This document is a summary of the ATPL subject Meteorology. You can use it as an easy way to get started, a refresher for your theory or a quick way to check if you know the essential parts of the subjects short before your exam. I made the summary while i was studying for my ATPL theory, i passed...
Section 4 – Meteorological information
Observation ............................................................................ 20
Weather charts ........................................................................ 22
Information for flight planning… .............................................. 24
Meteorological services… ......................................................... 25
1
, Meteorology
The Atmosphere
Standard atmosphere:
-15℃
-1013,25 hPa or 29,92 in hg
-1.225 kg/m3
-ELR = 1,98 ℃ per 1000 ft
-DALR = 3 ℃ per 1000 ft
-DLR = 0,5 ℃ per 1000 ft
-Tropopause = 36090 ft / 11 km
-> Temperature = -56,5 ℃
Lapse Rate:
-MSL = 30 ft
-18000 ft/500 hPa = 50 ft
-39000 ft/200 hPa = 100 ft
Diurnal variation
-Max temperature = 2 hours after local noon
-Max insolation = at Local noon
-Min temperature = half an hour rafter sunrise
Pressure Convert factor
-18000 ft = 50% of pressure = 500 hPa -Celsius -> Kelvin = +273
-34000 ft = 25% of pressure = 250 hPa -Meter -> Feet = x 3,28
-troposphere = 90% of water vapour -1 NM -> 1,852 km
ISO lines Height per hPa lapse rate
-Isotach = wind speeds -H = 96 x T : P
-Isobar = pressure -T = kelvin, P = hPa, H = ft/hPa
-Isohyps = height
-Isotherm = temperature
2
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller larsgerritsen1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $5.96. You're not tied to anything after your purchase.
