Results 151 to 160 of about 5,084,494 (418)

The Price of the “Memoirs of the Geological Survey” [PDF]

open access: yesNature, 1879
THE publication of Mr. Skertchley's “Manufacture of Gun Flints,” in the Memoirs of the Geological Survey, seems to be a good opportunity for again bringing under notice the absurd price charged for some of the Survey volumes. In NATURE, vol. xviii. p. 562, Prof.
openaire   +3 more sources

Decoding Variants of Pyrite, Arsenopyrite, and Marcasite Using an Electron Counting Rule

open access: yesAngewandte Chemie International Edition, EarlyView.
A new ‘structure determining electron’ (SDE) rule allows identifying marcasite (M), arsenopyrite (A), and pyrite (P) related compounds based on the electron distribution around transition metals. It offers a framework for categorising structural variants as compounds with M, A, and P layers. Nine new ternary representatives, including the first to show
Kristian Witthaut   +2 more
wiley   +1 more source

Predictability of European winter 2020/2021: Influence of a mid‐winter sudden stratospheric warming

open access: yesAtmospheric Science Letters, Volume 23, Issue 12, December 2022., 2022
Boreal winter 2020/2021 was characterised by a negative North Atlantic Oscillation (NAO) pressure pattern, yet the signals from the ensemble mean of many seasonal forecast systems were for a positive NAO. In this letter we focus on the GloSea5 seasonal forecast system and investigate if there is any evidence for forecast error, or whether the ...
Julia F. Lockwood   +18 more
wiley   +1 more source

Error investigation of rain retrievals from disdrometer data using triple colocation

open access: yesAtmospheric Science Letters, Volume 23, Issue 12, December 2022., 2022
This work aims to provide error estimates of three in‐situ precipitation sources applying the triple colocation statistical method. The latter has the enviable advantage to succeed in characterizing the uncertainties of co‐located measurements being compared each other, without requiring the knowledge of the true value, which is often unknown.
Clizia Annella   +4 more
wiley   +1 more source

Distinct response of near surface air temperature to clouds in North China

open access: yesAtmospheric Science Letters, Volume 23, Issue 12, December 2022., 2022
Cloud weakens Tmax and increases Tmin, and thus decreases daily temperature range (DTR), which is mainly due to the blocking effects of clouds to downwelling solar radiation and trapping effects to upwelling longwave radiation. However, the relative impacts of clouds on Tmax and Tmin vary with locations, with relatively stronger impact on Tmin and DTR ...
Shuyi Jiang, Chuanfeng Zhao, Yan Xia
wiley   +1 more source

Colonial Geological Surveys [PDF]

open access: yesNature, 1944
IN his article on Colonial Geological Surveys in NATURE of March 4, Mr. V. A. Eyles gave a useful resume of recent discussions. There are, however, some further considerations to be noted. The figures he quoted from Sir Edmund Teale's paper of the results of mining operations, following upon the activities of Colonial Geological Surveys, do not include
openaire   +2 more sources

Upper‐level midlatitude troughs in boreal winter have an amplified low‐latitude linkage over Africa

open access: yesAtmospheric Science Letters, Volume 24, Issue 1, January 2023., 2023
Composite mean anomaly of 850‐hPa temperature at 10–15° N 2 days after the strongest midlatitude upper‐level trough days. The troughs are located at the longitude shown on the x‐axis, and the temperature is measured 16.5° longitude downstream (east) of the trough. Black dots indicate statistical significance.
Neil Ward   +3 more
wiley   +1 more source

Comparing cranial biomechanics between Barbourofelis fricki and Smilodon fatalis: Is there a universal killing‐bite among saber‐toothed predators?

open access: yesThe Anatomical Record, EarlyView.
Abstract Saber‐tooths, extinct apex predators with long and blade‐like upper canines, have appeared iteratively at least five times in the evolutionary history of vertebrates. Although saber‐tooths exhibit a relatively diverse range of morphologies, it is widely accepted that all killed their prey using the same predatory behavior. In this study, we CT‐
Borja Figueirido   +2 more
wiley   +1 more source

Progress, challenges, and future steps in data assimilation for convection‐permitting numerical weather prediction: Report on the virtual meeting held on 10 and 12 November 2021

open access: yesAtmospheric Science Letters, Volume 24, Issue 1, January 2023., 2023
We report on a meeting on progress and challenges in convection‐permitting data assimilation. Novel developments include the assimilation of novel observations such as cloud‐affected satellite radiances, ground‐based profiling networks and aircraft data, as well as methodological advancements in error covariance modelling, and progress in operational ...
Guannan Hu   +7 more
wiley   +1 more source

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