Nature, Journal Year: 2023, Volume and Issue: 623(7989), P. 891 - 891
Published: Nov. 23, 2023
Language: Английский
Remote Sensing, Journal Year: 2025, Volume and Issue: 17(7), P. 1269 - 1269
Published: April 2, 2025
Global forest degradation and deforestation present urgent environmental challenges demanding efficient strategies for ecological restoration to maximize the impacts minimize costs. This study aims develop a spatial decision support tool prioritize post-fire actions in Mediterranean ecosystems, with focus on Cyprus. At core of this is GRESTO Index (GreenHIT-RESTORATION Index), novel geospatial designed guide reforestation efforts fire-affected areas. integrates data criteria through multi-criteria decision-making approach based Analytic Hierarchy Process (AHP). The model incorporates nine key indicators, including fire severity, tree density, land cover, history, slope, elevation, aspect, precipitation, temperature, classifies priority zones into low, medium, high categories. When applied Solea event Cyprus, identified 24% area as priority, 66% medium 10% low. validation against previous implemented demonstrated reliable agreement, an overall accuracy 80.9%, recall 0.70 areas, AUC 0.79, indicating very good separability. Moreover, sensitivity analysis further confirmed robustness under varying parameter weights. These findings highlight model’s potential data-driven, cost-effective planning aligned national international goals.
Language: Английский
Citations
1
Atmospheric chemistry and physics, Journal Year: 2024, Volume and Issue: 24(3), P. 1997 - 2021
Published: Feb. 14, 2024
Abstract. The highlight of the meanwhile 50 years lidar-based aerosol profiling at Garmisch-Partenkirchen has been measurements stratospheric since 1976. After a technical breakdown in 2016, they have continued with new, much more powerful system vertical range up to almost km a.s.l. (above sea level) that allowed for observing very weak volcanic 40 km. observations 2017 are characterized by number spectacular events, such as Raikoke plume equalling integrated backscatter coefficient Mt St Helens 1981 and severe smoke from several big fires North America Siberia coefficients maximum values after Pinatubo eruption. violent British Columbia gradually reached than 20 a.s.l., unprecedented our observations. sudden increase frequency strong events is difficult understand. Finally, underwater eruption on Tonga Islands southern Pacific January 2022 was detected between 25
Language: Английский
Citations
4
Atmospheric chemistry and physics, Journal Year: 2025, Volume and Issue: 25(3), P. 1603 - 1615
Published: Feb. 5, 2025
Abstract. The fluorescence lidar at the Prokhorov General Physics Institute (Moscow) was utilized to study smoke transported over Atlantic during wildfire season from May September 2023. system, which is based on a tripled Nd : YAG laser, performs measurements across five spectral intervals centered wavelengths of 438, 472, 513, 560 and 614 nm. This configuration enables assessment dependence backscattering broad range altitudes, planetary boundary layer (PBL) middle upper troposphere (MUT). capacity smoke, defined as ratio aerosol laser wavelength, exhibits significant variation in MUT, with changes up factor 3. likely indicative differences relative concentration organic compounds within smoke. Analysis more than 40 episodes has enabled an evaluation height properties. Observations reveal that generally increases altitude, suggesting higher MUT compared lower troposphere. Additionally, consistently show spectra urban aerosol. Urban tends decrease gradually whereas peak observed 513 nm channels. distinction provides effective means separating technique applied analysis events where descended into PBL, demonstrating its utility distinguishing between these types.
