Loading…

Variations of the nighttime thermospheric mass density at low and middle latitudes

The latitudinal structure of the nighttime thermospheric mass density at 385 km has been investigated using observations made by the accelerometer onboard the CHAMP satellite between 2002 and 2007. The nighttime thermospheric mass density had a clear latitudinal variation. There was a local density...

Full description

Saved in:
Bibliographic Details
Published in:Journal of Geophysical Research: Space Physics 2010-12, Vol.115 (A12), p.n/a
Main Authors: Ma, Ruiping, Xu, Jiyao, Wang, Wenbin, Lei, Jiuhou, Liu, Han-Li, Maute, Astrid, Hagan, Maura E.
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
cited_by cdi_FETCH-LOGICAL-c4127-94b2441561fe1886a151301ae7bb5bfc0e05e582012c5f86e85a1364a13b9a833
cites cdi_FETCH-LOGICAL-c4127-94b2441561fe1886a151301ae7bb5bfc0e05e582012c5f86e85a1364a13b9a833
container_end_page n/a
container_issue A12
container_start_page
container_title Journal of Geophysical Research: Space Physics
container_volume 115
creator Ma, Ruiping
Xu, Jiyao
Wang, Wenbin
Lei, Jiuhou
Liu, Han-Li
Maute, Astrid
Hagan, Maura E.
description The latitudinal structure of the nighttime thermospheric mass density at 385 km has been investigated using observations made by the accelerometer onboard the CHAMP satellite between 2002 and 2007. The nighttime thermospheric mass density had a clear latitudinal variation. There was a local density peak around the geographic equator and two minima at about ±30°. This nighttime equatorial mass anomaly (NEMA) was opposite to the latitudinal variations of the daytime ionospheric equatorial anomaly and thermospheric mass density anomaly as both have minima at the magnetic dip equator and maxima around ±20° in magnetic latitudes. This anomalous behavior of the nighttime thermospheric mass density had strong local time, seasonal, hemispheric, and solar cycle dependences. The largest crest‐to‐trough ratio between the peak density at the equator and the minima at the anomaly latitudes (±30°) occurred between 0000 and 0200 local time. The NEMA appeared to be more pronounced during solstice seasons. It was also stronger during solar minimum than during solar maximum. In addition, under the same geophysical conditions, the empirical NRLMSISE‐00 model shows similar but much weaker nighttime mass density anomaly features at low and middle latitudes. A high‐resolution National Center for Atmospheric Research‐Thermosphere Ionosphere Mesosphere Energetics Global Circulation Model (TIMEGCM) simulation reproduced most of the observed latitudinal variations of the nighttime mass density as well as the thermospheric midnight temperature maximum (MTM). Model results suggest that superposition of diurnal and semidiurnal migrating tides of modes up to wave number 6 is the likely cause of both the NEMA and MTM phenomena.
doi_str_mv 10.1029/2010JA015784
format article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_916574477</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2563599211</sourcerecordid><originalsourceid>FETCH-LOGICAL-c4127-94b2441561fe1886a151301ae7bb5bfc0e05e582012c5f86e85a1364a13b9a833</originalsourceid><addsrcrecordid>eNp9kMtKAzEYhYMoWLQ7HyAI7hzNdZIua9HW0iqU2i5DZiZjo3OpSUrt25vSIq4MIYfAd85_AeAKozuMSO-eIIzGfYS5kOwEdAjmaUIIIqeggzCTCSJEnIOu9x8oHsZThnAHzBbaWR1s23jYljCsDGzs-yoEW5v9z9WtX0exOay197AwjbdhB3WAVbuFuilgbYuiMrCKKWFTGH8JzkpdedM96gV4e3qcD0bJ5HX4POhPkpxhIpIeywhjsUtcGixlqjHHFGFtRJbxrMyRQdxwGcciOS9laiTXmKYsPllPS0ovwPUhd-3ar43xQX20G9fEkqqHUy4YEyJCtwcod633zpRq7Wyt3U5hpPZ7U3_3FvGbY6b2ua5Kp5vc-l8PoTJemkaOHritrczu30w1Hs76BEmybyY5uKwP5vvXpd2nSgUVXC1fhopM59OHxWipJvQHRg6JRw</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>916574477</pqid></control><display><type>article</type><title>Variations of the nighttime thermospheric mass density at low and middle latitudes</title><source>Wiley-Blackwell Read &amp; Publish Collection</source><source>Wiley-Blackwell AGU Digital Archive</source><creator>Ma, Ruiping ; Xu, Jiyao ; Wang, Wenbin ; Lei, Jiuhou ; Liu, Han-Li ; Maute, Astrid ; Hagan, Maura E.</creator><creatorcontrib>Ma, Ruiping ; Xu, Jiyao ; Wang, Wenbin ; Lei, Jiuhou ; Liu, Han-Li ; Maute, Astrid ; Hagan, Maura E.