Monitoring changes in forestry and seasonal snow using surface albedo during 1982-2016 as an indicator
Short summary The surface albedo time series CLARA-A2 SAL was used to study trends in the timing of the melting season of snow and preceding albedo value in Finland during 1982–2016 to assess climate change. The results were in line with operational snow depth data, JSBACH land ecosystem model, SYKE...
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Language: | English |
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Copernicus
2022
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Online Access: | http://hdl.handle.net/10138/346790 |
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/346790 2024-09-09T19:49:39+00:00 Monitoring changes in forestry and seasonal snow using surface albedo during 1982-2016 as an indicator Manninen, Terhikki Aalto, Tuula Markkanen, Tiina Peltoniemi, Mikko Böttcher, Kristin Metsämäki, Sari Anttila, Kati Pirinen, Pentti Leppänen, Antti Arslan, Ali Nadir 2022-08-09T15:23:49Z application/pdf http://hdl.handle.net/10138/346790 eng eng Copernicus Biogeosciences https://doi.org/10.5194/bg-16-223-2019 1726-4170 Manninen, T., Aalto, T., Markkanen, T., Peltoniemi, M., Böttcher, K., Metsämäki, S., Anttila, K., Pirinen, P., Leppänen, A., and Arslan, A. N.: Monitoring changes in forestry and seasonal snow using surface albedo during 1982–2016 as an indicator, Biogeosciences, 16, 223–240. https://doi.org/10.5194/bg-16-223-2019 http://hdl.handle.net/10138/346790 Suomen ympäristökeskus CC BY 4.0 openAccess model computations bias correction time-series boreal zone climate cover vegetation impact growth performance snow snow cover melting trends Finland lumi lumipeite sulaminen aikasarjat trendit mallit kasvillisuus ilmasto boreaalinen vyöhyke Suomi Article 2022 ftunivhelsihelda https://doi.org/10.5194/bg-16-223-2019 2024-07-31T23:42:49Z Short summary The surface albedo time series CLARA-A2 SAL was used to study trends in the timing of the melting season of snow and preceding albedo value in Finland during 1982–2016 to assess climate change. The results were in line with operational snow depth data, JSBACH land ecosystem model, SYKE fractional snow cover and greening-up data. In the north a clear trend to earlier snowmelt onset, increasing melting season length, and decrease in pre-melt albedo (related to increased stem volume) was observed. The surface albedo time series, CLARA-A2 SAL, was used to study trends in the snowmelt start and end dates, the melting season length and the albedo value preceding the melt onset in Finland during 1982–2016. In addition, the melt onset from the JSBACH land surface model was compared with the timing of green-up estimated from Moderate Resolution Imaging Spectroradiometer (MODIS) data. Moreover, the melt onset was compared with the timing of the greening up based on MODIS data. Similarly, the end of snowmelt timing predicted by JSBACH was compared with the melt-off dates based on the Finnish Meteorological Institute (FMI) operational in situ measurements and the Fractional Snow Cover (FSC) time-series product provided by the EU FP7 CryoLand project. It was found that the snowmelt date estimated using the 20 % threshold of the albedo range during the melting period corresponded well to the melt estimate of the permanent snow layer. The longest period, during which the ground is continuously half or more covered by snow, defines the permanent snow layer (Solantie et al., 1996). The greening up followed within 5–13 days the date when the albedo reached the 1 % threshold of the albedo dynamic range during the melting period. The time difference between greening up and complete snowmelt was smaller in mountainous areas than in coastal areas. In two northern vegetation map areas (Northern Karelia–Kainuu and Southwestern Lapland), a clear trend towards earlier snowmelt onset (5–6 days per decade) and increasing ... Article in Journal/Newspaper karelia* Lapland HELDA – University of Helsinki Open Repository Kainuu ENVELOPE(28.000,28.000,66.000,66.000) Biogeosciences 16 2 223 240 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
model computations bias correction time-series boreal zone climate cover vegetation impact growth performance snow snow cover melting trends Finland lumi lumipeite sulaminen aikasarjat trendit mallit kasvillisuus ilmasto boreaalinen vyöhyke Suomi |
spellingShingle |
model computations bias correction time-series boreal zone climate cover vegetation impact growth performance snow snow cover melting trends Finland lumi lumipeite sulaminen aikasarjat trendit mallit kasvillisuus ilmasto boreaalinen vyöhyke Suomi Manninen, Terhikki Aalto, Tuula Markkanen, Tiina Peltoniemi, Mikko Böttcher, Kristin Metsämäki, Sari Anttila, Kati Pirinen, Pentti Leppänen, Antti Arslan, Ali Nadir Monitoring changes in forestry and seasonal snow using surface albedo during 1982-2016 as an indicator |
