Publications by authors named "Wentz F"

Background: Participation in regular physical activity (PA) is a critical component of overall well-being. However, opportunities to engage in health-enhancing PA for families who have an autistic child are relatively obsolete. A virtual PA intervention has the potential to address many participation barriers and represents a timely opportunity to promote positive trajectories of PA among vulnerable populations.

View Article and Find Full Text PDF

We provide scientific evidence that a human-caused signal in the seasonal cycle of tropospheric temperature has emerged from the background noise of natural variability. Satellite data and the anthropogenic "fingerprint" predicted by climate models show common large-scale changes in geographical patterns of seasonal cycle amplitude. These common features include increases in amplitude at mid-latitudes in both hemispheres, amplitude decreases at high latitudes in the Southern Hemisphere, and small changes in the tropics.

View Article and Find Full Text PDF

The Multi-Sensor Advanced Climatology of Liquid Water Path (MAC-LWP), an updated and enhanced version of the University of Wisconsin (UWisc) cloud liquid water path (CLWP) climatology, currently provides 29 years (1988 - 2016) of monthly gridded (1°) oceanic CLWP information constructed using Remote Sensing Systems (RSS) inter-calibrated 0.25°-resolution retrievals. Satellite sources include SSM/I, TMI, AMSR-E, WindSat, SSMIS, AMSR-2 and GMI.

View Article and Find Full Text PDF
Article Synopsis
  • Satellite microwave sensors have been measuring near-surface ocean winds for almost 40 years, contributing significantly to weather and climate research through systematic data collection.
  • Various wind datasets are being intercalibrated and merged into consistent climate data records (CDRs), with evaluations done in comparison to ocean buoys and other satellite sensors.
  • Future data continuity depends on utilizing new satellite missions like OSCAT-2, which will face calibration challenges due to the failure of RapidScat, as there are currently no new radiometer missions planned to measure wind speed.
View Article and Find Full Text PDF

Satellite temperature measurements do not support the recent claim of a "leveling off of warming" over the past two decades. Tropospheric warming trends over recent 20-year periods are always significantly larger (at the 10% level or better) than model estimates of 20-year trends arising from natural internal variability. Over the full 38-year period of the satellite record, the separation between observed warming and internal variability estimates is even clearer.

View Article and Find Full Text PDF

Since the late 1970s, satellite-based instruments have monitored global changes in atmospheric temperature. These measurements reveal multidecadal tropospheric warming and stratospheric cooling, punctuated by short-term volcanic signals of reverse sign. Similar long- and short-term temperature signals occur in model simulations driven by human-caused changes in atmospheric composition and natural variations in volcanic aerosols.

View Article and Find Full Text PDF

We perform a multimodel detection and attribution study with climate model simulation output and satellite-based measurements of tropospheric and stratospheric temperature change. We use simulation output from 20 climate models participating in phase 5 of the Coupled Model Intercomparison Project. This multimodel archive provides estimates of the signal pattern in response to combined anthropogenic and natural external forcing (the fingerprint) and the noise of internally generated variability.

View Article and Find Full Text PDF

Young et al. (Reports, 22 April 2011, p. 451) reported trends in global mean wind speed much larger than found by other investigators.

View Article and Find Full Text PDF

In a recent multimodel detection and attribution (D&A) study using the pooled results from 22 different climate models, the simulated "fingerprint" pattern of anthropogenically caused changes in water vapor was identifiable with high statistical confidence in satellite data. Each model received equal weight in the D&A analysis, despite large differences in the skill with which they simulate key aspects of observed climate. Here, we examine whether water vapor D&A results are sensitive to model quality.

View Article and Find Full Text PDF
Article Synopsis
  • Satellite data shows a rise in ocean atmospheric moisture by 0.41 kg/m² per decade since 1988.
  • Current climate models indicate this increase cannot be attributed solely to natural climate variability.
  • Analysis reveals that this increase is mainly driven by human-caused greenhouse gas emissions, marking an emerging anthropogenic signal in Earth's moisture content.
View Article and Find Full Text PDF

Climate models and satellite observations both indicate that the total amount of water in the atmosphere will increase at a rate of 7% per kelvin of surface warming. However, the climate models predict that global precipitation will increase at a much slower rate of 1 to 3% per kelvin. A recent analysis of satellite observations does not support this prediction of a muted response of precipitation to global warming.