</creatorcontrib><description>The latitudinal structure of the nighttime thermospheric mass density at 385 km has been investigated using observations made by the accelerometer onboard the CHAMP satellite between 2002 and 2007. The nighttime thermospheric mass density had a clear latitudinal variation. There was a local density peak around the geographic equator and two minima at about ±30°. This nighttime equatorial mass anomaly (NEMA) was opposite to the latitudinal variations of the daytime ionospheric equatorial anomaly and thermospheric mass density anomaly as both have minima at the magnetic dip equator and maxima around ±20° in magnetic latitudes. This anomalous behavior of the nighttime thermospheric mass density had strong local time, seasonal, hemispheric, and solar cycle dependences. The largest crest‐to‐trough ratio between the peak density at the equator and the minima at the anomaly latitudes (±30°) occurred between 0000 and 0200 local time. The NEMA appeared to be more pronounced during solstice seasons. It was also stronger during solar minimum than during solar maximum. In addition, under the same geophysical conditions, the empirical NRLMSISE‐00 model shows similar but much weaker nighttime mass density anomaly features at low and middle latitudes. A high‐resolution National Center for Atmospheric Research‐Thermosphere Ionosphere Mesosphere Energetics Global Circulation Model (TIMEGCM) simulation reproduced most of the observed latitudinal variations of the nighttime mass density as well as the thermospheric midnight temperature maximum (MTM). Model results suggest that superposition of diurnal and semidiurnal migrating tides of modes up to wave number 6 is the likely cause of both the NEMA and MTM phenomena.</description><identifier>ISSN: 0148-0227</identifier><identifier>ISSN: 2169-9380</identifier><identifier>EISSN: 2156-2202</identifier><identifier>EISSN: 2169-9402</identifier><identifier>DOI: 10.1029/2010JA015784</identifier><language>eng</language><publisher>Washington, DC: Blackwell Publishing Ltd</publisher><subject>Atmospheric research ; Atmospheric sciences ; Density ; Diurnal variations ; Earth sciences ; Earth, ocean, space ; Equator ; Exact sciences and technology ; Ionosphere ; Latitude ; mass density ; Pressure ; Temperature ; thermosphere</subject><ispartof>Journal of Geophysical Research: Space Physics, 2010-12, Vol.115 (A12), p.n/a</ispartof><rights>Copyright 2010 by the American Geophysical Union.</rights><rights>2015 INIST-CNRS</rights><rights>Copyright 2010 by American Geophysical Union</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4127-94b2441561fe1886a151301ae7bb5bfc0e05e582012c5f86e85a1364a13b9a833</citedby><cites>FETCH-LOGICAL-c4127-94b2441561fe1886a151301ae7bb5bfc0e05e582012c5f86e85a1364a13b9a833</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,11514,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=23823836$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Ma, Ruiping</creatorcontrib><creatorcontrib>Xu, Jiyao</creatorcontrib><creatorcontrib>Wang, Wenbin</creatorcontrib><creatorcontrib>Lei, Jiuhou</creatorcontrib><creatorcontrib>Liu, Han-Li</creatorcontrib><creatorcontrib>Maute, Astrid</creatorcontrib><creatorcontrib>Hagan, Maura E.</creatorcontrib><title>Variations of the nighttime thermospheric mass density at low and middle latitudes</title><title>Journal of Geophysical Research: Space Physics</title><addtitle>J. Geophys. Res</addtitle><description>The latitudinal structure of the nighttime thermospheric mass density at 385 km has been investigated using observations made by the accelerometer onboard the CHAMP satellite between 2002 and 2007. The nighttime thermospheric mass density had a clear latitudinal variation. There was a local density peak around the geographic equator and two minima at about ±30°. This nighttime equatorial mass anomaly (NEMA) was opposite to the latitudinal variations of the daytime ionospheric equatorial anomaly and thermospheric mass density anomaly as both have minima at the magnetic dip equator and maxima around ±20° in magnetic latitudes. This anomalous behavior of the nighttime thermospheric mass density had strong local time, seasonal, hemispheric, and