Vlad-Alexandru Amihăesei

ORCID: 0000-0001-6681-1330
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About
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Research Areas
  • Urban Heat Island Mitigation
  • Climate variability and models
  • Cryospheric studies and observations
  • Remote Sensing and Land Use
  • Land Use and Ecosystem Services
  • Meteorological Phenomena and Simulations
  • Climate change and permafrost
  • Climate Change and Health Impacts
  • Urban Green Space and Health
  • Climate change impacts on agriculture
  • Remote Sensing in Agriculture
  • Crop Yield and Soil Fertility
  • Diverse Aspects of Tourism Research
  • Marine and environmental studies
  • Hydrology and Drought Analysis
  • Plant Ecology and Soil Science
  • Precipitation Measurement and Analysis
  • Landslides and related hazards
  • Hydrological Forecasting Using AI
  • Rangeland Management and Livestock Ecology
  • Wind and Air Flow Studies
  • Air Quality Monitoring and Forecasting
  • Plant responses to elevated CO2
  • COVID-19 epidemiological studies
  • COVID-19 impact on air quality

Administraţia Naţională de Meteorologie
2019-2024

Alexandru Ioan Cuza University
2020-2024

National Institute of Meteorology
2023

Large-scale hydrological models simulate the water cycle for regions, countries, and continents. The choice of input data directly impacts accuracy these models' final output spatial temporal pattern, as well quality (air temperature precipitation), influences pattern availability estimates. It is essential to acknowledge that estimates depends on used.In this regard, precipitation air gridded European Meteorological Observations (EMO1) datasets specifically used modeling inputs (CWATM) are...

10.5194/egusphere-egu25-16995 preprint EN 2025-03-15

Mountain regions are particularly vulnerable to natural hazards, such as snow avalanches, landslides, or flash-flooding, which increasingly exacerbated by climate warming and changing patterns. This paper leverages the Copernicus Regional ReAnalysis for Europe (CERRA) dataset, with 5 km x spatial resolution, from Climate Change Service (C3S), covering period 1985–2020, analyse of seasonal patterns depth snowfall in two major European mountain ranges: Alps Carpathians. More...

10.5194/egusphere-egu25-15922 preprint EN 2025-03-15

The aim of this study was to evaluate the frequency and severity drought over arable lands Romania using Normalized Difference Drought Index (NDDI). This index obtained from Moderate Resolution Imaging Spectro-Radiometer (MODIS) sensor Terra satellite. interval between March September investigated occurrence early stage crop growth its harvest time. covered a long period (2001–2020), hence it is able provide sound climatological image vegetation conditions. Corine Land Cover 2018 (CLC) used...

10.3390/rs13081478 article EN cc-by Remote Sensing 2021-04-12

Land degradation (LD) and desertification (DS) are a sensitive global issue including southern south-eastern Europe, which is severely affected by climate change. In this study, state-of-the-art approach for assessing the intensity of LD DS processes using remote-sensing-derived indicators within GIS environment was proposed. The analysis carried out Principal Component Analysis based on integrating significant trends relevant biophysical parameters in Romania. methodology tested validated...

10.3390/rs15194842 article EN cc-by Remote Sensing 2023-10-06

Study Region: Romanian territory and the Carpathian Mountains, Romania. focus: We provide a consistent picture of long-term changes in relevant snow cover characteristics, including phenology (timing onset melting), duration, frequency snow-free days Romania, from 1961 to 2020, that could be for understanding regional dynamics terrestrial water resources. New hydrological insights: The trend behaviour shows different between elevation bands Koeppen-Geiger climate regions which may play...

10.1016/j.ejrh.2023.101637 article EN cc-by Journal of Hydrology Regional Studies 2023-12-29

The widespread availability of Land Surface Temperature (LST) data from various sources presents a contemporary challenge for urban climate studies: how to efficiently compare these with the results traditional methods temperature monitoring, which typically assume measurements at 2 m under sheltered conditions. In this line, current study is based primarily on extracted network 31 points hourly monitoring level (Tair2m), in use between 2019 and 2021, city Suceava north-eastern Romania....

10.3390/rs16162967 article EN cc-by Remote Sensing 2024-08-13

Using MODIS and Landsat LST images, the present paper advances a series of results on characteristics surface heat island (SUHI) Bacău City (Romania) during warm season (April to September) for period 20 years (2001–2020). At same time, given their higher temporal resolution availability both day night, was used understand spatial features SUHI in relation land use. In this way, total 946 Terra 483 satellite images were outline main days with clear sky middle-sized city northeast Romania....

