ORCID Profile
0000-0001-7095-1715
Current Organisations
Newcastle University
,
University of North Carolina at Chapel Hill
,
Catholic University of Louvain
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Publisher: Elsevier BV
Date: 03-2021
Publisher: American Physical Society (APS)
Date: 19-02-2020
Publisher: Springer Science and Business Media LLC
Date: 07-08-2017
DOI: 10.1038/NCLIMATE3361
Publisher: Elsevier BV
Date: 11-2022
Publisher: Scientific Research Publishing, Inc.
Date: 2017
Publisher: American Geophysical Union (AGU)
Date: 21-07-2020
DOI: 10.1029/2020GL088758
Abstract: Although observations and modeling studies show that heavy rainfall is increasing in many regions, how changes will manifest themselves on sub‐daily timescales remains highly uncertain. Here, for the first time, we combine observational analysis and high‐resolution modeling results to examine changes to extreme rainfall intensities in urbanized Kuala Lumpur, Malaysia. We find that hourly intensities of extreme rainfall have increased by ~35% over the last three decades, nearly 3 times more than in surrounding rural areas, with daily intensities showing much weaker increases. Our modeling results confirm that the urban heat island effect creates a more unstable atmosphere, increased vertical uplift and moisture convergence. This, combined with weak surface winds in the Tropics, causes intensification of rainfall extremes over the city, with reduced rainfall in the surrounding region.
Publisher: National Research University, Higher School of Economics (HSE)
Date: 2018
Publisher: Springer Science and Business Media LLC
Date: 07-02-2020
DOI: 10.1007/S00382-020-05144-2
Abstract: There is an urgent need for high-quality and high-spatial-resolution hourly precipitation products around the globe, including the UK. Although hourly precipitation products exist for the UK, these either contain large errors, or are insufficient in spatial resolution. An efficient way to solve this is to develop a merged precipitation product that combines the information and benefits from multiple data sources, improving both the spatial resolution and accuracy of hourly precipitation estimates over the UK. In this study, we develop a UK high-resolution gauge–radar–satellite merged hourly precipitation analysis: the UKGrsHP. It covers the UK from 12.5° W to 3.5° E, 49° N–60° N, with a spatial resolution of 0.01° × 0.01° in latitude/longitude (equivalent to 1 km resolution in the mid-latitudes). An optimal interpolation (OI)–based multi-source merging scheme with compound strategy is developed and tested for producing the UKGrsHP. Three input data sources are used: gauge analysis data interpolated from 1903 quality-controlled hourly observations, the UK Nimrod radar precipitation analysis and the GSMaP global satellite precipitation analysis. Using independent tests against ~ 220 independent gauge observations on 1 year’s experimental UKGrsHP, covering the period from January to December 2014, we find that the final merged data performs better than three in idual precipitation analyses used as inputs. A full version of the UKGrsHP starting in April 2004 is now under production, which will have wide applications in climate services and scientific research across multiple disciplines.
Publisher: Springer Science and Business Media LLC
Date: 21-02-2018
Publisher: Macrothink Institute, Inc.
Date: 15-08-2017
Abstract: The current document analyzed the statistical data for the year 2015 to make a comparative analysis in the case of China and Pakistan. The results conclude the migration and the refugee related challenge in Pakistan is the most critical factor to be observed and demands high level of attention. On the other side, the strengthening infrastructure in china is the massive pull factor to increase urbanization and economic growth. Moreover, the future lessons learnt from the China’s progressive growth can improve the pace of urbanization in the neighboring region like Pakistan. However, the china’s economic growth is dominating by the industrialization trend as china can be labeled as World’s factory. However, Pakistan’s agricultural dependency on the economic growth makes both economic developmental approaches distinct. It can be also concluded that the urbanization as a phenomenon requires multi-dimensional and multi-disciplinary view to improve and understand urbanization trends.
Publisher: American Physical Society (APS)
Date: 24-02-2021
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
Location: United States of America
No related grants have been discovered for Robert V.F. Janssens.