scholarly journals Evaluation of Water Vapor Radiative Effects Using GPS Data Series over Southwestern Europe

2020 ◽  
Vol 12 (8) ◽  
pp. 1307 ◽  
Author(s):  
Javier Vaquero-Martínez ◽  
Manuel Antón ◽  
Arturo Sanchez-Lorenzo ◽  
Victoria E. Cachorro
Keyword(s):  
Water Vapor ◽  
Short Wave ◽  
Data Series ◽  
Radiative Effects ◽  
Study Region ◽  
Air Temperatures ◽  
Net Flux ◽  
The Difference ◽  
Spectral Ranges

Water vapor radiative effects (WVRE) at surface in the long-wave (LW) and short-wave (SW) spectral ranges under cloud and aerosol free conditions are analyzed for seven stations in Spain over the 2007–2015 period. WVRE is calculated as the difference between the net flux obtained by two radiative transfer simulations; one with water vapor from Global Positioning System (GPS) measurements and the other one without any water vapor (dry atmosphere). The WVRE in the LW ranges from 107.9 Wm 2 to 296.7 Wm − 2 , while in the SW it goes from − 64.9 Wm − 2 to − 6.0 Wm − 2 . The results show a clear seasonal cycle, which allows the classification of stations in three sub-regions. In general, for total (SW + LW) and LW WVRE, winter (DJF) and spring (MAM) values are lower than summer (JJA) and autumn (SON). However, in the case of SW WVRE, the weaker values are in winter and autumn, and the stronger ones in summer and spring. Positive trends for LW (and total) WVRE may partially explain the well-known increase of surface air temperatures in the study region. Additionally, negative trends for SW WVRE are especially remarkable, since they represent about a quarter of the contribution of aerosols to the strong brightening effect (increase of the SW radiation flux at surface associated with a reduction of the cloud cover and aerosol load) observed since the 2000s in the Iberian Peninsula, but with opposite sign, so it is suggested that water vapor could be partially masking the full magnitude of this brightening.

scholarly journals Snow farming: conserving snow over the summer season

2018 ◽  
Vol 12 (1) ◽  
pp. 385-400 ◽  
Author(s):  
Thomas Grünewald ◽  
Fabian Wolfsperger ◽  
Michael Lehning
Keyword(s):  
Laser Scanning ◽  
Short Wave ◽  
Heat Fluxes ◽  
Wave Radiation ◽  
Measured Quantity ◽  
Wind Speeds ◽  
Air Temperatures ◽  
Physically Based ◽  
The Difference ◽  
The One

Abstract. Summer storage of snow for tourism has seen an increasing interest in the last years. Covering large snow piles with materials such as sawdust enables more than two-thirds of the initial snow volume to be conserved. We present detailed mass balance measurements of two sawdust-covered snow piles obtained by terrestrial laser scanning during summer 2015. Results indicate that 74 and 63 % of the snow volume remained over the summer for piles in Davos, Switzerland and Martell, Italy. If snow mass is considered instead of volume, the values increase to 83 and 72 %. The difference is attributed to settling and densification of the snow. Additionally, we adapted the one-dimensional, physically based snow cover model SNOWPACK to perform simulations of the sawdust-covered snow piles. Model results and measurements agreed extremely well at the point scale. Moreover, we analysed the contribution of the different terms of the surface energy balance to snow ablation for a pile covered with a 40 cm thick sawdust layer and a pile without insulation. Short-wave radiation was the dominant source of energy for both scenarios, but the moist sawdust caused strong cooling by long-wave emission and negative sensible and latent heat fluxes. This cooling effect reduces the energy available for melt by up to a factor of 12. As a result only 9 % of the net short-wave energy remained available for melt. Finally, sensitivity studies of the parameters thickness of the sawdust layer, air temperature, precipitation and wind speed were performed. We show that sawdust thickness has a tremendous effect on snow loss. Higher air temperatures and wind speeds increase snow ablation but less significantly. No significant effect of additional precipitation could be found as the sawdust remained wet during the entire summer with the measured quantity of rain. Setting precipitation amounts to zero, however, strongly increased melt. Overall, the 40 cm sawdust provides sufficient protection for mid-elevation (approx. 1500 m a.s.l.) Alpine climates and can be managed with reasonable effort.

Water vapor radiative effects on short-wave radiation in Spain

2018 ◽  
Vol 205 ◽  
pp. 18-25 ◽  
Author(s):  
Javier Vaquero-Martínez ◽  
Manuel Antón ◽  
José Pablo Ortiz de Galisteo ◽  
Roberto Román ◽  
Victoria E. Cachorro
Keyword(s):  
Water Vapor ◽  
Short Wave ◽  
Wave Radiation ◽  
Radiative Effects ◽  
Short Wave Radiation

Water Vapor Radiative Effects On Spain

2018 ◽  
Author(s):  
Javier Vaquero-Martínez
Keyword(s):  
Water Vapor ◽  
Radiative Effects

Depression, pain, and site:

