scholarly journals Comparison of long-term Moscow and Danish NLC observations: statistical results

2006 ◽  
Vol 24 (11) ◽  
pp. 2841-2849 ◽  
Author(s):  
P. Dalin ◽  
S. Kirkwood ◽  
H. Andersen ◽  
O. Hansen ◽  
N. Pertsev ◽  
...  
Keyword(s):  
Weather Conditions ◽  
Noctilucent Clouds ◽  
Characteristic Scale ◽  
Careful Attention ◽  
Data Set ◽  
First Time ◽  
Term Data ◽  
Statistical Results

Abstract. Noctilucent clouds (NLC) are the highest clouds in the Earth's atmosphere, observed close to the mesopause at 80–90 km altitudes. Systematic NLC observations conducted in Moscow for the period of 1962–2005 and in Denmark for 1983–2005 are compared and statistical results both for seasonally summarized NLC parameters and for individual NLC appearances are described. Careful attention is paid to the weather conditions during each season of observations. This turns out to be a very important factor both for the NLC case study and for long-term data set analysis. Time series of seasonal values show moderate similarity (taking into account the weather conditions) but, at the same time, the comparison of individual cases of NLC occurrence reveals substantial differences. There are positive trends in the Moscow and Danish normalized NLC brightness as well as nearly zero trend in the Moscow normalized NLC occurrence frequency but these long-term changes are not statistically significant. The quasi-ten-year cycle in NLC parameters is about 1 year shorter than the solar cycle during the same period. The characteristic scale of NLC fields is estimated for the first time and it is found to be less than 800 km.

scholarly journals Insights Into Fire-based Soil Temperature and Moisture Changes From a Long-term Data Set in Alaska

2021 ◽  
Author(s):  
Kristen Manies ◽  
Jennifer Harden ◽  
William Cable ◽  
Jamie Hollingsworth
Keyword(s):  
Soil Temperature ◽  
Data Set ◽  
Term Data ◽  
Soil Temperature And Moisture

Trophic Level Relationships in Pelagic Food Webs: Comparisons Derived from Long-Term Data Sets for Oneida Lake, New York (USA), and Lake St. George, Ontario (Canada)

1992 ◽  
Vol 49 (8) ◽  
pp. 1588-1596 ◽  
Author(s):  
Donald J. McQueen ◽  
Edward L. Mills ◽  
John L. Forney ◽  
Mark R. S. Johannes ◽  
John R. Post
Keyword(s):  
New York ◽  
Total Phosphorus ◽  
Trophic Level ◽  
Data Sets ◽  
Phytoplankton Abundance ◽  
Data Set ◽  
Oneida Lake ◽  
Pelagic Food Webs ◽  
Term Data

We used standardized methods to analyze a 14-yr data set from Oneida Lake and a 10-yr data set from Lake St. George. We estimated mean summer concentrations of several trophic level indicators including piscivores, planktivores, zooplankton, phytoplankton, and total phosphorus, and we then investigated the relationships between these variables. Both data sets yielded similar long-term and short-term trends. The long-term mean annual trends were that (1) the relationships between concentrations of planktivores and zooplankton (including daphnids) were always negative, (2) the relationships between concentrations of zooplankton and various measures of phytoplankton abundance were unpredictable and never statistically significant, and (3) the relationships between total phosphorus and various measures of phytoplankton abundance were always positive. Over short periods, the data from both lakes showed periodic, strong top-down relationships between concentrations of zooplankton (especially large Daphnia) and chlorophyll a, but these events were unpredictable and were seldom related to piscivore abundance.

It Is Not Your Parents’ Long-Term Services System: Nursing Homes in a Changing World

2018 ◽  
Vol 39 (8) ◽  
pp. 898-901
Author(s):  
Robert Applebaum ◽  
Shahla Mehdizadeh ◽  
Diane Berish
Keyword(s):  
Nursing Home ◽  
Nursing Homes ◽  
Length Of Stay ◽  
Older Person ◽  
Home Practice ◽  
Data Set ◽  
Study Results ◽  
Utilization Data ◽  
First Time

The long-term services system has changed substantially since the mid-1970s, when the landmark book Last Home for the Aged argued that the move to the nursing home was the last move an older person would make until death. Using detailed nursing home utilization data from the Minimum Data Set, this study tracks three cohorts of first-time nursing home admissions in Ohio from 1994 through 2014. Each cohort was followed for a 3-year period. Study results report dramatic reductions in nursing home length of stay between the 1994 and 2011 cohorts. Reduction in length of stay has important implications for nursing home practice and quality monitoring. The article argues that administrative and regulatory practices have not kept pace with the dramatic changes in how nursing homes are now being used in the long-term services system.

scholarly journals CREATING MULTI-TEMPORAL MAPS OF URBAN ENVIRONMENTS FOR IMPROVED LOCALIZATION OF AUTONOMOUS VEHICLES

2020 ◽  
Vol XLIII-B2-2020 ◽  
pp. 317-323
Author(s):  
J. Schachtschneider ◽  
C. Brenner
Keyword(s):  
Urban Areas ◽  
Autonomous Vehicles ◽  
Weather Conditions ◽  
Point Clouds ◽  
Urban Environments ◽  
Seasonal Effects ◽  
Data Set ◽  
Multi Temporal ◽  
One Year

Abstract. The development of automated and autonomous vehicles requires highly accurate long-term maps of the environment. Urban areas contain a large number of dynamic objects which change over time. Since a permanent observation of the environment is impossible and there will always be a first time visit of an unknown or changed area, a map of an urban environment needs to model such dynamics.In this work, we use LiDAR point clouds from a large long term measurement campaign to investigate temporal changes. The data set was recorded along a 20 km route in Hannover, Germany with a Mobile Mapping System over a period of one year in bi-weekly measurements. The data set covers a variety of different urban objects and areas, weather conditions and seasons. Based on this data set, we show how scene and seasonal effects influence the measurement likelihood, and that multi-temporal maps lead to the best positioning results.