solar cycle dependences. The largest crest‐to‐trough ratio between the peak density at the equator and the minima at the anomaly latitudes (±30°) occurred between 0000 and 0200 local time. The NEMA appeared to be more pronounced during solstice seasons. It was also stronger during solar minimum than during solar maximum. In addition, under the same geophysical conditions, the empirical NRLMSISE‐00 model shows similar but much weaker nighttime mass density anomaly features at low and middle latitudes. A high‐resolution National Center for Atmospheric Research‐Thermosphere Ionosphere Mesosphere Energetics Global Circulation Model (TIMEGCM) simulation reproduced most of the observed latitudinal variations of the nighttime mass density as well as the thermospheric midnight temperature maximum (MTM). Model results suggest that superposition of diurnal and semidiurnal migrating tides of modes up to wave number 6 is the likely cause of both the NEMA and MTM phenomena.</description><subject>Atmospheric research</subject><subject>Atmospheric sciences</subject><subject>Density</subject><subject>Diurnal variations</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Equator</subject><subject>Exact sciences and technology</subject><subject>Ionosphere</subject><subject>Latitude</subject><subject>mass density</subject><subject>Pressure</subject><subject>Temperature</subject><subject>thermosphere</subject><issn>0148-0227</issn><issn>2169-9380</issn><issn>2156-2202</issn><issn>2169-9402</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp9kMtKAzEYhYMoWLQ7HyAI7hzNdZIua9HW0iqU2i5DZiZjo3OpSUrt25vSIq4MIYfAd85_AeAKozuMSO-eIIzGfYS5kOwEdAjmaUIIIqeggzCTCSJEnIOu9x8oHsZThnAHzBbaWR1s23jYljCsDGzs-yoEW5v9z9WtX0exOay197AwjbdhB3WAVbuFuilgbYuiMrCKKWFTGH8JzkpdedM96gV4e3qcD0bJ5HX4POhPkpxhIpIeywhjsUtcGixlqjHHFGFtRJbxrMyRQdxwGcciOS9laiTXmKYsPllPS0ovwPUhd-3ar43xQX20G9fEkqqHUy4YEyJCtwcod633zpRq7Wyt3U5hpPZ7U3_3FvGbY6b2ua5Kp5vc-l8PoTJemkaOHritrczu30w1Hs76BEmybyY5uKwP5vvXpd2nSgUVXC1fhopM59OHxWipJvQHRg6JRw</recordid><startdate>201012</startdate><enddate>201012</enddate><creator>Ma, Ruiping</creator><creator>Xu, Jiyao</creator><creator>Wang, Wenbin</creator><creator>Lei, Jiuhou</creator><creator>Liu, Han-Li</creator><creator>Maute, Astrid</creator><creator>Hagan, Maura E.</creator><general>Blackwell Publishing Ltd</general><general>American Geophysical Union</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TG</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>H8D</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L7M</scope><scope>M2P</scope><scope>P5Z</scope><scope>P62</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope></search><sort><creationdate>201012</creationdate><title>Variations of the nighttime thermospheric mass density at low and middle latitudes</title><author>Ma, Ruiping ; Xu, Jiyao ; Wang, Wenbin ; Lei, Jiuhou ; Liu, Han-Li ; Maute, Astrid ; Hagan, Maura E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4127-94b2441561fe1886a151301ae7bb5bfc0e05e582012c5f86e85a1364a13b9a833</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Atmospheric research</topic><topic>Atmospheric sciences</topic><topic>Density</topic><topic>Diurnal variations</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Equator</topic><topic>Exact sciences and technology</topic><topic>Ionosphere</topic><topic>Latitude</topic><topic>mass density</topic><topic>Pressure</topic><topic>Temperature</topic><topic>thermosphere</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ma, Ruiping</creatorcontrib><creatorcontrib>Xu, Jiyao</creatorcontrib><creatorcontrib>Wang, Wenbin</creatorcontrib><creatorcontrib>Lei, Jiuhou</creatorcontrib><creatorcontrib>Liu, Han-Li</creatorcontrib><creatorcontrib>Maute, Astrid</creatorcontrib><creatorcontrib>Hagan, Maura E.