View Article and Find Full Text PDF

Satellite-based measurements of decadal-scale temperature change in the lower troposphere have indicated cooling relative to Earth's surface in the tropics. Such measurements need a diurnal correction to prevent drifts in the satellites' measurement time from causing spurious trends. We have derived a diurnal correction that, in the tropics, is of the opposite sign from that previously applied.

View Article and Find Full Text PDF

The month-to-month variability of tropical temperatures is larger in the troposphere than at Earth's surface. This amplification behavior is similar in a range of observations and climate model simulations and is consistent with basic theory. On multidecadal time scales, tropospheric amplification of surface warming is a robust feature of model simulations, but it occurs in only one observational data set.

View Article and Find Full Text PDF

Two independent analyses of the same satellite-based radiative emissions data yield tropospheric temperature trends that differ by 0.1 degrees C per decade over 1979 to 2001. The troposphere warms appreciably in one satellite data set, while the other data set shows little overall change.

View Article and Find Full Text PDF

Measurements of sea surface temperature (SST) can be made by satellite microwave radiometry in all weather conditions except rain. Microwaves penetrate clouds with little attenuation, giving an uninterrupted view of the ocean surface. This is a distinct advantage over infrared measurements of SST, which are obstructed by clouds.

View Article and Find Full Text PDF

Observations from Earth-orbiting satellites have been a key component in monitoring climate change for the past two decades. This has become possible with the availability of air temperatures from the Microwave Sounding Unit (MSU) since 1979, sea surface temperatures from the Advanced Very High Resolution Radiometer (AVHRR) since 1982 and, most recently, measurements of atmospheric water vapour content from the Special Sensor Microwave Imager (SSM/I) since 1987. Here we present a detailed comparison of each pair of these three time series, focusing on both interannual and decadal variations in climate.

View Article and Find Full Text PDF

The interrelationships of restorative/prosthetic problems involving the physiologic gingival attachment have been reviewed. Specific problems that may occur include subgingival caries, crown fracture, inadequate crown length, pin perforation, and exostosis. Periodontal surgery is recommended for some of these problems to assure acceptable periodontal health to support the restorative therapy and provide a long-term prognosis.

View Article and Find Full Text PDF

Distal tipping forces were applied to the maxillary cuspid teeth of five domestic cats. Surgical elimination of the gingival attachment of one tooth in each cat resulted in greater distal crown movement and a shift of the center of rotation toward the root apex.

View Article and Find Full Text PDF

Electrosurgery is used for intraoral incisions by many clinicians. Much controversy surrounds the effect of lateral heat produced during the electrosurgical incision upon the healing of adjacent connective tissue. Ten electrosurgical incisions were made in the gingiva in each of five adult male volunteers.

View Article and Find Full Text PDF

Fifty-four Class V amalgam restorations were placed in nine beagle dogs to determine whether electrosurgical effects on pulp tissue could be altered by the presence of metallic restorations. An electrosurgical technique was performed, simulating clinical procedures for tissue removal while traversing the restorations. Time and power-use measurements were recorded for each operation.

View Article and Find Full Text PDF

A review of a new plastic surgical procedure using autogenous grafts of dense connective tissue placed submucosally in anterior areas of collapsed, deformed edentulous ridges has been presented. This technique allows augmentation of an anterior, deformed edentulous ridge to a proper form, color, and texture before placement of a fixed prosthesis. Previous solutions to this problem have resulted in an esthetic compromise at best.

View Article and Find Full Text PDF

The healing of electrosurgical incisions in the gingivae of adult men was investigated at 6-hour intervals. Clinical observation indicated that incisions healed progressively until 72 hours, when they were barely discernible. Clinical evidence of inflammation associated with the wounds was negligible.

View Article and Find Full Text PDF

The scanning multichannel microwave radiometer results for the Gulf of Alaska Seasat Experiment Workshop are quite encouraging, especially in view of the immaturity of the data-processing algorithms. For open ocean, rain-free cells of highest-quality surface truth wind determinations exhibit standard deviations of 3 meters per second about a bias of 1.5 meters per second.

View Article and Find Full Text PDF