SAMRA HELP

starrival · Post by **starrival** » Sun Aug 06, 2006 9:45 am

I recently wrote the SAMRA exam and got like 60%. I hear some of the questions are repeated. According to the TC I got the following wrong. If anyone can remember any of the question from the topics below, please PM me or post it on here. I am sure it will help out many of us. Only serious replies please. Thank You

-Describe jet stream turbulence and its location
-Describe the characteristic of of HF radio(2 questions)
-Describe the effect of low-level windshear
-Recall the direction of mature wave in the northern Hemisphere
-Recall the divisions of the atmosphere and their characterisitic
-Recall where large supercooled water droplets can develop
-Recognize the importance of airspeed changes while enroute
-Recall all types of fronts and their movement
-Recall the divisions of the atmosphere and their characteristic
-identify weather radar scanning techniques
-Explain the relationship that ELR and SALR have on stability
-Describe the change in wind from the surface to clear of the boundary layer

gr8_2_av8 · Post by **gr8_2_av8** » Sun Aug 06, 2006 10:46 am

What did you use to study? I just wrote both, went through the current Aero C question book and knew the answer to nearly every question. Aced the exams.

starrival · Post by **starrival** » Sun Aug 06, 2006 11:51 am

gr8_2_av8..thanks for your reply. I did a self study using and and subscribed to their online accelerated course plus the aerocurse + the study guide. I did not find Heinz any help but surely found the aerocurse a big help hence the 60%. I passed the saron no problem.

Raven20000 · Post by **Raven20000** » Mon Aug 07, 2006 7:58 pm

For the Samra if you want a good mark by selfstuding use the Weather Command Manual

starrival · Post by **starrival** » Tue Aug 08, 2006 12:55 am

Raven20000..thnks buddy..i actually bought a new copy(2004 version) of the AWM with the CD's. I was hoping the CD's which came along with the book would show the visiual effects/presentation of the weather process since it makes it lot easier to understand. However, I have been learning alot without it. Once again thank you. If you remember any question, please PM me.

Raven20000 · Post by **Raven20000** » Tue Aug 08, 2006 9:10 pm

Check your pm's starrival

bandit1 · Post by **bandit1** » Tue Oct 17, 2006 12:49 pm

"RECALL THE DIRECTION OF THE MATURE WAVE IN THE NORTHERN HEMISPHERE"

What's the answer to that question?

Also what's the deal with AIRSPEED CHANGES ENROUTE? is that about slowing down as you burn off fuel to keep the same TAS?

Thanks guys

bandit1 · Post by **bandit1** » Tue Oct 17, 2006 12:58 pm

where can I find the info on HF radios?

ei ei owe · Post by **ei ei owe** » Tue Oct 17, 2006 1:11 pm

Wasn't there a recent thread about what edition was in use for ? I've got the 3rd. Is it worth tracking down the 4th or is it close enough?

rippey · Post by **rippey** » Tue Oct 17, 2006 1:51 pm

There might be a section in from the ground up on HF radios...it is pretty basic, but for the exams all I remember having to know was things like ground waves vs sky waves, skip zone, skip distance, and the general rule: sun up - frequency up, sun down - frequency down.

bandit1 · Post by **bandit1** » Tue Oct 17, 2006 2:30 pm

thanks, so whats the deal with DIRECTION OF THE MATURE WAVE IN THE NORTHERN HEMISPHERE

co-joe · Post by **co-joe** » Tue Oct 17, 2006 2:59 pm

-Describe jet stream turbulence and its location

I remember the drawing, it showed the worst CAT below and on the warm air side I believe, but Air Command it for sure.

-Describe the characteristic of of HF radio(2 questions)

Along the lines of what rippey said. HF is not limited to line of sight like VHF is, but there are serious limitations pertaining to the area between where the sky waves come back down of the ionosphere and the ground waves... Probably ACW as well, or FTGU or something.

-Describe the effect of low-level windshear

ACW for sure, increase perf shear, and decrease perf...

-Recall the direction of mature wave in the northern Hemisphere

WTF?