Language: Английский
Citations
0
Journal of Advances in Modeling Earth Systems, Journal Year: 2025, Volume and Issue: 17(4)
Published: April 1, 2025
Abstract Vegetation fires have become increasingly recognized as a potential entrainment mechanism for mineral dust. However, the global importance of this emission pathway remains largely unknown. Based on previous LES investigations, we developed parameterization that relates dust wildfires to observational data fire radiative power and further soil‐surface conditions. It was implemented into aerosol‐climate model ICON‐HAM simulations with without new were conducted 10‐year period 2004–2013. Fire‐dust emissions can account around 230 (190–255) Tg yr −1 , which represents 18 (15–21) % total emissions. These additional originate from regions are typically not known significant sources Locally, enhance presence atmospheric particles Southern hemisphere might even surpass other forms emission. Highly active identified in areas where burning grasslands create suitable conditions together emissive soil types despite rather weak fires, example, Eastern Europe or Central US. subject strong seasonal cycle, mainly driven by activity, following hemispheric warm dry seasons. Multi‐year comparisons (dust) AOD observations revealed improvements due fire‐dust emissions, particularly most fire‐active hemisphere. Nevertheless, research required better classify source their variation changing climate land use
Language: Английский
Citations
0
Atmospheric chemistry and physics, Journal Year: 2025, Volume and Issue: 25(7), P. 3995 - 4011
Published: April 9, 2025
Abstract. One of the most powerful instruments for studying aerosol particles and their interactions with environment is atmospheric lidar. In recent years, fluorescence lidar has emerged as a useful tool identifying due to its link biological content. Since 2022, this technique been implemented in Leipzig, Germany. This paper describes experimental setup data analysis, special emphasis on characterization new channel centered at 466 nm. The capabilities are examined corroborated through several case studies. Most measurement cases considered from spring summer 2023, when large amounts biomass-burning huge forest fires Canada were transported Europe. observed layers characterized. For wildfire smoke, capacity was typically range 2×10-4–7 × 10−4, which aligns well values reported literature. key aspects study technique, can potentially improve not only typing but even detection particles. an apparently low load, clearly revealed presence that detectable traditional elastic-backscatter channels. capability discussed detail linked fact backscattering related only. A second area potential distinction between non-activated hydrometeors, given water's inability exhibit fluorescence. smoke–cirrus suggests influence layer cloud formation, it seems affect coefficient within passing time. These aforementioned applications promise advancements towards more detailed view aerosol–cloud interaction problem.
Language: Английский
Citations
0
Atmospheric chemistry and physics, Journal Year: 2025, Volume and Issue: 25(9), P. 4847 - 4866
Published: May 9, 2025
Abstract. The potential impact of wildfire smoke on Arctic cirrus formation is discussed based lidar and radar observations during the winter half year 1-year MOSAiC (Multidisciplinary drifting Observatory for Study Climate) expedition. Aerosol ice cloud were performed aboard icebreaker Polarstern at latitudes > 85° N. Aged Siberian polluted tropopause region over central entire 2019–2020. particle surface area concentration was order 5–15 µm2 cm−3 indicated considerably enhanced levels aerosol pollution more than 6 months. Numerous systems with cloud-top temperatures between −60 −75 °C developed in upper troposphere. We analyzed all layers respect to their geometrical optical properties a subgroup 20 events water content (IWC) crystal number (ICNC). In individual fallstreaks that are connected nucleation events, ICNCs typically ranged from 1 10 crystals L−1 but frequently also as high 20–50 L−1; however, 100 rare. Three observational facts corroborate our hypothesis significantly influenced formation: (1) occurrence long-lasting, persistent layer troposphere so favorable conditions heterogeneous particles always given and, same time, homogeneous freezing background probably widely suppressed; (2) concentrations, which enough trigger (as shown Part 2, companion paper this article; Ansmann et al., 2025); (3) found maximum saturation ratios 1.3–1.5, point dominance processes, initiated by inefficient ice-nucleating (INPs), expected when aged (i.e., organic particles) serve INPs. studies continued simulation portion work (Part 2; 2025).