10.3390/rs15133385 article EN cc-by Remote Sensing 2023-07-03

Respiratory infectious diseases are highly influenced by climate and feature seasonality, whose peak is December to February in the Northern Hemisphere. SARS-CoV-2 produced consistent debate regarding relationship between its emergence weather conditions. Our study explored these conditions, expressed three main parameters—ultraviolet radiation, air temperature relative humidity—that characterized Hubei (China), source region of COVID-19 pandemic, November 2019–March 2020. During outbreak,...

10.4209/aaqr.2020.05.0206 article EN Aerosol and Air Quality Research 2020-01-01

Abstract Four climate parameters (i.e. maximum, mean and minimum air temperature precipitation amount) from 10 regional models, provided by the EURO‐CORDEX initiative, are adjusted using as reference ROCADA gridded dataset. The adjustment was performed on a daily temporal resolution for historical period (1971–2005), well change scenarios based two Representative Concentration Pathways (RCP4.5 RCP8.5). most accurately method bias‐correction (BC) selected following 2‐fold cross‐validation...

10.1002/gdj3.161 article EN Geoscience Data Journal 2022-04-25

Seasonal snowpack plays a significant role in the climate system. Its characteristics are monitored as change indicators considering snow importance from ecological, hydrological, and economic perspectives. Observation data provides evidence of declining depth, spatial extent duration cover, connection to changes seasonal air temperature precipitation, especially lowlands mid-elevation mountain areas. However, these underpin occurrence compound hazards resulting joint actions rain...

10.5194/ems2024-407 preprint EN 2024-08-16

Abstract. The impact of climate change on crops and agricultural yield is an actual threat while being a challenging issue due to the high complexity factors that intervene at local scale crop. Assessing it, requires use coupled models climate-phenology, meanwhile methods identify management genotypes suitable for future conditions, in order sustain adaptation strategies. We present implementation new integrated climate-phenology support modeling system based regional CORDEX CERES Maize...

10.5194/gmd-2024-105 preprint EN cc-by 2024-07-11

A plain region covering 8000 km2 in extreme north-eastern Romania which two groundwater levels are identified, near the surface (1.5 m) and in-depth (4.5 respectively. The statistical relationship between climate conditions underground water resources was assessed by means of correlation analysis autoregressive neural networks (ANNs). Based on this, study explores quantitative changes towards end this century according to most relevant scenarios regarding evolution air temperature...

10.1016/j.ejrh.2022.101108 article EN cc-by-nc-nd Journal of Hydrology Regional Studies 2022-05-20

The Landsat 8 satellites have retrieved land surface temperature (LST) resampled at a 30-m spatial resolution since 2013, but the urban climate studies frequently use limited number of images due to problems related missing data over city interest. This paper endorses procedure for building long-term gap-free LST set in an area using high-resolution imagery. study is applied on 94 available through 2013–2018 Bucharest (Romania). raw containing between 1.1% and 58.4% were filled Data...

10.3390/s20185336 article EN cc-by Sensors 2020-09-17

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

10.2139/ssrn.4453641 preprint EN 2023-01-01

Cities emerge as particularly vulnerable environments to climate extremes, exacerbated by the observed change These are human heat stress hotspots due amplified contribution of urban island effect and joint action extreme weather events  The study aims detect quantify changing signals in combined hazard (CHH), associated with concurrent hot days (HD - maximum temperature above 30˚C) nights (HN minimum 20˚C) 40 large cities Romania (>100,000 inhabitants),...

10.5194/egusphere-egu24-18972 preprint EN 2024-03-11

ABSTRACT The crossroad between built‐up areas and extreme heat generates severe consequences on both socio‐ecological systems the natural environment, cities are most vulnerable. impact is already significant in present climate it will be exacerbated under change many regions, including Romania especially its southern part. heatwaves (HWs) a major risk for our as they put constant pressure population, infrastructure services several consecutive days. urban HWs 41 Romanian analysed terms of...

10.1002/joc.8714 article EN other-oa International Journal of Climatology 2024-12-09

The paper presents the temporal variability of surface ozone (O3) and its precursors (oxides nitrogen - NOx) from January 2012 to December 2015. In same time, this study is aimed explore influence weather elements on these two major atmospheric pollutants in area Iași city. maximum record oxides reached during 4 analyzed years was 1200 μ/m-3 October 27, 2015, a period year when stability prevails. During warm season (considered May September) highest concentration recorded at 155 μ/m-3....

10.15551/pesd2019132005 article EN cc-by-nc-nd Present Environment and Sustainable Development 2019-10-15

<p>Heat-related hazards pose major risks to our cities and the projected climate changes indicate substantial increases in impacts, a better understanding of interactions between environmental human health are particularly critical for improving living quality urban areas change context. The considerable progress monitoring, modelling, analysing methods has addressed increasing demand enhanced accuracy, finer resolution, accessibility products services, including specific needs...

10.5194/egusphere-egu22-11749 preprint EN 2022-03-28
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