What does getting concussed mean?
Related Pages. A concussion is a type of traumatic brain injury—or TBI—caused by a bump, blow, or jolt to the head or by a hit to the body that causes the head and brain to move rapidly back and forth.
What is post concussion syndrome symptoms?
Persistent post-concussive symptoms, also called post-concussion syndrome, occurs when concussion symptoms last beyond the expected recovery period after the initial injury. The usual recovery period is weeks to months. These symptoms may include headaches, dizziness, and problems with concentration and memory.
How hard is concussed?
You have to be hit very hard to get a concussion: False. Any contact to your head or body that causes the head to move rapidly can cause a concussion. Sustaining several lower impact hits may even be more dangerous than one forceful hit. Anyone that sustains a hard impact should seek medical attention.
What causes concussion?
A concussion is a mild traumatic brain injury that results from a bump, violent jolt or blow to your head that disrupts normal brain function. A concussion can also be caused by a hit to your body that is strong enough to cause your head to forcefully jerk backwards, forwards or to the side.
How often is the quasi biennial oscillation ( QBO ) updated?
Daily plots are updated at least once per day, while monthly plots are updated on the 2nd of the following momth. The Quasi-biennial Oscillation (QBO) is a tropical, lower stratospheric, downward propagating zonal wind variation, with an average period of ~28 months.
How are the EOFs related to the QBO?
The EOFs represent the major components of the QBO variability, and have been calculated following [Wallace et al., 1993]. The EOFs were derived from the 1979-present deaseasonalized monthly mean Singapore radiosonde zonal winds (shown above) using 100-10 hPa zonal winds.
Where can I find a description of the QBO?
A comprehesive QBO summary (with a description of the cause of the QBO) can be found in Baldwin et al. [2001]. Data herein are from radiosondes, NASA GSFC/GMAO assimilated data, and NASA satellites. The radiosondes are from the Meteorological Service Singapore Upper Air Observatory (station code 48698).
When does the QBO time series get updated?
The QBO time series is updated until July 2021. Note: Depending on your browser configuration it might happen that the data files, due to the file suffix .dat, will be related to the quicktime application.