Exam 2 wx 201 - Study guides, Class notes & Summaries

WX 201 Exam 2 with correct Answers (Graded A) An unsaturated air parcel cools or warms at what rate? Dry adiabatic lapse rate (DALR) A saturated air parcel cools or warms at which rate? Moist adiabatic rate (MALR) If the environmental lapse rate is greater than the dry adiabatic rate, the atmosphere is: Absolutely unstable Surface cooling and warm air advection aloft generally do what to the atmosphere? Make it more stable An air parcel starts to rise freely when it firs...

WX 201 Exam 2 with correct Answers (Graded A) Analysis Chart Depict actual data obtained at a given observation time Forecast Chart Computer model charts predicting future conditions of the atmosphere; surface charts and upper level charts are created Constant altitude charts All locations at the same altitude above ground level (for surface analysis, pressures are typically adjusted to MSL) Constant pressure charts all locations on the chart have the same pressure; contour l...

WX 201 Exam 2 with correct Answers (Graded A) Reflectivity attenutation absorption of radiation by targets WSR-88D Weather Surveillance Radar 1988 Doppler, detects precip and atmospheric movement Doppler ability to detect the "shift in the phase" of an energy pulse aircraft radar less precise than WSR-88D ground radar elevated to avoid terrain, raises elevation angle 1 degree every 360 degree scan, probably wont give you full picture of scan, cone of silence wher...

WX 201 - Exam 2 Questions and Answers The subtropical jet stream is usually found between ________. 20 degrees to 30 degrees latitude, 200-mb level The summer monsoon in eastern and southern Asia is characterized by ________. wet weather and winds blowing from sea to land The wind around a surface high pressure center in the Northern Hemisphere, blows _______ and outward from the center. clockwise Both the polar front jet stream and the subtropical jet stream are found at whic...

WX 201 Chapter 2 Exam with correct Answers

WX 201 Exam 2 with correct Answers (Graded A) ____ is a condition in which the environmental lapse rate is equal to the dry adiabatic rate. Neutral stability The rate at which the actual air temperature changes with increasing height above the surface is referred to as the ____ rate. environmental lapse Absolute instability results when the environmental lapse rate is ____ the ____ adiabatic rate. greater than; dry An air parcel in an unstable atmosphere has ____ force acting ...

WX 201 Exam 2 with solutions 100% correct Describe the differences in how we measure snow intensity versus rain intensity? Snowfall intensity is measured by visibility and does not take liquid water content into account (which can be a problem for aviation). Rainfall intensity is measured by rainfall rate (i.e., rainfall amount/hour). For the following situations, discuss which precipitation process (collision-coalescence or Bergeron) would most likely be responsible for: Rain in Nort...

Exam 2, WX 201 Questions and Answers Graded A+ The heat index (HI) is used by the National Weather Service, and combines ____ with ____ to determine an apparent temperature. - dew point temperature; mixing ratio - air temperature; specific humidity - actual vapor pressure; specific humidity - air temperature; relative humidity - mixing ratio; saturation vapor pressure air temperature; relative humidity The initial stage of an ordinary thunderstorm is the - dissipating stage - m...