Adaptation of the Integrated Nitrogen Model for Catchments (INCA) to seasonally snow-covered catchments
International audience Testing of the Integrated Nitrogen model for Catchments (INCA) in a wide range of ecosystem types across Europe has shown that the model underestimates N transformation processes to a large extent in northern catchments of Finland and Norway in winter and spring. It is found,...
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ftccsdartic:oai:HAL:hal-00304955v1 2023-11-12T04:23:16+01:00 Adaptation of the Integrated Nitrogen Model for Catchments (INCA) to seasonally snow-covered catchments Rankinen, K. Kaste, Ø. Butterfield, D. Finnnish Environment Institute Norwegian Institute for Water Research (NIVA) Aquatic Environments Research Centre Department of geography 2004 https://hal.science/hal-00304955 https://hal.science/hal-00304955/document https://hal.science/hal-00304955/file/hess-8-695-2004.pdf en eng HAL CCSD European Geosciences Union hal-00304955 https://hal.science/hal-00304955 https://hal.science/hal-00304955/document https://hal.science/hal-00304955/file/hess-8-695-2004.pdf info:eu-repo/semantics/OpenAccess ISSN: 1812-2108 EISSN: 1812-2116 Hydrology and Earth System Sciences Discussions https://hal.science/hal-00304955 Hydrology and Earth System Sciences Discussions, 2004, 8 (4), pp.695-705 [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2004 ftccsdartic 2023-10-21T23:10:33Z International audience Testing of the Integrated Nitrogen model for Catchments (INCA) in a wide range of ecosystem types across Europe has shown that the model underestimates N transformation processes to a large extent in northern catchments of Finland and Norway in winter and spring. It is found, and generally assumed, that microbial activity in soils proceeds at low rates at northern latitudes during winter, even at sub-zero temperatures. The INCA model was modified to improve the simulation of N transformation rates in northern catchments, characterised by cold climates and extensive snow accumulation and insulation in winter, by introducing an empirical function to simulate soil temperatures below the seasonal snow pack, and a degree-day model to calculate the depth of the snow pack. The proposed snow-correction factor improved the simulation of soil temperatures at Finnish and Norwegian field sites in winter, although soil temperature was still underestimated during periods with a thin snow cover. Finally, a comparison between the modified INCA version (v.1.7) and the former version (v.1.6) was made at the Simojoki river basin in northern Finland and at Dalelva Brook in northern Norway. The new modules did not imply any significant changes in simulated NO 3 - concentration levels in the streams but improved the timing of simulated higher concentrations. The inclusion of a modified temperature response function and an empirical snow-correction factor improved the flexibility and applicability of the model for climate effect studies. Keywords: inorganic N leaching, degree-day snow model, snow pack, catchment scale model Article in Journal/Newspaper Northern Finland Northern Norway Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Inca ENVELOPE(-59.194,-59.194,-62.308,-62.308) Norway Simojoki ENVELOPE(25.050,25.050,65.617,65.617) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Rankinen, K. Kaste, Ø. Butterfield, D. Adaptation of the Integrated Nitrogen Model for Catchments (INCA) to seasonally snow-covered catchments |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience Testing of the Integrated Nitrogen model for Catchments (INCA) in a wide range of ecosystem types across Europe has shown that the model underestimates N transformation processes to a large extent in northern catchments of Finland and Norway in winter and spring. It is found, and generally assumed, that microbial activity in soils proceeds at low rates at northern latitudes during winter, even at sub-zero temperatures. The INCA model was modified to improve the simulation of N transformation rates in northern catchments, characterised by cold climates and extensive snow accumulation and insulation in winter, by introducing an empirical function to simulate soil temperatures below the seasonal snow pack, and a degree-day model to calculate the depth of the snow pack. The proposed snow-correction factor improved the simulation of soil temperatures at Finnish and Norwegian field sites in winter, although soil temperature was still underestimated during periods with a thin snow cover. Finally, a comparison between the modified INCA version (v.1.7) and the former version (v.1.6) was made at the Simojoki river basin in northern Finland and at Dalelva Brook in northern Norway. The new modules did not imply any significant changes in simulated NO 3 - concentration levels in the streams but improved the timing of simulated higher concentrations. The inclusion of a modified temperature response function and an empirical snow-correction factor improved the flexibility and applicability of the model for climate effect studies. Keywords: inorganic N leaching, degree-day snow model, snow pack, catchment scale model |
author2 |
Finnnish Environment Institute Norwegian Institute for Water Research (NIVA) Aquatic Environments Research Centre Department of geography |
format |
Article in Journal/Newspaper |
author |
Rankinen, K. Kaste, Ø. Butterfield, D. |
author_facet |
Rankinen, K. Kaste, Ø. Butterfield, D. |
author_sort |
Rankinen, K. |
title |
Adaptation of the Integrated Nitrogen Model for Catchments (INCA) to seasonally snow-covered catchments |
title_short |
Adaptation of the Integrated Nitrogen Model for Catchments (INCA) to seasonally snow-covered catchments |
title_full |
Adaptation of the Integrated Nitrogen Model for Catchments (INCA) to seasonally snow-covered catchments |
title_fullStr |
Adaptation of the Integrated Nitrogen Model for Catchments (INCA) to seasonally snow-covered catchments |
title_full_unstemmed |
Adaptation of the Integrated Nitrogen Model for Catchments (INCA) to seasonally snow-covered catchments |
title_sort |
adaptation of the integrated nitrogen model for catchments (inca) to seasonally snow-covered catchments |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.science/hal-00304955 https://hal.science/hal-00304955/document https://hal.science/hal-00304955/file/hess-8-695-2004.pdf |
long_lat |
ENVELOPE(-59.194,-59.194,-62.308,-62.308) ENVELOPE(25.050,25.050,65.617,65.617) |
geographic |
Inca Norway Simojoki |
geographic_facet |
Inca Norway Simojoki |
genre |
Northern Finland Northern Norway |
genre_facet |
Northern Finland Northern Norway |
op_source |
ISSN: 1812-2108 EISSN: 1812-2116 Hydrology and Earth System Sciences Discussions https://hal.science/hal-00304955 Hydrology and Earth System Sciences Discussions, 2004, 8 (4), pp.695-705 |
op_relation |
hal-00304955 https://hal.science/hal-00304955 https://hal.science/hal-00304955/document https://hal.science/hal-00304955/file/hess-8-695-2004.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782338090144104448 |