Hi guys,
Here in South America we commonly use climb gradient in %, this will reflet directly in the VSI.... well, keeping it straight:
It is as normal to use a 3,3 % climb gradient as standard , it happens to find different ones as they may and alway vary according to terrain conditions alongside. That's what determines the required climb gradient for each airport.
La paz (Bolivia SLLP), Lima (SPIM), Bogotá DC (SKBO) and some others require a much higher climb gradient up to 5% or more !!
This will of course filter the number of allowable aircrafts to land those airport :-)and to tkoff due to high terrain and atmos. conditions. The airplanes will need more rwy for tkoff.
If I´m not wrong, following ICAO's climb minima, the second segment asks for 2,4% and 1,2% for the third for twin eng.
In the other hand, if impossible to comply, advise ATC, wait for another day, much colder,high pressure and more head wind, pick up your bag and sunglasses,seal the doors and go to the bar:-)
Well, to be straight :-)
Hope this help.