Reply on RC1 DOI Creative Commons
Danny Croghan

Published: Nov. 3, 2023

Abstract. Dissolved organic carbon (DOC) dynamics are evolving in the rapidly changing Arctic and a comprehensive understanding of controlling processes is urgently required. For example, transport governing DOC prone to climate driven alteration given their strong seasonal nature. Hence, high-resolution long-term studies required assess potential inter-annual changes processes. In this study, we monitored at 30-minute resolution from September 2018 December 2022 headwater peatland-influenced stream Northern Finland (Pallas catchment, 68° N). To multiple methods were used: concentration – discharge (C-Q) slope for analysis, modified hysteresis index event yield random forest regression models determine hydroclimatic controls on transport. The findings reveal following distinct patterns: (a) C-Q relationship displays trend, indicating increasing limitation each month after snowmelt begins; (b) decreases post-snowmelt, signifying influence distal sources mobilization through slower pathways; (c) interannual variations these metrics generally low, often smaller than month-to-month fluctuations. These results highlight importance detailed monitoring enable separation inter intra annual variability better understand complexities This study contributes broader comprehension because knowledge gained regarding dominant mechanisms vital evaluating how cycle will change future ecosystems.

Language: Английский

Seasonal and interannual dissolved organic carbon transport process dynamics in a subarctic headwater catchment revealed by high-resolution measurements DOI Creative Commons
Danny Croghan, Pertti Ala‐aho, J. M. Welker

et al.

Hydrology and earth system sciences, Journal Year: 2024, Volume and Issue: 28(4), P. 1055 - 1070

Published: Feb. 29, 2024

Abstract. Dissolved organic carbon (DOC) dynamics are evolving in the rapidly changing Arctic and a comprehensive understanding of controlling processes is urgently required. For example, transport governing DOC prone to climate-driven alteration given their strong seasonal nature. Hence, high-resolution long-term studies required assess potential interannual changes processes. In this study, we monitored at 30 min resolution from September 2018 December 2022 headwater peatland-influenced stream northern Finland (Pallas catchment, 68° N). Temporal variability was assessed using multiple methods: concentration–discharge (C–Q) slope for analysis, modified hysteresis index event yield random forest regression models determine hydroclimatic controls on transport. The findings revealed following distinct patterns: (a) C–Q relationship displayed trend, indicating increasing limitation each month after snowmelt began; (b) decreased post-snowmelt, signifying influence distal sources mobilization through slower pathways; (c) variations these metrics were generally low, often smaller than month-to-month fluctuations. These results highlight importance detailed monitoring enable separation inter- intra-annual better understand complexities This study contributes broader comprehension Arctic, specifically quantifying associated mechanistic drivers, which vital predicting how cycle likely change ecosystems.

Language: Английский

Citations

2
Effects of Nature-Based and Engineered Water Infrastructure Development on Water Balance in Agricultural Landscapes – an Historical Example from Temperate Sweden DOI
Louise Malmquist, Jennie Barron

Published: Jan. 1, 2024

Study regionTidan catchment (649 km2 with 24% of agriculture) lies in south-western Sweden and represents the temperate boreal zone, natural anthropogenic drainage for agriculture. Catchment changes correspond to -15% agricultural land, 64% arable land tile drained since 1960s - 46% wetland area, + 25% lake area during study period.Study FocusThe objective was explore water balance flow storage landscape as cover, body agriculture evolved over 120 years 20th 21st centuries. We applied Soil Water Assessment Tool (SWAT+) on historical cover weather data together improved simulate flows landscapes. modelled four historic scenarios (1900-1910, 1955-1965, 2000-2010 2010-2020).New Hydrological Insights RegionOur results indicate significant (p < 0.05) mainly caused by changed climate, annual wateryield percolation (-1.5 +59.0 mm yr-1 wateryield, -1.6 16.8 percolation, per average difference year 1900-1910), actual evapotranspiration (year 40.7 +3.1 yr-1, ETa) compared 2010-2020.Suggesting potential careful development, yet more studies are needed response under probability new precipitation patterns extreme events.

Language: Английский

Citations

0
Seasonal and interannual Dissolved Organic Carbon transport process dynamics in a subarctic headwater catchment revealed by high-resolution measurements DOI Creative Commons
Danny Croghan, Pertti Ala‐aho, J. M. Welker

et al.

Published: Sept. 6, 2023

Abstract. Dissolved organic carbon (DOC) dynamics are evolving in the rapidly changing Arctic and a comprehensive understanding of controlling processes is urgently required. For example, transport governing DOC prone to climate driven alteration given their strong seasonal nature. Hence, high-resolution long-term studies required assess potential inter-annual changes processes. In this study, we monitored at 30-minute resolution from September 2018 December 2022 headwater peatland-influenced stream Northern Finland (Pallas catchment, 68° N). To multiple methods were used: concentration – discharge (C-Q) slope for analysis, modified hysteresis index event yield random forest regression models determine hydroclimatic controls on transport. The findings reveal following distinct patterns: (a) C-Q relationship displays trend, indicating increasing limitation each month after snowmelt begins; (b) decreases post-snowmelt, signifying influence distal sources mobilization through slower pathways; (c) interannual variations these metrics generally low, often smaller than month-to-month fluctuations. These results highlight importance detailed monitoring enable separation inter intra annual variability better understand complexities This study contributes broader comprehension because knowledge gained regarding dominant mechanisms vital evaluating how cycle will change future ecosystems.

