Characteristics of Arctic tides at CANDAC-PEARL (80 degrees N, 86 degrees W) and Svalbard (78 degrees N, 16 degrees E) for 2006-2009 : radar observations and comparisons with the model CMAM-DAS
Operation of a Meteor Radar (MWR) at Eureka, Ellesmere Island (80° N, 86° W) began in February 2006: this is the location of the Polar Environmental and Atmospheric Research Laboratory (PEARL), operated by the "Canadian Network for the Detection of Atmospheric Change" (CANDAC). The first 3...
Published in: | Annales Geophysicae |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus
2011
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/3943 https://doi.org/10.5194/angeo-29-1939-2011 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/3943 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450::Meteorology: 453 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Meteorologi: 453 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450::Meteorology: 453 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Meteorologi: 453 Manson, Alan Meek, Chris Xu, X. Aso, Takehiko Drummond, J. R. Hall, Chris Hocking, W. K. Tsutsumi, Masaki Ward, W. E. Characteristics of Arctic tides at CANDAC-PEARL (80 degrees N, 86 degrees W) and Svalbard (78 degrees N, 16 degrees E) for 2006-2009 : radar observations and comparisons with the model CMAM-DAS |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450::Meteorology: 453 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Meteorologi: 453 |
description |
Operation of a Meteor Radar (MWR) at Eureka, Ellesmere Island (80° N, 86° W) began in February 2006: this is the location of the Polar Environmental and Atmospheric Research Laboratory (PEARL), operated by the "Canadian Network for the Detection of Atmospheric Change" (CANDAC). The first 36 months of tidal wind data (82–97 km) are here combined with contemporaneous tides from the Meteor Radar (MWR) at Adventdalen, Svalbard (78° N, 16° E), to provide the first significant evidence for interannual variability (IAV) of the High Arctic's diurnal and semidiurnal migrating (MT) and non-migrating tides (NMT). The three-year monthly means for both diurnal (DT) and semi-diurnal (SDT) winds demonstrate significantly different amplitudes and phases at Eureka and Svalbard. Typically the summer-maximizing DT is much larger (~24 m s−1 at 97 km) at Eureka, while the Svalbard tide (5–24 m s−1 at 97 km)) is almost linear (north-south) rather than circular. Interannual variations are smallest in the summer and autumn months. The High Arctic SDT has maxima centred on August/September, followed in size by the winter features; and is much larger at Svalbard (24 m s−1 at 97 km, versus 14–18 m s−1 in central Canada). Depending on the location, the IAV are largest in spring/winter (Eureka) and summer/autumn (Svalbard). Fitting of wave-numbers for the migrating and non-migrating tides (MT, NMT) determines dominant tides for each month and height. Existence of NMT is consistent with nonlinear interactions between migrating tides and (quasi) stationary planetary wave (SPW) S=1 (SPW1). For the diurnal oscillation, NMT s=0 for the east-west (EW) wind component dominates (largest tide) in the late autumn and winter (November–February); and s=+2 is frequently seen in the north-south (NS) wind component for the same months. The semi-diurnal oscillation's NMT s=+1 dominates from March to June/July. There are patches of s=+3 and +1, in the late fall-winter. These wave numbers are also consistent with SPW1-MT interactions. Comparisons for 2007 of the observed DT and SDT at 78–80° N, with those within the Canadian Middle Atmosphere Model Data Assimilation System CMAM-DAS, are a major feature of this paper. The diurnal tides for the two locations have important similarities as observed and modeled, with seasonal maxima in the mesosphere from April to October, and similar phases with long/evanescent wavelengths. However, differences are also significant: observed Eureka amplitudes are generally larger than the model; and at Svalbard the modeled tide is classically circular, rather than anomalous. For the semi-diurnal tide, the amplitudes and phases differ markedly between Eureka and Svalbard for both MWR-radar data and CMAM-DAS data. The seasonal variations from observed and modeled archives also differ at each location. Tidal NMT-amplitudes and wave-numbers for the model differ substantially from observations. |
format |
Article in Journal/Newspaper |
author |
Manson, Alan Meek, Chris Xu, X. Aso, Takehiko Drummond, J. R. Hall, Chris Hocking, W. K. Tsutsumi, Masaki Ward, W. E. |
author_facet |
Manson, Alan Meek, Chris Xu, X. Aso, Takehiko Drummond, J. R. Hall, Chris Hocking, W. K. Tsutsumi, Masaki Ward, W. E. |
author_sort |
Manson, Alan |
title |
Characteristics of Arctic tides at CANDAC-PEARL (80 degrees N, 86 degrees W) and Svalbard (78 degrees N, 16 degrees E) for 2006-2009 : radar observations and comparisons with the model CMAM-DAS |
title_short |
Characteristics of Arctic tides at CANDAC-PEARL (80 degrees N, 86 degrees W) and Svalbard (78 degrees N, 16 degrees E) for 2006-2009 : radar observations and comparisons with the model CMAM-DAS |
title_full |
Characteristics of Arctic tides at CANDAC-PEARL (80 degrees N, 86 degrees W) and Svalbard (78 degrees N, 16 degrees E) for 2006-2009 : radar observations and comparisons with the model CMAM-DAS |
title_fullStr |
Characteristics of Arctic tides at CANDAC-PEARL (80 degrees N, 86 degrees W) and Svalbard (78 degrees N, 16 degrees E) for 2006-2009 : radar observations and comparisons with the model CMAM-DAS |
