KAPPA
.ARC
Atmospheric Refraction Intelligence
V3 ONLINE
PCT/SA2026/050034
[ SET POINT A ]
[ SET POINT B ]
[ CLEAR ]
CLICK MAP TO SET POINT
01
Application Mode
◈
LOS LONG RANGE
◎
SURVEY / EDM
▱
LEVELLING
〜
MARINE
⬡
DRONE / UAV
✦
ASTRONOMY
◉
RADAR / MICRO
⊏
TUNNEL
02
Observer → Target
POINT A — OBSERVER
MAP →
LAT
LON
ELEV (m)
POINT B — TARGET
MAP →
LAT
LON
ELEV (m)
03
Date & Time (UTC)
DATE
TIME UTC
04
Data Source
ERA5 L137 ELITE
137 model levels · auto-selected for LOS long range
AUTO
▶ COMPUTE KAPPA
—
REFRACTION COEFFICIENT κ
—
—
κ REQUIRED
—
DEFICIT
—
DIST (km)
—
dN/dh (N/km)
—
C+R (m)
—
N AVG
▸ Refractivity Profile N(z)
▸ Thermal Layer Analysis
Nearest Radiosonde
ERA5-Single Supplementary
DATA SOURCE:
—
· KAPPA Arc V3