralfbrauner thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT robertstone thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT thomasorgis thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT klausdethloff thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT rolandneuber thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT geritbirnbaum thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT andreasherber thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT mariastock thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT christophritter thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT annehoffmann thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT marionmaturilli thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT astridlampert thespringtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT alexandermakshtas springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT vladimirsokolov springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT peterliu springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT christianhaas springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT johanneskassbohrer springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT ralfbrauner springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT robertstone springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT thomasorgis springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT klausdethloff springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT rolandneuber springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT geritbirnbaum springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT andreasherber springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT mariastock springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT christophritter springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT annehoffmann springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT marionmaturilli springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 AT astridlampert springtimeboundarylayerinthecentralarcticobservedduringpamarcmip2009 |