TRMM-based rainfall variability over the Central Mediterranean and its relationships with atmospheric and oceanic climatic modes

Kalimeris, A.; Kolios, Stavros

doi:10.1016/j.atmosres.2019.104649

Cited by 16 publications

(12 citation statements)

References 87 publications

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“…The temperature field variability of the Eastern Mediterranean indicates a generally positive inter-annual temperature trend from 2014 both from the modelled data outputs and the remote sensing observations. The thermohaline variability in the upper layers of the Eastern Mediterranean can be partly assigned to air-sea heat exchanges, reduced upwelling events, alternations of the mesoscale circulation in the area and anomalies in large-scale atmospheric systems such as the North Atlantic Oscillation (Chronis et al 2011;Kalimeris and Kolios 2019), and the positive inter-annual temperature trend is in agreement with previous studies on the sea surface temperature, and the upper layers of the Eastern Mediterranean, derived from satellite data (i.e. Pastor et al 2019) and in-situ measurements (Kassis and Korres 2020) accordingly.…”

Section: Temperature Field Variabilitymentioning

confidence: 99%

Copernicus Marine Service Ocean State Report, Issue 5

Schuckmann¹,

Traon²,

Smith³

et al. 2021

Journal of Operational Oceanography

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DisclaimerInforma UK Limited, trading as Taylor & Francis Group, make every effort to ensure the accuracy of all the information (the "Content") contained in our publications. However, Informa UK Limited, trading as Taylor & Francis Group, our agents, and our licensors make no representations or warranties whatsoever as to the accuracy, completeness, or suitability for any purpose of the Content. Any opinions and views expressed in this publication are the opinions and views of the authors, and are not the views of or endorsed by Informa UK Limited, trading as Taylor & Francis Group. The accuracy of the Content should not be relied upon and should be independently verified with primary sources of information. Informa UK Limited, trading as Taylor & Francis Group, shall not be liable for any losses, actions, claims, proceedings, demands, costs, expenses, damages, and other liabilities whatsoever or howsoever caused arising directly or indirectly in connection with, in relation to or arising out of the use of the Content.

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Section: Temperature Field Variabilitymentioning

confidence: 99%

Copernicus Marine Service Ocean State Report, Issue 5

Schuckmann¹,

Traon²,

Smith³

et al. 2021

Journal of Operational Oceanography

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“…As IMERG is the de facto update of the TRMM database and project, its use is recommended in applications where TRMM proved a reliable data source. Even though high-resolution precipitation products like IMERG and TRMM are designed to provide the best precipitation estimates and not climate data records, studies that have analyzed the skill in TRMM in reproducing precipitation data showed good-to-excellent correlations (0.75-0.96) with ground-based data [45][46][47]. Comparing IMERG data for Italy with other studies of TRMM precipitation in the area, the strong correlation between TRMM and IMERG is clear [18].…”

Section: Discussionmentioning

confidence: 83%

IMERG-Based Meteorological Drought Analysis over Italy

Caloiero

Caroletti

Coscarelli

2021

Climate

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The Mediterranean region is an area particularly susceptible to water scarcity and drought. In this work, drought has been analyzed in Italy using multiple timescales of the standardized precipitation index (SPI) evaluated from the Integrated Multi-satellitE Retrievals for Global Precipitation Measurement product from 2000 to 2020. In particular, drought characteristics (severity, duration, and intensity) have been estimated by means of the run theory applied to the SPI values calculated in 3325 grid points falling within the Italian territory. Results clearly indicate that although a high number of drought events has been identified for the short timescale, these events present a lower duration and lesser severity than the long-timescale droughts. The main outcomes of this study, with the indication of the spatial distribution of the drought characteristics in Italy, allow identifying the areas that could also face water stress conditions in the future, thus requiring drought monitoring and adequate adaptation strategies.

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“…Among the different TPs we tested, Scand and WeMO have obviously the strongest impact on heat and water fluxes in the study region. In its positive phase the Scand is associated with an arrival of air masses from northern Europe which then reach the French Mediterranean coast via a south-easterly flow over the Mediterranean (Kalimeris and Kolios, 2019;Krichak et al, 2014;Bueh and Nakamura, 2007;Lionello et al, 2006). Positive phases of WeMO correspond to a low-pressure centre located over central and eastern Europe and to an anticyclone in the southwest of Spain (Martin-Vide and Lopez-Bustins, 2006), which favours the arrival of air masses of Atlantic origin in our study region via a north-easterly flow.…”

Section: Discussionmentioning

confidence: 99%

Declining water resources in response to global warming and changes in atmospheric circulation patterns over southern Mediterranean France

Labrousse

Ludwig

Pinel

et al. 2021

Preprint

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Abstract. Warming trends are responsible for an observed decrease of water discharge in Southern France (northwestern Mediterranean). Ongoing climate change and the likely increase of water demand threaten the availability of water resources over the coming decades. Drought indices like the Reconnaissance Drought Index (RDI) are increasingly used in climate characterization studies, but little is known about the relationships between these indices, water resources and the overall atmospheric circulation patterns. In this study, we investigate the relationships between the RDI drought index, water discharge and four atmospheric teleconnection patterns (TPs) for six coastal river basins in southern France, both for the historical period of the last 60 years and for a worst-case climatic scenario (RCP 8.5) reaching the year 2100. We combine Global and Regional Climate Model (CGM and RCM, respectively) outputs with a set of observed climatic and hydrological data in order to investigate the past relationships between RDI, water discharge and TPs and to project their potential evolutions in space and time. Results indicate that annual water discharge can be reduced by −49/−88 % by the end of the century under the extreme climate scenario conditions. Due to unequal links with TPs, the hydro-climatic evolution is unevenly distributed within the study area. Indeed a clustering analysis performed with the RDI time series detects two major climate clusters, separating the eastern and western part of the study region. The former indicates stronger relationships with the Atlantic TPs (e.g. the NAO and the Scand patterns) whereas the latter is more closely related to the Mediterranean TPs (MO and WeMO). The future climate simulations predict an antagonistic evolution in both clusters which are likely driven by decreasing trends of Scand and WeMO. The former provokes a general tendency of lower P in both clusters during spring, summer and autumn, whereas the latter might partly compensate this evolution in the eastern cluster during autumn and winter. However, compared to observations, representation of the Mediterranean TPs WeMO and MO in the considered climate models is less satisfactory compared to the Atlantic TPs NAO and Scand, and further improvement of the model simulations therefore requires better representations of the Mediterranean TPs.

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TRMM-based rainfall variability over the Central Mediterranean and its relationships with atmospheric and oceanic climatic modes

Cited by 16 publications

References 87 publications

Copernicus Marine Service Ocean State Report, Issue 5

Copernicus Marine Service Ocean State Report, Issue 5

IMERG-Based Meteorological Drought Analysis over Italy

Declining water resources in response to global warming and changes in atmospheric circulation patterns over southern Mediterranean France

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