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Meteorological &amp; Geoastrophysical Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>Advanced Technologies &amp; Aerospace Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Earth, Atmospheric &amp; Aquatic Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>Aerospace Database</collection><collection>SciTech Premium Collection</collection><collection>Meteorological &amp; Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Science Database (ProQuest)</collection><collection>Advanced Technologies &amp; Aerospace Database</collection><collection>ProQuest Advanced Technologies &amp; Aerospace Collection</collection><collection>Earth, Atmospheric &amp; Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central Basic</collection><jtitle>Journal of Geophysical Research: Space Physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ma, Ruiping</au><au>Xu, Jiyao</au><au>Wang, Wenbin</au><au>Lei, Jiuhou</au><au>Liu, Han-Li</au><au>Maute, Astrid</au><au>Hagan, Maura E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Variations of the nighttime thermospheric mass density at low and middle latitudes</atitle><jtitle>Journal of Geophysical Research: Space Physics</jtitle><addtitle>J. Geophys. Res</addtitle><date>2010-12</date><risdate>2010</risdate><volume>115</volume><issue>A12</issue><epage>n/a</epage><issn>0148-0227</issn><issn>2169-9380</issn><eissn>2156-2202</eissn><eissn>2169-9402</eissn><abstract>The latitudinal structure of the nighttime thermospheric mass density at 385 km has been investigated using observations made by the accelerometer onboard the CHAMP satellite between 2002 and 2007. The nighttime thermospheric mass density had a clear latitudinal variation. There was a local density peak around the geographic equator and two minima at about ±30°. This nighttime equatorial mass anomaly (NEMA) was opposite to the latitudinal variations of the daytime ionospheric equatorial anomaly and thermospheric mass density anomaly as both have minima at the magnetic dip equator and maxima around ±20° in magnetic latitudes. This anomalous behavior of the nighttime thermospheric mass density had strong local time, seasonal, hemispheric, and solar cycle dependences. The largest crest‐to‐trough ratio between the peak density at the equator and the minima at the anomaly latitudes (±30°) occurred between 0000 and 0200 local time. The NEMA appeared to be more pronounced during solstice seasons. It was also stronger during solar minimum than during solar maximum. In addition, under the same geophysical conditions, the empirical NRLMSISE‐00 model shows similar but much weaker nighttime mass density anomaly features at low and middle latitudes. A high‐resolution National Center for Atmospheric Research‐Thermosphere Ionosphere Mesosphere Energetics Global Circulation Model (TIMEGCM) simulation reproduced most of the observed latitudinal variations of the nighttime mass density as well as the thermospheric midnight temperature maximum (MTM). Model results suggest that superposition of diurnal and semidiurnal migrating tides of modes up to wave number 6 is the likely cause of both the NEMA and MTM phenomena.</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2010JA015784</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0148-0227
ispartof Journal of Geophysical Research: Space Physics, 2010-12, Vol.115 (A12), p.n/a
issn 0148-0227
2169-9380
2156-2202
2169-9402
language eng
recordid cdi_proquest_journals_916574477
source Wiley-Blackwell Read & Publish Collection; Wiley-Blackwell AGU Digital Archive
subjects Atmospheric research
Atmospheric sciences
Density
Diurnal variations
Earth sciences
Earth, ocean, space
Equator
Exact sciences and technology
Ionosphere
Latitude
mass density
Pressure
Temperature
thermosphere
title Variations of the nighttime thermospheric mass density at low and middle latitudes
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-23T13%3A30%3A07IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Variations%20of%20the%20nighttime%20thermospheric%20mass%20density%20at%20low%20and%20middle%20latitudes&rft.jtitle=Journal%20of%20Geophysical%20Research:%20Space%20Physics&rft.au=Ma,%20Ruiping&rft.date=2010-12&rft.volume=115&rft.issue=A12&rft.epage=n/a&rft.issn=0148-0227&rft.eissn=2156-2202&rft_id=info:doi/10.1029/2010JA015784&rft_dat=%3Cproquest_cross%3E2563599211%3C/proquest_cross%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c4127-94b2441561fe1886a151301ae7bb5bfc0e05e582012c5f86e85a1364a13b9a833%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=916574477&rft_id=info:pmid/&rfr_iscdi=true