FG Klimatologie

21 Items

Recent Submissions
Atmosphere Driven Mass-Balance Sensitivity of Halji Glacier, Himalayas

Arndt, Anselm ; Scherer, Dieter ; Schneider, Christoph (2021-03-26)

The COupled Snowpack and Ice surface energy and mass balance model in PYthon (COSIPY) was employed to investigate the relationship between the variability and sensitivity of the mass balance record of the Halji glacier, in the Himalayas, north-western Nepal, over a 40 year period since October 1981 to atmospheric drivers. COSIPY was forced with the atmospheric reanalysis dataset ERA5-Land that ...

Seasonality and spatial variability of dynamic precipitation controls on the Tibetan Plateau

Curio, Julia ; Scherer, Dieter (2016-09-20)

The Tibetan Plateau (TP) is the origin of many large Asian rivers, which provide water resources for large regions in south and east Asia. Therefore, the water cycle on the TP and adjacent high mountain ranges, in particular the precipitation distribution and variability play an important role for the water availability for billions of people in the downstream regions of the TP. The High Asia ...

A 12-year high-resolution climatology of atmospheric water transport over the Tibetan Plateau

Curio, Julia ; Maussion, Fabien ; Scherer, Dieter Ernst (2015-03-13)

The Tibetan Plateau (TP) plays a key role in the water cycle of high Asia and its downstream regions. The respective influence of the Indian and East Asian summer monsoon on TP precipitation and regional water resources, together with the detection of moisture transport pathways and source regions are the subject of recent research. In this study, we present a 12-year high-resolution climatolog...

Dreidimensionale Observierung atmosphärischer Prozesse in Städten – 3DO

Scherer, Dieter ; Fehrenbach, Ute ; Grassmann, Tom ; Holtmann, Achim ; Kerschbaumer, Andreas ; Krug, Alexander ; Meier, Fred ; Petersen, Erik ; Philipp, Andreas ; Scherber, Katharina ; Welsch, Jörn ; Schneider, Christoph ; Venkatraman Jagatha, Janani ; Fritz, Sabine ; Sodoudi, Sahar ; Langer, Ines ; Werner, Joe ; Ulbrich, Uwe ; Weber, Stephan ; Gerling, Lars ; Meyer-Kornblum, Agnes ; Schneidemesser, Erika von ; Villena, Guillermo ; Klemp, Dieter ; Dubus, René ; Javed, Umar ; Wegener, Robert ; Adler, Bianca ; Emeis, Stefan ; Holst, Christopher ; Kalthoff, Norbert ; Kiseleva, Olga ; Kohler, Martin ; Wieser, Andreas ; Zeeman, Matthias ; Vogt, Ulrich ; Samad, Abdul ; Goldberg, Valeri ; Ronald, Queck ; Ament, Felix ; Leitl, Bernd ; Surm, Kerstin ; Wiesner, Sarah ; Koßman, Meinolf ; Becker, Ralf ; Heene, Vera ; Hodan, Christina ; Stanislawsky, Peter ; Groß, Günter ; Meusel, Gregor ; Trute, Peter ; Büter, Björn ; Pavlik, Dirk ; Erbertseder, Thilo ; Roiger, Anke ; Klausner, Theresa ; Pühl, Magdalena (2020-06)

Ziel des BMBF-Programms 'Stadtklima im Wandel' war die Entwicklung, Validierung und Anwendung eines gebäudeauflösenden Stadtklimamodells für ganze Städte. Das Verbundprojekt 3DO übernahm die dem Modul B zugeordneten Forschungsaufgaben: Aufbereitung vorhandener Daten aus der Langzeitbeobachtung (LTO), Aufbau neuer Messstationen, Gewinnung neuer dreidimensionaler atmosphärischer Daten und die Ent...

Intra and inter ‘local climate zone’ variability of air temperature as observed by crowdsourced citizen weather stations in Berlin, Germany

Fenner, Daniel ; Meier, Fred ; Bechtel, Benjamin ; Otto, Marco ; Scherer, Dieter (2017-09-24)

A one-year data set for the year 2015 of near-surface air temperature (T$T$), crowdsourced from ‘Netatmo’ citizen weather stations (CWS) in Berlin, Germany, and surroundings was analysed. The CWS data set, which has been quality-checked and filtered in a previous study, consists of T$T$ measurements from several hundred CWS. It was investigated (1) how CWS are distributed among urban and rural ...