-Recall the divisions of the atmosphere and their characterisitic

TSMT Trop, Strat, Meso, and Thermosphere, and the area between them are the "pauses. Remember the environmental lapse rate of 1.98 deg per thousand feet goes up to the top of the stratoshere where the average temp is -56.5 degrees... etc ACW

-Recall where large supercooled water droplets can develop

In the tops of convective clouds TCU's and Cb's ACW

-Recognize the importance of airspeed changes while enroute

Got me man?

-Recall all types of fronts and their movement

ACW definitely

-identify weather radar scanning techniques

That ones probably in ACW , but here's my take. Set the range to something reasonably close like 50-100 nm, lower the tilt until you just start to paint ground, tilt up until you no longer paint ground, ajd the gain to get rid of clutter, if you find cells, tilt up and down to find their tops and bottoms, and watch out for "hooks and fingers". There's whole books on this but ACW should have something.

-Explain the relationship that ELR and SALR have on stability

Remember ELR is the lapse rate of the environment, DALR is always assumed to be 3 deg/ 1000', and SALR is always assumed to be 1.5 deg/ 1000'. ACW

-Describe the change in wind from the surface to clear of the boundary layer

I think this refers to the change in wind direction from the earth's surface up to where it runs parallel to the isobars. If so generally wind ... oh shit... I think it Veers and increases, but my ACW is in my parent's basement somewhere from the first time I left home.

So the bad news is that you failed Met. The good news it that you only need to work on one area to pass. Go through ACW cover to cover, that will take a while. I'd also see about sitting in on a Met groundschool somewhere.

Warning: The opinions expressed above are only that: opinion, they may be correct, or they may complete horse shit! CJ

FlyingFinn · Post by **FlyingFinn** » Tue Oct 17, 2006 4:33 pm

Explain the relationship that ELR and SALR have on stability

Remember ELR is the lapse rate of the environment, DALR is always assumed to be 1.5 deg/ 1000', and SALR is always assumed to be 3 deg/ 1000'. So if ELR is greater than SALR you have very unstable air, if it's lower than DALR (1.5) you have extremely stable air. ACW

The DALR is 3.0C/1000 and the SALR is 1.5/1000. just so we don't get confused here! Refer to Chapter 4 of ACW Stable and Unstable Air!

co-joe · Post by **co-joe** » Tue Oct 17, 2006 5:05 pm

Oh crap! I managed to confuse myself on that one eh? Thanks for the correction.

tipspeed · Post by **tipspeed** » Tue Oct 17, 2006 5:28 pm

ELR/DALR/SALR don't apply in the strat. do they? Thought the tropopause was the limit. Air stability and radiation?

Wind direction and speed will veer and increase with alt. Just think, surface friction will cause it to slow and back.

"TSMT Trop, Strat, Meso, and Thermosphere, and the area between them are the "pauses. Remember the environmental lapse rate of 1.98 deg per thousand feet goes up to the top of the stratoshere where the average temp is -56.5 degrees... etc ACW"

rippey · Post by **rippey** » Tue Oct 17, 2006 5:52 pm

I think the question about airspeed in cruise has to do with speed for maximum range gets slower as you get lighter. So if you are doing a long distance flight where you need to stretch maximum range you will start the flight at a higher cruise airspeed than you will finish it at. I heard a story during recurrent about an Astra crew going from somewhere in the US to the Azores. At their first crosscheck point they had a little more fuel than the flight plan showed they would have so rather than keep slowing down as is called for for long range cruise they kept their speed up...they made it to the other side on fumes.

The boundary layer with regard to wind speed I guess has to do with the fact that upper level winds flow parallel to the isobars due to coriolis, but on the surface friction with the ground, buildings, trees etc. screws that up, so it surface winds blows a little more at an angle to the isobars

aileron · Post by **aileron** » Fri Oct 20, 2006 9:35 pm

The Mature Wave in the n. hemisphere is parallel to the warm sector's isobars... see CFACM 7-5 through 7-12.

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