topic_facet |
model computations bias correction time-series boreal zone climate cover vegetation impact growth performance snow snow cover melting trends Finland lumi lumipeite sulaminen aikasarjat trendit mallit kasvillisuus ilmasto boreaalinen vyöhyke Suomi |
description |
Short summary The surface albedo time series CLARA-A2 SAL was used to study trends in the timing of the melting season of snow and preceding albedo value in Finland during 1982–2016 to assess climate change. The results were in line with operational snow depth data, JSBACH land ecosystem model, SYKE fractional snow cover and greening-up data. In the north a clear trend to earlier snowmelt onset, increasing melting season length, and decrease in pre-melt albedo (related to increased stem volume) was observed. The surface albedo time series, CLARA-A2 SAL, was used to study trends in the snowmelt start and end dates, the melting season length and the albedo value preceding the melt onset in Finland during 1982–2016. In addition, the melt onset from the JSBACH land surface model was compared with the timing of green-up estimated from Moderate Resolution Imaging Spectroradiometer (MODIS) data. Moreover, the melt onset was compared with the timing of the greening up based on MODIS data. Similarly, the end of snowmelt timing predicted by JSBACH was compared with the melt-off dates based on the Finnish Meteorological Institute (FMI) operational in situ measurements and the Fractional Snow Cover (FSC) time-series product provided by the EU FP7 CryoLand project. It was found that the snowmelt date estimated using the 20 % threshold of the albedo range during the melting period corresponded well to the melt estimate of the permanent snow layer. The longest period, during which the ground is continuously half or more covered by snow, defines the permanent snow layer (Solantie et al., 1996). The greening up followed within 5–13 days the date when the albedo reached the 1 % threshold of the albedo dynamic range during the melting period. The time difference between greening up and complete snowmelt was smaller in mountainous areas than in coastal areas. In two northern vegetation map areas (Northern Karelia–Kainuu and Southwestern Lapland), a clear trend towards earlier snowmelt onset (5–6 days per decade) and increasing ... |
format |
Article in Journal/Newspaper |
author |
Manninen, Terhikki Aalto, Tuula Markkanen, Tiina Peltoniemi, Mikko Böttcher, Kristin Metsämäki, Sari Anttila, Kati Pirinen, Pentti Leppänen, Antti Arslan, Ali Nadir |
author_facet |
Manninen, Terhikki Aalto, Tuula Markkanen, Tiina Peltoniemi, Mikko Böttcher, Kristin Metsämäki, Sari Anttila, Kati Pirinen, Pentti Leppänen, Antti Arslan, Ali Nadir |
author_sort |
Manninen, Terhikki |
title |
Monitoring changes in forestry and seasonal snow using surface albedo during 1982-2016 as an indicator |
title_short |
Monitoring changes in forestry and seasonal snow using surface albedo during 1982-2016 as an indicator |
title_full |
Monitoring changes in forestry and seasonal snow using surface albedo during 1982-2016 as an indicator |
title_fullStr |
Monitoring changes in forestry and seasonal snow using surface albedo during 1982-2016 as an indicator |
title_full_unstemmed |
Monitoring changes in forestry and seasonal snow using surface albedo during 1982-2016 as an indicator |
title_sort |
monitoring changes in forestry and seasonal snow using surface albedo during 1982-2016 as an indicator |
publisher |
Copernicus |
publishDate |
2022 |
url |
http://hdl.handle.net/10138/346790 |
long_lat |
ENVELOPE(28.000,28.000,66.000,66.000) |
geographic |
Kainuu |
geographic_facet |
Kainuu |
genre |
karelia* Lapland |
genre_facet |
karelia* Lapland |
op_relation |
Biogeosciences https://doi.org/10.5194/bg-16-223-2019 1726-4170 Manninen, T., Aalto, T., Markkanen, T., Peltoniemi, M., Böttcher, K., Metsämäki, S., Anttila, K., Pirinen, P., Leppänen, A., and Arslan, A. N.: Monitoring changes in forestry and seasonal snow using surface albedo during 1982–2016 as an indicator, Biogeosciences, 16, 223–240. https://doi.org/10.5194/bg-16-223-2019 http://hdl.handle.net/10138/346790 Suomen ympäristökeskus |
op_rights |
CC BY 4.0 openAccess |
op_doi |
https://doi.org/10.5194/bg-16-223-2019 |
container_title |
Biogeosciences |
container_volume |
16 |
container_issue |
2 |
container_start_page |
223 |
op_container_end_page |
240 |
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1809919055308521472 |