1999 ◽  
Vol 15 (1) ◽  
pp. 10-17
Author(s):  
Molina Omar Franklin ◽  
Tavares Gimenes Pablo ◽  
Aquilino Raphael ◽  
Rank Rise ◽  
Coelho Santos Zeila ◽  
...  
Keyword(s):  
Visual Analogue Scale ◽  
Beck Depression Inventory ◽  
Temporomandibular Disorders ◽  
Analogue Scale ◽  
Epidemiological Data ◽  
Depression Severity ◽  
Internal Joint ◽  
The Difference ◽  
Biomechanical Tests

Objective: To assess the level of depression, severity of pain and pain in single/multiple sites in patients with different severity of bruxing behavior and Temporomandibular Disorders (TMDs). Methods: We evaluated 131 patients with bruxism and TMDs: 20 patients with mild bruxism, 42 patients with moderate bruxism, 45 patients with severe bruxism and 24 patients with extreme bruxism. We used the Beck Depression Inventory (BDI), clinical examination, a questionnaire of clinical epidemiological data, criteria for TMDs and bruxism, palpation of muscles and joints, the Visual Analogue Scale for pain, classification of the occlusion and biomechanical tests to assess for internal joint derangements. Results: The level of depression increased from the mild, to the moderate, severe and extreme bruxing behavior groups, but the difference was significant only from the mild to the extreme group (p<0.001). Pain levels increased from the mild and moderate to the severe and extreme subgroups, but were not statistically significant. Mean number of pain sites increased from the mild, to the moderate, severe and extreme subgroup and the difference was extremely significant (p<0.0001). Conclusion: Levels of depression, severity of pain and pain sites increased with severity of bruxing behavior. A higher number of pain sites with more severe bruxism indicates somatization in bruxers, but a further study using the same protocol and a psychological test for somatization would be indicated to further substantiate these findings.

scholarly journals Events, Time and the Simple Form

2009 ◽  
Vol 17 (1) ◽  
pp. 85-105 ◽  
Author(s):  
Walter H. Hirtle
Keyword(s):  
Simple Form ◽  
Point Of View ◽  
Event Time ◽  
The Difference ◽  
Time Required ◽  
English Verb

Abstract This is an attempt to discern more clearly the underlying or POTENTIAL meaning of the simple form of the English verb, described in Hirtle 1967 as 'perfective'. Vendler's widely accepted classification of events into ACCOMPLISHMENTS, ACHIEVEMENTS, ACTIVITIES, and STATES is examined from the point of view of the time necessarily contained between the beginning and end of any event, i.e. EVENT TIME as represented by the simple form. This examination justifies the well known dynamic/stative dichotomy by showing that event time is evoked in two different ways, that, in fact, the simple form has two ACTUAL significates. Further reflection on the difference between the two types thus expressed—developmental or action-like events and non-developmental or state-like events—leads to the conclusion that the simple form provides a representation of the time required to situate all the impressions involved in the notional or lexical import of the verb.

Russia and EU Countries: Partnership for Modernization

2013 ◽  
pp. 54-61
Author(s):  
T. Romanova ◽  
E. Pavlova
Keyword(s):  
Rule Of Law ◽  
New Classification ◽  
Member States ◽  
The Rule Of Law ◽  
Normative Power ◽  
Eu Member States ◽  
The World ◽  
The Difference ◽  
The Eu

The article examines how the normative power, which the EU puts forward as an ideological basis of its actions in the world, manifests itself in the national partnerships for modernization between Russia and EU member states. The authors demonstrate the influence of the EU’s normativity on its approach to modernization as well as the difference in the positions of its member countries. It is concluded that there is no unity in the EU’s approach to democracy, human rights and the rule of law, and the new classification of EU member states, which is based on their readiness to act in accordance with the Union’s concept of normative power, is offered.

scholarly journals An atlas of cool supergiants from the Magellanic Clouds and typical interlopers

2018 ◽  
Vol 618 ◽  
pp. A137 ◽  
Author(s):  
Ricardo Dorda ◽  
Ignacio Negueruela ◽  
Carlos González-Fernández ◽  
Amparo Marco
Keyword(s):  
Photographic Plate ◽  
Magellanic Clouds ◽  
Spectral Classification ◽  
Late Type ◽  
Spectral Ranges ◽  
Work Done

We present an atlas composed of more than 1500 spectra of late-type stars (spectral types from G to M) observed simultaneously in the optical and calcium triplet spectral ranges. These spectra were obtained as part of a survey to search for cool supergiants in the Magellanic Clouds and were taken over four epochs. We provide the spectral and luminosity classification for each spectrum (71% are supergiants, 13% are giants or luminous giants, 4% are carbon or S stars, and the remaining 12% are foreground stars of lesser luminosities). We also provide a detailed guide for the spectral classification of luminous late-type stars, the result of the extensive classification work done for the atlas. Although this guide is based on classical criteria, we have put them together and re-elaborated them for modern CCD-spectra as these criteria were scattered among many different works and mainly conceived for use with photographic plate spectra. The result is a systematic, well-tested process for identifying and classifying luminous late-type stars, illustrated with CCD spectra of standard stars and the classifications of our own catalogue.

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