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Visar resultat 1 - 5 av 10 avhandlingar som matchar ovanstående sökkriterier.

1. 1. On the intra-seasonal to decadal climate variability over South-Asia

   Författare :Faisal Saeed Syed; Heiner Körnich; Erik Kjellström; Jagadish Shukla; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; South Asia; monsoon; western disturbances; fog; climate variability; climate dynamics; teleconnections; ENSO; NAO; CGT; atmosfärvetenskap och oceanografi; Atmospheric Sciences and Oceanography;

   Sammanfattning : South Asia, a land of contrasting landscapes, seasons and climates, is highly vulnerable to climate variability over intra-seasonal to decadal time scales. In winter, precipitation over the western parts of south Asia and fog over the Indo-Gangetic (IG) plains are the two major climatic features. LÄS MER

3. 2. A combined carbon and hydrogen isotope approach to reconstruct the SE Asian paleomonsoon : Impacts on the Angkor Civilization and links to paleolimnology

   Författare :Kweku Kyei Afrifa Yamoah; Rienk Smittenberg; Sarah Feakins; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Holocene; summer monsoon; biomarkers; hydrogen isotopes; lake sediment; peat; Thailand; geokemi; Geochemistry;

   Sammanfattning : Changes in monsoon patterns not only affect ecosystems and societies but also the global climate system in terms of heat energy and humidity transfer from the equator to higher latitudes. However, understanding the mechanisms that drive monsoon variability on longer timescales remains a challenge, partly due to sparse paleoenvironmental and paleoclimatic data. LÄS MER

4. 3. Asian monsoon over mainland Southeast Asia in the past 25 000 years

   Författare :Akkaneewut Chabangborn; Barbara Wohlfarth; Karen Kohfeld; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Asian monsoon; ITCZ; palaeo-vegetation; palaeoclimate; lake sediment; Last Glacial Maximum; Holocene; Marine Geoscience; marin geovetenskap;

   Sammanfattning : The objective of this research is to interpret high-resolution palaeo-proxy data sets to understand the Asian summer monsoon variability in the past. This was done by synthesizing published palaeo-records from the Asian monsoon region, model simulation comparisons, and analysing new lake sedimentary records from northeast Thailand. LÄS MER

5. 4. Towards an improved understanding of precipitation variations over the Tibetan Plateau

   Författare :Hui-Wen Lai; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Third Pole; Tibetan Plateau; precipitation; Asian summer monsoon; westerly jets; Regional Climate Model; satellite observation;

   Sammanfattning : The Tibetan Plateau (TP) and surrounding regions are known as the ``Third Pole'' because of their polar-like environment and large reservoirs of fresh water. Due to the latter aspect, the TP is also considered the ``Water Tower of Asia'', providing essential water resources to the surrounding regions. LÄS MER

7. 5. Paleoenvironmental and paleoclimatic changes in northeast Thailand during the Holocene

   Författare :Sakonvan Chawchai; Barbara Wohlfarth; Richard Bindler; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Paleoenvironment; paleoclimatic; sediment; peat; multi-proxy; Asian monsoon; the Holocene; Marine Geology; maringeologi;

   Sammanfattning : The long-term climatic and environmental history of Southeast Asia is still fragmentary. This thesis therefore aims at studying lake sediment/peat sequences using a multi-proxy approach to reconstruct the environmental history and the impact of past changes in monsoon variability and intensity on lake ecosystems in Thailand. LÄS MER