Search Results - "PARKINSON, C. L."

Arctic sea ice variability and trends, 1979–2010 by Cavalieri, D. J, Parkinson, C. L

“…Analyses of 32 yr (1979–2010) of Arctic sea ice extents and areas derived from satellite passive microwave radiometers are presented for the Northern…”
Get full text

Antarctic sea ice variability and trends, 1979–2010 by Parkinson, C. L, Cavalieri, D. J

“…In sharp contrast to the decreasing sea ice coverage of the Arctic, in the Antarctic the sea ice cover has, on average, expanded since the late 1970s. More…”
Get full text

Antarctic sea ice variability and trends, 1979–2006 by Cavalieri, D. J., Parkinson, C. L.

“…Analyses of 28 years (1979–2006) of Antarctic sea ice extents and areas derived from satellite passive microwave radiometers are presented and placed in the…”
Get full text

30-Year satellite record reveals contrasting Arctic and Antarctic decadal sea ice variability by Cavalieri, D. J., Parkinson, C. L., Vinnikov, K. Y.

“…A 30‐year satellite record of sea ice extents derived mostly from satellite microwave radiometer observations reveals that the Arctic sea ice extent decreased…”
Get full text

Deriving long-term time series of sea ice cover from satellite passive-microwave multisensor data sets by Cavalieri, D. J., Parkinson, C. L., Gloersen, P., Comiso, J. C., Zwally, H. J.

“…We have generated consistent sea ice extent and area data records spanning 18.2 years from passive‐microwave radiances obtained with the Nimbus 7 scanning…”
Get full text

Observed Hemispheric Asymmetry in Global Sea Ice Changes by Cavalieri, D. J., Gloersen, P., Parkinson, C. L., Comiso, J. C., Zwally, H. J.

“…From November 1978 through December 1996, the areal extent of sea ice decreased by 2.9 ± 0.4 percent per decade in the Arctic and increased by 1.3 ± 0.2…”
Get full text

Phylogeny and historical biogeography of African ground squirrels: the role of climate change in the evolution of Xerus by HERRON, M. D., WATERMAN, J. M., PARKINSON, C. L.

“…We used phylogenetic and phylogeographical methods to infer relationships among African ground squirrels of the genus Xerus. Using Bayesian, maximum‐parsimony,…”
Get full text

Aqua: an Earth-Observing Satellite mission to examine water and other climate variables by Parkinson, C.L.

“…Aqua is a major satellite mission of the Earth Observing System (EOS), an international program centered at the U.S. National Aeronautics and Space…”
Get full text

Dynamic nucleotide mutation gradients and control region usage in squamate reptile mitochondrial genomes by Castoe, T A, Gu, W, de Koning, A P J, Daza, J M, Jiang, Z J, Parkinson, C L, Pollock, D D

“…Gradients of nucleotide bias and substitution rates occur in vertebrate mitochondrial genomes due to the asymmetric nature of the replication process. The…”
Get more information

Phylogeography of the pitviper clade Agkistrodon: historical ecology, species status, and conservation of cantils by Parkinson, Christopher L., Zamudio, Kelly R., Greene, Harry W.

“…We used mitochondrial DNA sequences from three gene regions and two tRNAs (ND4, tRNA‐HIS‐SER, 12S, and 16S rDNA) to investigate the historical ecology of the…”
Get full text

Variability of Antarctic sea ice 1979–1998 by Zwally, H. Jay, Comiso, Josefino C., Parkinson, Claire L., Cavalieri, Donald J., Gloersen, Per

“…The principal characteristics of the variability of Antarctic sea ice cover as previously described from satellite passive microwave observations are also…”
Get full text

Arctic sea ice extents, areas, and trends, 1978-1996 by Parkinson, Claire L., Cavalieri, Donald J., Gloersen, Per, Zwally, H. Jay, Comiso, Josefino C.

“…Satellite passive‐microwave data for November 1978 through December 1996 reveal marked seasonal, regional, and interannual variabilities, with an overall…”
Get full text

Seed Plant Phylogeny Inferred from All Three Plant Genomes: Monophyly of Extant Gymnosperms and Origin of Gnetales from Conifers by Chaw, Shu-Miaw, Parkinson, Christopher L., Cheng, Yuchang, Vincent, Thomas M., Palmer, Jeffrey D.

“…Phylogenetic relationships among the five groups of extant seed plants are presently quite unclear. For example, morphological studies consistently identify…”
Get full text

Multigene phylogeny of land plants with special reference to bryophytes and the earliest land plants by Nickrent, D L, Parkinson, C L, Palmer, J D, Duff, R J

“…A widely held view of land plant relationships places liverworts as the first branch of the land plant tree, whereas some molecular analyses and a cladistic…”
Get full text

Dynamic Evolution of Plant Mitochondrial Genomes: Mobile Genes and Introns and Highly Variable Mutation Rates by Palmer, Jeffrey D., Adams, Keith L., Cho, Yangrae, Parkinson, Christopher L., Qiu, Yin-Long, Song, Keming

“…We summarize our recent studies showing that angiosperm mitochondrial (mt) genomes have experienced remarkably high rates of gene loss and concomitant transfer…”
Get full text

Multigene analyses identify the three earliest lineages of extant flowering plants by Parkinson, Christopher L., Adams, Keith L., Palmer, Jeffrey D.

“…Flowering plants (angiosperms) are by far the largest, most diverse, and most important group of land plants, with over 250,000 species and a dominating…”
Get full text

Passive microwave algorithms for sea ice concentration: A comparison of two techniques by Comiso, Josefino C., Cavalieri, Donald J., Parkinson, Claire L., Gloersen, Per

“…The most comprehensive large-scale characterization of the global sea ice cover so far has been provided by satellite passive microwave data. Accurate…”
Get full text

A hypothesis and model of reduced fetal movement as a common pathogenetic mechanism in clubfoot by Hester, T.W, Parkinson, L.C, Robson, J, Misra, S, Sangha, H, Martin, J.E

“…Summary Background Clubfoot or Talipes equinovarus is characterised by an adducted forefoot, hindfoot varus, and ankle equinus deformity, varying in severity…”
Get full text

Population increase and damage by three species of mites on wheat at 20°C and two humidities by PARKINSON, C. L

Get full text

Variability of Antarctic Sea Ice and Changes in Carbon Dioxide by Zwally, H. Jay, Parkinson, C. L., Comiso, J. C.

“…A definitive long-term decrease in the extent of antarctic sea ice is not detectable from 9 years (1973 to 1981) of year-round satellite observations and…”
Get full text