Language: Английский

Citations

0
NHF 50 years DOI Creative Commons
Kolbjørn Engeland, Māris Kļaviņš, Harri Koivusalo

et al.

Hydrology Research, Journal Year: 2023, Volume and Issue: 54(9), P. iii - viii

Published: Sept. 1, 2023

The Nordic Association for Hydrology -NHF 1turned 50 years in 2020.The anniversary is celebrated by this special issue and was also marked at the Hydrological Conference (NHC) Tallin 2022.Since 1970, NHF has been an important hub hydrological community countries from 1996, three Baltic were included association.The roots of can be traced back to Sea conferences starting 1926 Conferences Hydrologists 1955.In 2020, association had more than 220 members including 13 institutional members.According statutes, purpose promote hydrology as a science, strive improved understanding hydrology, practical application methods within applied science national planning countries.NHF supports international cooperation hydrology.To fulfill purpose, two activities are organize publish scientific papers.NHF responsible NHC one owners Research.In editorial, we will briefly summarize history NHF, NHC, Research.This includes review papers that have perspective about research topics, opinion paper points topics coming years, summarizes Research its predecessor Hydrology, five reflect on countries.

Language: Английский

Citations

0
Comment on egusphere-2023-1986 DOI Creative Commons

Sean Carey

Published: Sept. 24, 2023

Abstract. Dissolved organic carbon (DOC) dynamics are evolving in the rapidly changing Arctic and a comprehensive understanding of controlling processes is urgently required. For example, transport governing DOC prone to climate driven alteration given their strong seasonal nature. Hence, high-resolution long-term studies required assess potential inter-annual changes processes. In this study, we monitored at 30-minute resolution from September 2018 December 2022 headwater peatland-influenced stream Northern Finland (Pallas catchment, 68° N). To multiple methods were used: concentration – discharge (C-Q) slope for analysis, modified hysteresis index event yield random forest regression models determine hydroclimatic controls on transport. The findings reveal following distinct patterns: (a) C-Q relationship displays trend, indicating increasing limitation each month after snowmelt begins; (b) decreases post-snowmelt, signifying influence distal sources mobilization through slower pathways; (c) interannual variations these metrics generally low, often smaller than month-to-month fluctuations. These results highlight importance detailed monitoring enable separation inter intra annual variability better understand complexities This study contributes broader comprehension because knowledge gained regarding dominant mechanisms vital evaluating how cycle will change future ecosystems.

Language: Английский

Citations

0
Reply on RC2 DOI Creative Commons
Danny Croghan

Published: Nov. 3, 2023

Abstract. Dissolved organic carbon (DOC) dynamics are evolving in the rapidly changing Arctic and a comprehensive understanding of controlling processes is urgently required. For example, transport governing DOC prone to climate driven alteration given their strong seasonal nature. Hence, high-resolution long-term studies required assess potential inter-annual changes processes. In this study, we monitored at 30-minute resolution from September 2018 December 2022 headwater peatland-influenced stream Northern Finland (Pallas catchment, 68° N). To multiple methods were used: concentration – discharge (C-Q) slope for analysis, modified hysteresis index event yield random forest regression models determine hydroclimatic controls on transport. The findings reveal following distinct patterns: (a) C-Q relationship displays trend, indicating increasing limitation each month after snowmelt begins; (b) decreases post-snowmelt, signifying influence distal sources mobilization through slower pathways; (c) interannual variations these metrics generally low, often smaller than month-to-month fluctuations. These results highlight importance detailed monitoring enable separation inter intra annual variability better understand complexities This study contributes broader comprehension because knowledge gained regarding dominant mechanisms vital evaluating how cycle will change future ecosystems.

Language: Английский

Citations

0
Reply on RC1 DOI Creative Commons
Danny Croghan

Published: Nov. 3, 2023

Abstract. Dissolved organic carbon (DOC) dynamics are evolving in the rapidly changing Arctic and a comprehensive understanding of controlling processes is urgently required. For example, transport governing DOC prone to climate driven alteration given their strong seasonal nature. Hence, high-resolution long-term studies required assess potential inter-annual changes processes. In this study, we monitored at 30-minute resolution from September 2018 December 2022 headwater peatland-influenced stream Northern Finland (Pallas catchment, 68° N). To multiple methods were used: concentration – discharge (C-Q) slope for analysis, modified hysteresis index event yield random forest regression models determine hydroclimatic controls on transport. The findings reveal following distinct patterns: (a) C-Q relationship displays trend, indicating increasing limitation each month after snowmelt begins; (b) decreases post-snowmelt, signifying influence distal sources mobilization through slower pathways; (c) interannual variations these metrics generally low, often smaller than month-to-month fluctuations. These results highlight importance detailed monitoring enable separation inter intra annual variability better understand complexities This study contributes broader comprehension because knowledge gained regarding dominant mechanisms vital evaluating how cycle will change future ecosystems.

Language: Английский

Citations

0