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Refer to figure or lamberts Conformal Chart of the northern hemisphere.
At position A what is the relationship between Earth Convergency (EC) and Chart Convergency (CC)?

  • A

    EC > CC

  • B

    EC < CC

  • C

    EC = CC

  • D

    The relationship cannot be determined.

Refer to figure.
Lambert’s Conformal Chart Convergence
On a Lambert conformal conic chart, the Earth convergence (Ec) at a particular position equals the chart convergence (cc). This equivalence arises because the chart convergence is specified for the parallel of origin, maintaining a constant value across the entire chart, and aligning with the Earth's convergence at that parallel.

  • On a Lambert conformal chart, Earth convergence (Ec) at the parallel of origin aligns with chart convergence (CC) ⇒ At parallel of origin: Ec = Cc
  • Above parallel of origin : Ec > Cc
  • Below parallel of origin : Ec < Cc

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