Language: Английский
Citations
0
Published: June 21, 2024
Aerosol-cloud interactions play a crucial role in shaping Earth’s climate and hydrological 1 cycle. Observing these with high precision accuracy is of the utmost importance 2 for improving models predicting climate. Over past few decades, lidar 3 techniques have emerged as powerful tools investigating aerosol-cloud due to their 4 ability provide detailed vertical profiles aerosol particles clouds spatial 5 temporal resolutions. This review paper provides an overview recent advancements study 6 using techniques. The begins description 7 different cloud microphysical processes that are affected by presence aerosol, 8 outline remote sensing application characterizing clouds. 9 subsequent sections delve into key findings insights gained from lidar-based studies 10 interactions. includes investigations 11 formation, evolution, properties. Finally, concludes outlook 12 on future research. By reporting latest methodologies, this aims 13 valuable researchers engaged science atmospheric
Language: Английский
Citations
1
Remote Sensing, Journal Year: 2024, Volume and Issue: 16(15), P. 2788 - 2788
Published: July 30, 2024
Aerosol–cloud interactions play a crucial role in shaping Earth’s climate and hydrological cycle. Observing these with high precision accuracy is of the utmost importance for improving models predicting climate. Over past few decades, lidar techniques have emerged as powerful tools investigating aerosol–cloud due to their ability provide detailed vertical profiles aerosol particles clouds spatial temporal resolutions. This review paper provides an overview recent advancements study ACI using techniques. The begins description different cloud microphysical processes that are affected by presence aerosol, outline remote sensing application characterizing clouds. subsequent sections delve into key findings insights gained from lidar-based studies interactions. includes investigations formation, evolution, properties. Finally, concludes outlook on future research. By reporting latest methodologies, this aims valuable researchers engaged science atmospheric
Language: Английский
Citations
1
Atmospheric chemistry and physics, Journal Year: 2024, Volume and Issue: 24(19), P. 11431 - 11450
Published: Oct. 14, 2024
Abstract. This study analyzes the vertical distribution, optical properties, radiative forcing, and several perturbation events of stratospheric aerosols using observations from a ground-based polarization lidar in Wuhan (30.5° N, 114.4° E) 2010 to 2021. The background aerosol depth (sAOD) was 0.0044 ± 0.0019 at 532 nm, as calculated during stratosphere-quiescent period January 2013 August 2017. In addition, cases volcanic wildfire-induced smoke were observed. Volcanic Nabro (2011) Raikoke (2019) eruptions (both boreal summer) increased sAOD 2.9 times level. Tracers Canadian wildfire summer 2017 observed twice, 19–21 km on 14–17 September 20–23 28–31 October, with plume-isolated (AOD) 0.002–0.010 particle linear depolarization ratio δp 0.14–0.18, indicating dominance non-aged particles. During these summertime events, injected captured by large-scale Asian monsoon anticyclone (AMA), confining transport pathway mid-latitude Asia. On 8–9 November 2020, plumes originating California October 2020 appeared 16–17 km, mean 0.13. Regarding seasonal variation, cold half-year (0.0054) is 69 % larger than warm (0.0032) due stronger meridional tropics middle latitudes. forcing −0.11 W m−2 −0.31 when largely injected. These findings contribute our understanding sources patterns over Asia serve an important database for validation model outputs.
Language: Английский
Citations
1
ACS ES&T Air, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 26, 2024
Wildfires are increasing in intensity and more often threatening the wildland urban interface (WUI) where buildings homes coexist with natural environment. WUI emissions have not been as well-studied from vegetation. Thus, there is a need to quantify of building materials used home construction under flaming smoldering conditions study their impacts human health, visibility, air quality, climate. Here, controlled laboratory setting, we aerosols trace gases including formaldehyde, particulate matter, black carbon. We focus on combustion traditional single-source wood-based fuels. Our results indicate that, similar fuels, aerosol optical properties were related than fuel type. Overall, observed significant variability gas particle emissions. Consistent trends include high formaldehyde (HCHO) carbon monoxide (CO) for higher dioxide (CO2), nitrogen oxides (NOx), conditions. These observations highlight better characterize built environment assess large-scale climate health fires at WUI.
Language: Английский
Citations
1