Results 61 to 70 of about 1,051,099 (291)

Latitudinal variations of the plasma density parameters in the topside ionosphere during super geomagnetic storms of May and October 2024

open access: yesEarth, Planets and Space
The latitudinal variations in plasma density parameters (total ion density, i.e. electron density, ion composition, and TEC) during the super geomagnetic storms on 10–11 May and 10–11 October 2024 are investigated in this study.
Sovan Saha   +3 more
doaj   +1 more source

Recent Basal Melting of a Mid‐Latitude Glacier on Mars [PDF]

open access: yesJournal of Geophysical Research: Planets, 2017
AbstractEvidence for past basal melting of young (late Amazonian‐aged), debris‐covered glaciers in Mars' mid‐latitudes is extremely rare. Thus, it is widely thought that these viscous flow features (VFFs) have been perennially frozen to their beds. We identify an instance of recent, localized wet‐based mid‐latitude glaciation, evidenced by a candidate ...
Butcher, Frances   +6 more
openaire   +5 more sources

A mid-latitude ozone model for the US standard atmosphere, 1975 (summary) [PDF]

open access: yes, 1974
A mid-latitude, Northern-Hemisphere model of the daytime ozone distribution in the troposphere, stratosphere, and lower mesosphere was constructed. Data from rocket soundings in the latitude range 45 deg N + or - 15 deg, results of balloon soundings at ...
Krueger, A. J., Minzner, R. A.
core  

Exposure to heat waves and drought improves subsequent leaf heat tolerance for five oak species in southern California

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Given the threats of climate change, we investigated the impact of high temperatures separately and in combination with reduced soil water on leaf heat tolerance for five oaks (Fagaceae) with overlapping ranges in southern California, USA: Quercus agrifolia and Q. chrysolepis (evergreen species), Q. douglasii and Q.
Casey D. Wisely   +7 more
wiley   +1 more source

Temporal pattern of change in terrestrial NPP: Global (A), low-latitude (B), mid-latitude (C) and high-latitude (D) as a function of climate and increasing atmospheric CO2 under A2 and B1.

open access: yes, 2014
Temporal pattern of change in terrestrial NPP: Global (A), low-latitude (B), mid-latitude (C) and high-latitude (D) as a function of climate and increasing atmospheric CO2 under A2 and B1.
Jia Yang (427274)   +13 more
core   +1 more source

Evolutionary history and taxonomy of the genus Zea

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Taxonomic differentiation of teosinte species (Zea spp.), the closest relatives of maize (Z. mays) is crucial for understanding their distribution, ecology, and evolutionary history. Resolving the taxonomic uncertainties is of scientific interest and has practical implications for biodiversity management, preservation, and utilization.
José de Jesús Sánchez González   +4 more
wiley   +1 more source

Influence of mid-latitude sea surface temperature fronts on the atmospheric water cycle and storm track activity [PDF]

open access: yesWeather and Climate Dynamics
The climatological mean enhancement of the turbulent air–sea heat exchange along mid-latitude sea surface temperature (SST) fronts that anchor mid-latitude storm tracks suggests its crucial role in the atmospheric water cycle and storm tracks through the
F. Ogawa   +5 more
doaj   +1 more source

On the cause of IMF By related mid- and low latitude magnetic disturbances

open access: yes, 2007
An analysis of the effect of the IMF By on near-Earth low and mid-latitude magnetic disturbances is presented. In particular the contribution from field-aligned currents ( FACs) connected to the polar regions is investigated.
Christiansen, Freddy   +3 more
core   +1 more source

Model calculations of possible ionospheric backscatter echo area for a mid-latitude HF radar [PDF]

open access: yes, 2005
P(論文)HF ray path calculation is performed in order to identify possible ionospheric backscatter echo area for an HF radar at mid-latitude. The calculation is made on the basis of the R.M. Jones and J.J. Stephenson (U.S. Dept. of Commerce, OT Rep.
Ogawa,Tadahiko, Nishitani,Nozomu
core   +1 more source

Petal to the metal: The slow road to automating large‐scale phenology labeling for herbarium specimens

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Herbarium specimens represent critical historical records of plant phenology, yet automating annotation of reproductive structures remains challenging given the diversity of floral morphologies, specimen age and quality, and image quality.
Erin L. Grady   +6 more
wiley   +1 more source

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