Intercomparison of Gridded Precipitation Datasets over a Sub-Region of the Central Himalaya and the Southwestern Tibetan Plateau

Hamm, Alexandra ; Arndt, Anselm ; Kolbe, Christine ; Wang, Xun ; Thies, Boris ; Boyko, Oleksiy ; Reggiani, Paolo ; Scherer, Dieter ; Bendix, Jörg ; Schneider, Christoph (2020-11-21)

Precipitation is a central quantity of hydrometeorological research and applications. Especially in complex terrain, such as in High Mountain Asia (HMA), surface precipitation observations are scarce. Gridded precipitation products are one way to overcome the limitations of ground truth observations. They can provide datasets continuous in both space and time. However, there are many products a...

Atmospheric moisture transport and dynamic precipitation controls on the Tibetan Plateau

Curio, Julia (2020)

The Tibetan Plateau (TP) is the origin of many large Asian rivers, which provide water resources for large regions in south and east Asia. Therefore, the water cycle on the TP and adjacent high mountain ranges, in particular the precipitation distribution and variability play an important role for the water availability for billions of people in the downstream regions of the TP. The respective ...

The contribution of air temperature and ozone to mortality rates during hot weather episodes in eight German cities during the years 2000 and 2017

Krug, Alexander ; Fenner, Daniel ; Mücke, Hans-Guido ; Scherer, Dieter (2020-11-16)

Hot weather episodes are globally associated with excess mortality rates. Elevated ozone concentrations occurring simultaneously also contribute to excess mortality rates during these episodes. However, the relative importance of both stressors for excess mortality rates is not yet known and assumed to vary from region to region. This study analyzes time series of daily observational data of a...

Survival of the Qaidam mega-lake system under mid-Pliocene climates and its restoration under future climates

Scherer, Dieter (2020-07-29)

The Qaidam Basin in the north of the Tibetan Plateau has undergone drastic environmental changes during the last millions of years. During the Pliocene, the Qaidam Basin contained a freshwater mega-lake system although the surrounding regions showed increasingly arid climates. With the onset of the Pleistocene glaciations, lakes began to shrink and finally disappeared almost completely. Today, ...

WRF‐based dynamical downscaling of ERA5 reanalysis data for High Mountain Asia: Towards a new version of the High Asia Refined analysis

Wang, Xun ; Tolksdorf, Vanessa ; Otto, Marco ; Scherer, Dieter (2020-06-18)

The High Asia Refined analysis (HAR) is a regional atmospheric data set generated by dynamical downscaling of the Final operational global analysis (FNL) using the Weather Research and Forecasting (WRF) model. It has been successfully and widely utilized. A new version (HAR v2) with longer temporal coverage and extended domains is currently under development. ERA5 reanalysis data is used as for...

How Cool Are Allotment Gardens? A Case Study of Nocturnal Air Temperature Differences in Berlin, Germany

Rost, Annemarie Tabea ; Liste, Victoria ; Seidel, Corinna ; Matscheroth, Lea ; Otto, Marco ; Meier, Fred ; Fenner, Daniel (2020-05-13)

Urban green infrastructures have been extensively studied for their ability to mitigate the urban heat island (UHI) effect. However, allotment gardens (AGs)—a prominent type of urban green infrastructure within many European cities—have not yet been comprehensively investigated concerning their microclimates. In this study, nocturnal air temperatures (TN) in 13 AG complexes (AGCs) were measured...

Heatwaves and urban thermal climates in Berlin, Germany

Fenner, Daniel (2020)

Due to global climate change, frequency, duration, and intensity of heatwaves (HWs) have increased globally, and are projected to further increase. At the same time, ongoing urbanisation puts more and more people at risk of being adversely affected by HWs, as cities alter atmospheric conditions. Most prominent among these alterations is the phenomenon of the ‘urban heat island’ (UHI), describin...

Temperature and Humidity Measurements in Allotment Gardens in Berlin 2018 and supplementary Temperature Data of urban and rural Meaurement Stations of TU Berlin

Rost, Annemarie Tabea ; Liste, Victoria ; Seidel, Corinna ; Matscheroth, Lea (2020-04-21)

In this study, nocturnal air temperatures (T_N) of 39 sample sites in 15 allotment garden complexes (AGCs) were obtained in a measurement campaign during summer 2018 in Berlin, Germany.