A long-term data set for hydrologic modeling in a snow-dominated mountain catchment

2011 ◽  
Vol 47 (7) ◽  
Author(s):  
Michele L. Reba ◽  
Danny Marks ◽  
Mark Seyfried ◽  
Adam Winstral ◽  
Mukesh Kumar ◽  
...  
Keyword(s):  
Hydrologic Modeling ◽  
Data Set ◽  
Mountain Catchment ◽  
Term Data

Addressing ecology and sustainability in mega-sporting events: The 2006 football World Cup in Germany

2010 ◽  
Vol 16 (4) ◽  
pp. 587-600 ◽  
Author(s):  
Harald Dolles ◽  
Sten Söderman
Keyword(s):  
Point Of View ◽  
Sporting Events ◽  
World Cup ◽  
Sporting Event ◽  
History Of ◽  
Waste Energy ◽  
First Time ◽  
Water Waste

AbstractFor the first time in the history of FIFA (Fédération Internationale de Football Association), the football (soccer) World Cup held in Germany 2006 specifically addressed environmental concerns. By doing so, the German Organizing Committee did not have the objective of creating a short-term vision, but rather of making a long-term and lasting contribution to the improvement of environmental protection in hosting a mega-sporting event. By taking the football world cup in Germany as a case study, we will provide insights into the so-called ‘Green Goal’ programme and its four main areas: water, waste, energy, and transportation. From a global point of view, climate protection was added by the Organizing Committee as the fifth area of action and was recognised as a cross-sectorial task. Finally, questions are addressed on how to apply those measurements in the planning and organisation of other mega (-sporting) events.

scholarly journals Cirrus clouds properties derived from polarized micro pulse lidar (p-mpl) observations at the atmospheric observatory ‘el arenosillo’ (sw iberian peninsula): a case study for radiative implications

2018 ◽  
Vol 176 ◽  
pp. 05042
Author(s):  
Ana del Águila ◽  
Laura Gómez ◽  
José Manuel Vilaplana ◽  
Mar Sorribas ◽  
Carmen Córdoba-Jabonero
Keyword(s):  
Climate Change ◽  
Iberian Peninsula ◽  
Surface Radiation ◽  
Radiative Balance ◽  
Macrophysical Properties ◽  
Micro Pulse Lidar ◽  
First Time ◽  
Change Concerns

Cirrus (Ci) clouds are involved in Climate Change concerns since they affect the radiative balance of the atmosphere. Recently, a polarized Micro Pulse Lidar (P-MPL), standard system within NASA/MPLNET has been deployed at the INTA/Atmospheric Observatory ‘El Arenosillo’ (ARN), located in the SW Iberian Peninsula. Hence, the INTA/P-MPL system is used for Ci detection over that station for the first time. Radiative effects of a Ci case observed over ARN are examined, as reference for future long-term Ci observations. Optical and macrophysical properties are retrieved, and used for radiative transfer simulations. Data are compared to the measured surface radiation levels and all-sky images simultaneously performed at the ARN station.

Towards upgraded capability in offshore seismic studies with the new National Australian Pool of Ocean Bottom Seismographs

2013 ◽  
Vol 53 (2) ◽  
pp. 482
Author(s):  
Alexey Goncharov ◽  
Nicholas Rawlinson ◽  
Bruce Goleby
Keyword(s):  
Natural Hazard ◽  
Ocean Bottom ◽  
Data Set ◽  
Multi Scale ◽  
Refraction Seismic ◽  
Short And Long Term ◽  
Ocean Bottom Seismographs ◽  
Obs Data ◽  
First Time

In 2013, Australia, for the first time in its history, will obtain a national pool of ocean-bottom seismographs (OBSs) suitable for multi-scale experiments at sea and for onshore-offshore combined observations. Twenty broadband OBS instruments will be purchased for short- and long-term deployment (up to 12 months) to a maximum depth of 6 km. The instruments will be made available to Australian researchers through ANSIR, with only the costs of mobilisation and deployment to be met. It is anticipated that the OBS facility will greatly enhance the research capabilities of Australian scientists in the area of Earth imaging, offshore exploration, and natural hazard assessment. OBS experiments in Australia have been limited so far, with the only data set collected by Geoscience Australia in 1995–96 on a number of coincident reflection/refraction seismic transects across the northwestern Australian Margin. The main findings from that experiment will be reviewed in the context of recent OBS data processing and acquisition advances. The scope of the experiments with the new national Australian pool of OBSs will be presented, as well as practicalities and logistics of the OBS experiments.

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