Influence of raindrop size distribution on throughfall dynamics under pine and birch trees at the rainfall event level

Zabret, Katarina (avtor), Rakovec, Jože (avtor), Mikoš, Matjaž (avtor), Šraj, Mojca (avtor)

Part of precipitation is intercepted by forest canopies, while the rest reaches the ground as throughfall or stemflow. This process is influenced by various meteorological variables, of which we have mainly focused on drop diameter and velocity. Rainfall in the open and throughfall under birch and pine trees have both been measured since 2014 in Ljubljana, Slovenia. The results demonstrate that the total throughfall during 3.5 years was 73% and 53% of rainfall under birch and pine trees, respectively. During the 236 analysed events, the median volume diameter was 1.8 mm (±1.7 mm), and kinetic energy between 0.01 mJ/cm$^2$ and 23.3 mJ/cm$^2$ was recorded. We closely analysed the effect of rainfall microstructure on throughfall under pine and birch trees during three specific rainfall events. The increase in drop diameter and fall velocity during a rainfall event instantaneously increased throughfall under pine trees between 25% and 47%, whereas no such changes were observed under birch trees. This may be the consequence of different tree properties of the two species. Additionally, in the case of a saturated canopy, throughfall under pine trees exceeded rainfall in the open after an onset of larger and faster drops.

• Jezik: Angleški jezik
• Ključne besede: hydrology, rainfall, rainfall interception, throughfall, raindrop size distribution, drop velocity, birch, pine, Slovenia
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo ; FMF - Fakulteta za matematiko in fiziko
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2017
• Št. strani: 15 str.
• Številčenje: Vol. 8, iss. 12, art. 240
• PID: 20.500.12556/RUL-131002
• UDK: 556.1
• ISSN pri članku: 2073-4433
• DOI: 10.3390/atmos8120240
• COBISS.SI-ID: 8231265
• Datum objave v RUL: 21.09.2021

Gradivo je del revije

• Naslov: Atmosphere
• Skrajšan naslov: Atmosphere
• Založnik: MDPI
• ISSN: 2073-4433
• COBISS.SI-ID: 522992153

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 02.12.2017

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: hidrologija, padavine, prestrežne padavine, prepuščene padavine, porazdelitev velikosti kapljic, hitrost kapljic, breza, bor, Slovenija

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Program financ.: PhD grant