Contrasting changes of urban heat island intensity during hot weather episodes

Fenner, Daniel ; Holtmann, Achim ; Meier, Fred ; Langer, Ines ; Scherer, Dieter (2019-11-27)

Cities typically exhibit higher air temperatures than their rural surroundings, a phenomenon known as the urban heat island (UHI) effect. Contrasting results are reported as to whether UHI intensity (UHII) is exacerbated or reduced during hot weather episodes (HWEs). This contrast is investigated for a four-year period from 2015 to 2018, utilising a set of observational data from high-quality m...

Prominent Midlatitude Circulation Signature in High Asia's Surface Climate During Monsoon

Mölg, Thomas ; Maussion, Fabien ; Collier, Emily ; Chiang, John H. C. ; Scherer, Dieter (2017-11-18)

High Asia has experienced strong environmental changes in recent decades, as evident in records of glaciers, lakes, tree rings, and vegetation. The multiscale understanding of the climatic drivers, however, is still incomplete. In particular, few systematic assessments have evaluated to what degree, if at all, the midlatitude westerly circulation modifies local surface climates in the reach of ...

Occurrence and Coupling of Heat and Ozone Events and Their Relation to Mortality Rates in Berlin, Germany, between 2000 and 2014

Krug, Alexander ; Fenner, Daniel ; Holtmann, Achim ; Scherer, Dieter (2019-06-25)

Episodes of hot weather and poor air quality pose significant consequences for public health. In this study, these episodes are addressed by applying the observational data of daily air temperature and ozone concentrations in an event-based risk assessment approach in order to detect individual heat and ozone events, as well as events of their co-occurrence in Berlin, Germany, in the years 2000...

The Human Influence Experiment (Part 2): Guidelines for Improved Mapping of Local Climate Zones Using a Supervised Classification

Verdonck, Marie-leen ; Demuzere, Matthias ; Bechtel, Benjamin ; Beck, Christoph ; Brousse, Oscar ; Droste, Arjan ; Fenner, Daniel ; Leconte, François ; Van Coillie, Frieke (2019-02-28)

Since 2012, Local Climate Zones (LCZ) have been used for numerous studies related to urban environment. In 2015, this use amplified because a method to map urban areas in LCZs was introduced by the World Urban Database and Access Portal Tools (WUDAPT). However in 2017, the first HUMan INfluence EXperiment showed that these maps often have poor or low quality. Since the maps are used in differen...

Quality of Crowdsourced Data on Urban Morphology—The Human Influence Experiment (HUMINEX)

Bechtel, Benjamin ; Demuzere, Matthias ; Sismanidis, Panagiotis ; Fenner, Daniel ; Brousse, Oscar ; Beck, Christoph ; Van Coillie, Frieke ; Conrad, Olaf ; Keramitsoglou, Iphigenia ; Middel, Ariane ; Mills, Gerald ; Niyogi, Dev ; Otto, Marco ; See, Linda ; Verdonck, Marie-Leen (2017-05-09)

The World Urban Database and Access Portal Tools (WUDAPT) is a community initiative to collect worldwide data on urban form (i.e., morphology, materials) and function (i.e., use and metabolism). This is achieved through crowdsourcing, which we define here as the collection of data by a bounded crowd, composed of students. In this process, training data for the classification of urban structures...

Quality control for crowdsourced data from CWS

Grassmann, Tom ; Napoly, Adrien ; Meier, Fred ; Fenner, Daniel (2018)

This package performs a quality control (QC) and filters suspicious data from citizen weather stations (CWS). It was designed for hourly air temperature data from Netatmo stations but should work with any normally-distributed data.

Micro-scale variability of air temperature within a local climate zone in Berlin, Germany, during summer

Quanz, Justus A. ; Ulrich, Susanne ; Fenner, Daniel ; Holtmann, Achim ; Eimermacher, Jonas (2018)

The urban climate, especially the near-surface air temperature ( T ), is influenced to large amounts by urban surface properties on the local-scale. Landscape classification schemes, like the Local Climate Zone (LCZ) concept, classify neighbourhoods on this scale based on their surface properties, neglecting sub-scale heterogeneity in the urban structure and its potential effects on T . To quan...