title_full_unstemmed |
Characteristics of Arctic tides at CANDAC-PEARL (80 degrees N, 86 degrees W) and Svalbard (78 degrees N, 16 degrees E) for 2006-2009 : radar observations and comparisons with the model CMAM-DAS |
title_sort |
characteristics of arctic tides at candac-pearl (80 degrees n, 86 degrees w) and svalbard (78 degrees n, 16 degrees e) for 2006-2009 : radar observations and comparisons with the model cmam-das |
publisher |
Copernicus |
publishDate |
2011 |
url |
https://hdl.handle.net/10037/3943 https://doi.org/10.5194/angeo-29-1939-2011 |
long_lat |
ENVELOPE(16.264,16.264,78.181,78.181) ENVELOPE(-85.940,-85.940,79.990,79.990) |
geographic |
Adventdalen Arctic Canada Ellesmere Island Eureka Svalbard |
geographic_facet |
Adventdalen Arctic Canada Ellesmere Island Eureka Svalbard |
genre |
Adventdalen Arctic Ellesmere Island Svalbard |
genre_facet |
Adventdalen Arctic Ellesmere Island Svalbard |
op_relation |
Annales Geophysicae 29(2011) nr. 10 s. 1939-1954 FRIDAID 850829 doi:10.5194/angeo-29-1939-2011 0992-7689 https://hdl.handle.net/10037/3943 URN:NBN:no-uit_munin_3665 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.5194/angeo-29-1939-2011 |
container_title |
Annales Geophysicae |
container_volume |
29 |
container_issue |
10 |
container_start_page |
1939 |
op_container_end_page |
1954 |
_version_ |
1766394787553869824 |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/3943 2023-05-15T13:05:49+02:00 Characteristics of Arctic tides at CANDAC-PEARL (80 degrees N, 86 degrees W) and Svalbard (78 degrees N, 16 degrees E) for 2006-2009 : radar observations and comparisons with the model CMAM-DAS Manson, Alan Meek, Chris Xu, X. Aso, Takehiko Drummond, J. R. Hall, Chris Hocking, W. K. Tsutsumi, Masaki Ward, W. E. 2011 https://hdl.handle.net/10037/3943 https://doi.org/10.5194/angeo-29-1939-2011 eng eng Copernicus Annales Geophysicae 29(2011) nr. 10 s. 1939-1954 FRIDAID 850829 doi:10.5194/angeo-29-1939-2011 0992-7689 https://hdl.handle.net/10037/3943 URN:NBN:no-uit_munin_3665 openAccess VDP::Mathematics and natural science: 400::Geosciences: 450::Meteorology: 453 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Meteorologi: 453 Journal article Tidsskriftartikkel Peer reviewed 2011 ftunivtroemsoe https://doi.org/10.5194/angeo-29-1939-2011 2021-06-25T17:53:11Z Operation of a Meteor Radar (MWR) at Eureka, Ellesmere Island (80° N, 86° W) began in February 2006: this is the location of the Polar Environmental and Atmospheric Research Laboratory (PEARL), operated by the "Canadian Network for the Detection of Atmospheric Change" (CANDAC). The first 36 months of tidal wind data (82–97 km) are here combined with contemporaneous tides from the Meteor Radar (MWR) at Adventdalen, Svalbard (78° N, 16° E), to provide the first significant evidence for interannual variability (IAV) of the High Arctic's diurnal and semidiurnal migrating (MT) and non-migrating tides (NMT). The three-year monthly means for both diurnal (DT) and semi-diurnal (SDT) winds demonstrate significantly different amplitudes and phases at Eureka and Svalbard. Typically the summer-maximizing DT is much larger (~24 m s−1 at 97 km) at Eureka, while the Svalbard tide (5–24 m s−1 at 97 km)) is almost linear (north-south) rather than circular. Interannual variations are smallest in the summer and autumn months. The High Arctic SDT has maxima centred on August/September, followed in size by the winter features; and is much larger at Svalbard (24 m s−1 at 97 km, versus 14–18 m s−1 in central Canada). Depending on the location, the IAV are largest in spring/winter (Eureka) and summer/autumn (Svalbard). Fitting of wave-numbers for the migrating and non-migrating tides (MT, NMT) determines dominant tides for each month and height. Existence of NMT is consistent with nonlinear interactions between migrating tides and (quasi) stationary planetary wave (SPW) S=1 (SPW1). For the diurnal oscillation, NMT s=0 for the east-west (EW) wind component dominates (largest tide) in the late autumn and winter (November–February); and s=+2 is frequently seen in the north-south (NS) wind component for the same months. The semi-diurnal oscillation's NMT s=+1 dominates from March to June/July. There are patches of s=+3 and +1, in the late fall-winter. These wave numbers are also consistent with SPW1-MT interactions. Comparisons for 2007 of the observed DT and SDT at 78–80° N, with those within the Canadian Middle Atmosphere Model Data Assimilation System CMAM-DAS, are a major feature of this paper. The diurnal tides for the two locations have important similarities as observed and modeled, with seasonal maxima in the mesosphere from April to October, and similar phases with long/evanescent wavelengths. However, differences are also significant: observed Eureka amplitudes are generally larger than the model; and at Svalbard the modeled tide is classically circular, rather than anomalous. For the semi-diurnal tide, the amplitudes and phases differ markedly between Eureka and Svalbard for both MWR-radar data and CMAM-DAS data. The seasonal variations from observed and modeled archives also differ at each location. Tidal NMT-amplitudes and wave-numbers for the model differ substantially from observations. Article in Journal/Newspaper Adventdalen Arctic Ellesmere Island Svalbard University of Tromsø: Munin Open Research Archive Adventdalen ENVELOPE(16.264,16.264,78.181,78.181) Arctic Canada Ellesmere Island Eureka ENVELOPE(-85.940,-85.940,79.990,79.990) Svalbard Annales Geophysicae 29 10 1939 1954 |