Historical Trends in Lake and River Ice Cover in the Northern Hemisphere

Magnuson, John J.; Robertson, Dale M.; Benson, Barbara J.; Wynne, Randolph H.; Livingstone, David M.; Arai, Tadashi; Assel, Raymond A.; Barry, Roger G.; Card, Virginia M.; Kuusisto, Esko; Granin, N. G.; Prowse, Terry D.; Stewart, Kenton M.; Vuglinski, Valery S.

doi:10.1126/science.289.5485.1743

Cited by 1,133 publications

(1,015 citation statements)

References 13 publications

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“…Ice-out dates have become earlier (p < 0.1) at 10 of 11 lakes with 101-150 years of data. These results are consistent with other lakes across the Northern Hemisphere (Magnuson et al, 2000). Ice-out dates have become earlier (p < 0.1) at 4 of 13 lakes with 100 years or less of data.…”

Section: Resultssupporting

confidence: 81%

“…Five lakes had more than 150 years of data and 16 had more than 100 years of data. More long-term data (greater than 100 years of record) were available for New England than has been previously reported for all of North America (Magnuson et al, 2000). Long-term lake ice-out data for many lakes in New England represent a unique hydroclimatic data set that is useful for regional climate modelling and continued monitoring of the geophysical response to regional climate change.…”

Section: Methodsmentioning

confidence: 92%

“…Ice-out dates correlate most strongly with air temperatures in the month or two before ice-out (Tramoni et al, 1985;Palecki and Barry, 1986;Robertson et al, 1992;Livingstone, 1997). Many studies in the last 15 years have used Northern Hemisphere lake ice-out dates as climatic indicators (Tramoni et al, 1985;Palecki and Barry, 1986;Rousteenoja, 1986;Robertson et al, 1992;Assel and Robertson, 1995;Anderson et al, 1996;Livingstone, 1997;Magnuson et al, 2000). In Northern Hemisphere mid-latitude areas such as New England, ice-out dates can serve as useful indicators of late winter and early spring climate change.…”

Section: Introductionmentioning

confidence: 99%

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Historical changes in lake ice‐out dates as indicators of climate change in New England, 1850–2000

Hodgkins,

James,

Huntington

2002

Intl Journal of Climatology

125

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Various studies have shown that changes over time in spring ice-out dates can be used as indicators of climate change. Ice-out dates from 29 lakes in New England (USA) with 64 to 163 years of record were assembled and analysed for this study. Ice-out dates have become significantly earlier in New England since the 1800s. Changes in ice-out dates between 1850 and 2000 were 9 days and 16 days in the northern/mountainous and southern regions of New England respectively. The changes in the ice-out data over time were very consistent within each of the two regions of New England, and more consistent than four air-temperature records in each region. The ice-out dates of the two regions had a different response to changes in air temperature. The inferred late winter-early spring air-temperature warming in both regions of New England since 1850, based on linear regression analysis, was about 1.5°C. Published in

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Section: Resultssupporting

confidence: 81%

Section: Methodsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Historical changes in lake ice‐out dates as indicators of climate change in New England, 1850–2000

Hodgkins,

James,

Huntington

2002

Intl Journal of Climatology

125

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“…Simulation studies assuming a doubling of carbon dioxide relative to present day values suggest that ice cover in Finnish lakes will melt 1-2 months earlier than in the present climate (Huttula et al 1992), and a recent analysis of long time series of freeze and break-up dates provides evidence that the shortening of the duration of ice cover in lakes and rivers in the Northern Hemisphere is already in action (Magnuson et al 2000).…”

Section: Uv-induced Pigmentation In Subarctic Daphniamentioning

confidence: 99%

UV‐induced pigmentation in subarctic Daphnia

Rautio

Korhola

2002

Limnology & Oceanography

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The distribution of the planktonic crustacean Daphnia and the occurrence of ultraviolet (UV)‐protective melanin pigmentation in its body wall were studied in relation to the UV transparency in subarctic ponds and lakes in Finnish Lapland. In shallow ponds, Daphnia only occurred in those with sufficient amounts of UV‐screening dissolved organic matter. The highest pigment concentration was found in these Daphnia and in populations that occurred in lakes with low organic carbon content (<2 mg L−1). Pigment synthesis was extremely low during the long winter and peaked immediately after the ice break‐up at the time of the maximum underwater UV intensity. We propose that the predicted increase in UV irradiance from ozone depletion in the Northern Hemisphere spring, along with the earlier ice break‐up associated with Arctic warming may favor the survival of those organisms with the ability to produce UV photoprotective pigments.

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“…Investigations of river regimes in high-latitude countries including Canada, the United States, Russia, Sweden and Finland have a long history related to their ice monitoring (Lenormand et al, 2002). This is important as ice freeze-up and break-up records serve as climate proxies responding to changing air temperature patterns (Magnuson et al, 2000). The ice break-up process is nonetheless under-monitored.…”

Section: Introductionmentioning

confidence: 99%

Monitoring ice break-up on the Mackenzie River using MODIS data

2016

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Abstract. The aim of this study was to develop an approach for estimating ice break-up dates on the Mackenzie River (MR) using more than a decade of MODIS Level 3 500 m snow products (MOD/MYD10A1), complemented with 250 m Level 1B radiance products (MOD/MYD02QKM) from the Terra and Aqua satellite platforms.The analysis showed break-up began on average between days of year (DOYs) 115 and 125 and ended between DOYs 145 and 155 over 13 ice seasons (2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013), resulting in an average melt duration of ca. 30-40 days. Thermal processes were more important in driving ice break-up south of the MR confluence with the Liard River, while dynamically driven break-up was more important north of the Liard.A comparison of the timing of ice disappearance with snow disappearance from surrounding land areas of the MR with MODIS Level 3 snow products showed varying relationships along the river. Ice-off and snow-off timing were in sync north of the MR-Liard River confluence and over sections of the MR before it enters the Mackenzie Delta, but ice disappeared much later than snow on land in regions where thermal ice break-up processes dominated.MODIS observations revealed that channel morphology is a more important control of ice break-up patterns than previously believed with ice runs on the MR strongly influenced by channel morphology (islands and bars, confluences and channel constriction).Ice velocity estimates from feature tracking were able to be made in 2008 and 2010 and yielded 3-4-day average ice velocities of 1.21 and 1.84 m s −1 respectively, which is in agreement with estimates from previous studies.These preliminary results confirm the utility of daily MODIS data for monitoring ice break-up processes along the Mackenzie River. The addition of optical and synthetic aperture radar data from recent and upcoming satellite missions (e.g. Sentinel-1/2/3 and RADARSAT Constellation) would improve the monitoring of ice break-up in narrower sections of the MR.

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Historical Trends in Lake and River Ice Cover in the Northern Hemisphere

Cited by 1,133 publications

References 13 publications

Historical changes in lake ice‐out dates as indicators of climate change in New England, 1850–2000

Historical changes in lake ice‐out dates as indicators of climate change in New England, 1850–2000

UV‐induced pigmentation in subarctic Daphnia

Monitoring ice break-up on the Mackenzie River using MODIS data

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