Results 91 to 100 of about 7,355 (309)

Arizona Statewide Rainfall

open access: yes, 1959
A statistical method of deriving a statewide average annual preciptation value for Arizona has been developed in this study. The techniques employed and several examples showing how these calculations may be used to determine any given year's average ...
Green, Christine R.
core  

Global modelling of H2 mixing ratios and isotopic compositions with the TM5 model

open access: yes, 2011
The isotopic composition of molecular hydrogen (H2) contains independent information for constraining the global H2 budget. To explore this, we have implemented hydrogen sources and sinks, including their stable isotopic composition and isotope ...
Langenfelds, R.L.   +16 more
core   +1 more source

Long‐Term Variability and Spatial Differentiation of the Frost‐Free Period in Iceland

open access: yesInternational Journal of Climatology, EarlyView.
Warming in Iceland (May–September) is expressed as fewer Tmin < 0°C days in the interior and more Tmin > 0°C days along the coasts. ABSTRACT Climate change in subarctic regions leads to significant transformations in thermal conditions; however, the long‐term variability of the frost‐free season (FFS)—and consequently, the growing period—remains poorly
Katarzyna Piotrowicz   +3 more
wiley   +1 more source

Some Factors in Tucson Summer Rainfall

open access: yes, 1957
This report describes an investigation of several synoptic and airmass factors as they relate to the occurrence and amount of daily rainfall at Tucson, Arizona.
Bryson, Reid A.
core  

The isotopic composition of methane in the stratosphere : high-altitude balloon sample measurements [PDF]

open access: yes, 2011
The isotopic composition of stratospheric methane has been determined on a large suite of air samples from stratospheric balloon flights covering subtropical to polar latitudes and a time period of 16 yr.
Brass, Marc   +11 more
core   +1 more source

Non‐Stationary Dry‐Spell Hazard Probabilities for Spain

open access: yesInternational Journal of Climatology, EarlyView.
This study assesses long‐term changes in dry‐spell hazard probabilities across Spain (1961–2024) using a novel non‐stationary extreme value framework applied to daily precipitation records from a dense observational network. Results show that dry‐spell duration and associated return levels are dominantly stationary, with non‐stationary models providing
S. M. Vicente‐Serrano   +13 more
wiley   +1 more source

Activities of the wintering party of the 17th Japanese Antarctic Research Expedition in 1976-1977

open access: yesAntarctic Record, 1981
Twenty-nine members of the wintering party occupied Syowa Station from February 1,1976 to January 31,1977,carrying out the preparation and observations in accordance with the program of the first year of research projects of the International ...
Takeo Yoshino
doaj   +1 more source

The Role of Precipitable Water Vapor in Arizona's Summer Rains

open access: yes, 1957
The relation between Arizona's summer rains and the amount of water vapor in the air over Arizona was examined. It was found that the occurrence of rain was primarily determined by the moisture content of the air over the state, defined in this study by ...
Reitan, Clayton H.
core  

Characterisation of Drought and Wet Events in the Paraíba do Sul River Basin—Brazil

open access: yesInternational Journal of Climatology, EarlyView.
Trend analysis identified statistically significant reductions in precipitation (at the 5% significance level) at specific pluviometric stations in São Paulo and Rio de Janeiro, while other areas, mainly in Minas Gerais, experienced significant increases in annual and seasonal rainfall, particularly during summer and spring. These significant trends at
Gildo Rafael de Almeida Santana   +4 more
wiley   +1 more source

Unveiling the critical role of tall-stack emissions in winter nitrate episodes over North China through machine learning and 3D model analysis

open access: yesFrontiers in Environmental Science
Particulate nitrate (pNO3-) pollution persists over the North China Plain despite emission controls. We unravel a key mechanism: tall industrial stacks (≥210 m) release ammonia which, under strong winter oxidizing conditions, forms ammonium nitrate aloft.
Ting Yang   +4 more
doaj   +1 more source

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