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Stadtklimatologie, Messung der Inversionshoehe ueber Koeln mittels Sodar

Es ist das Ziel des Vorhabens, ein physikalisch realistisches Rechenmodell zu schaffen, dass den Auf- und Abbau der naechtlichen und winterlichen Inversionen ueber dem Stadtgebiet vorherzusagen ermoeglicht. Die Kontrolle und Erfassung der Phaenomenologie erfolgen durch vertikal sondierenden Schallradar und staendige Messung der Strahlung, Feuchte, Temperatur und des Windes. Der Aufbau eines Messnetzes innerhalb des Stadtgebietes wird vorbereitet. Bereits vorhandene Windmessungen werden ausgewertet und mit gleichzeitigen Schadstoffmessungen korreliert.

Native plants and mycorrhizal fungi in wind erosion control in the Kailash-Manasarovar region (Tibet, China)

We study the effects of plants and root-associated fungi on wind erosion within the alpine environment of Tibet. China is one of the countries most affected by desertification processes and Tibet, in particular, a key region in desertification combat. The presented project focuses on the Barkha Plain surrounded by Mount Kailash and the Lake of Manasarovar (Ngari Prefecture). This Western Tibet region experienced little scientific attention but, nowadays, faces rapidly increasing touristic activities and expanding local settlements associated with socio-economic changes that are serious threats to the delicate ecological balance and potential triggers of desertification. It exists almost unanimous agreement that revegetation is the most efficient and promising strategy to combat wind erosion and desertification in the long term. However, re-colonising success is often poor, mainly under extreme environmental conditions. Compared to conventional practices, the approach of the presented project attains better accordance with natural succession processes and promises acceleration of both plant and soil development and, conclusively, more efficient desertification control. The project assesses the potential of native plants and symbiotic fungi to control wind erosion and desertification processes. It aims to identify key plants and fungi that increase soil aggregate stability and efficiently drive succession into a natural and self-maintaining cycle of the ecosystem. Furthermore, it provides crucial information for implementing environmentally compatible and cost-effective measures to protect high-elevation ecosystems against desertification. Within three successional stages (early, intermediate, late), field investigations are performed on the basis of Modified-Whittaker plots. Classic methods of vegetation analysis and myco-sociology are combined with analysis of distribution patterns at different scales (patchiness, connectivity). Comprehensive soil analysis is performed comprising grain size distribution, aggregate stability, pH as well as water and nutrient contents. Additionally, important parameters of wind erosion are measured concurrently and continuously to assess their magnitude and variability with respect to vegetation and soil at different levels of development. The parameters addressed, include sediment transport, air temperature, radiation, precipitation, relative humidity as well as speed and direction of wind. Surface moisture is recorded periodically and roughness described. Species and environmental parameters are checked for spatial correlation. Cutting edge technologies are applied in laboratory work, comprising molecular methods for fungal species identification and micro-tomography to analyse soil structure. Furthermore, successfully cultivated fungi and plants are subject of synthesis experiments and industrial propagation in view of practical implementation in restoration measures.

GTS Bulletin: IUXD36 EDZW - Observational data (Binary coded) - BUFR (details are described in the abstract)

The IUXD36 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUX): Other upper air reports A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 10548;Meiningen;) (Remarks from Volume-C: High resolution 2 sec., BUFR309057, Level 300) IUXD36 BUFR bulletin available 10548 Meiningen from EDZW (Deutscher Wetterdienst) up to 300 hPa. at 00 UTC, 12 UTC, ON DEMAND 06 UTC, 18 UTC

GTS Bulletin: IUKD34 EDZW - Observational data (Binary coded) - BUFR (details are described in the abstract)

The IUKD34 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUK): Radio soundings from fixed land stations (up to 100 hPa) A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 10304;Meppen;) (Remarks from Volume-C: High resolution 2 sec., BUFR309057) IUKD34 BUFR bulletin available 10304 Meppen from EDZW (Deutscher Wetterdienst) up to 100 hPa. at 05,09, 11 UTC Mon-Fri

GTS Bulletin: IUXD45 EDZW - Observational data (Binary coded) - BUFR (details are described in the abstract)

The IUXD45 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUX): Other upper air reports A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 10954;Altenstadt;) (Remarks from Volume-C: High resolution 2 sec., BUFR309057, Level 300) IUXD45 BUFR bulletin available 10954 Altenstadt from EDZW (Deutscher Wetterdienst) up to 300 hPa. at 05, 11, 17 UTC Mon-Fri

GTS Bulletin: ISND20 UMRR - Observational data (Binary coded) - BUFR (details are described in the abstract)

The ISND20 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IS): Surface/sea level T1T2A1 (ISN): Synoptic observations from fixed land stations at non-standard time (i.e. 0100, 0200, 0400, 0500, ... UTC) A2 (D): 90°E - 0° northern hemisphere (Remarks from Volume-C: NilReason)

GTS Bulletin: IUXD56 EDZW - Observational data (Binary coded) - BUFR (details are described in the abstract)

The IUXD56 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUX): Other upper air reports A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 10548;Meiningen;) (Remarks from Volume-C: High resolution 2 sec., BUFR309057, Level 500) IUXD56 BUFR bulletin available 10548 Meiningen from EDZW (Deutscher Wetterdienst) up to 500 hPa. at 00 UTC, 12 UTC, ON DEMAND 06 UTC, 18 UTC

GTS Bulletin: IUSD28 EDZW - Observational data (Binary coded) - BUFR (details are described in the abstract)

The IUSD28 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUS): Radio soundings from fixed land stations (entire sounding) A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 10868;Oberschleißheim;) (Remarks from Volume-C: High resolution 2 sec., BUFR309057) IUSD28 BUFR bulletin available 10868 Oberschleißheim from EDZW (Deutscher Wetterdienst) at 00 UTC, 12 UTC, ON DEMAND 06 UTC, 18 UTC

GTS Bulletin: IUXD39 EDZW - Observational data (Binary coded) - BUFR (details are described in the abstract)

The IUXD39 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUX): Other upper air reports A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 10962;Hohenpeißenberg;) (Remarks from Volume-C: High resolution 2 sec., BUFR309057, Level 300) IUXD39 BUFR bulletin available 10962 Hohenpeißenberg from EDZW (Deutscher Wetterdienst) up to 300 hPa. at 05.30 UTC Mon, Wed, Fri

GTS Bulletin: IUKD01 EDZW - Observational data (Binary coded) - BUFR (details are described in the abstract)

The IUKD01 TTAAii Data Designators decode as: T1 (I): Observational data (Binary coded) - BUFR T1T2 (IU): Upper air T1T2A1 (IUK): Radio soundings from fixed land stations (up to 100 hPa) A2 (D): 90°E - 0° northern hemisphere(The bulletin collects reports from stations: 10035;Schleswig;) (Remarks from Volume-C: high resolution 2 sec.)

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