IDF · NIGERIA
Intensity–Duration–Frequency Dashboard
Three Source Datasets
FMWH per-RP (d in minutes) · Source A
i = α / (d
min
+ θ)
η
Oyebande per-RP (d in hours) · Source B
i = α / (d
hr
+ θ)
n
TRMM shared θ,η (d in hours) · Source C
i = α
T
/ (d
hr
+ θ)
η
🌙 Dark Mode
Source A — FMWH (35 stations)
Source B — Oyebande (11 zones)
Source C — TRMM (72 stations)
Source A · FMWH formula · per-RP α,θ,η · d in minutes · includes 1-yr RP
Station Network Map
◆ Source A · ● Source C (TRMM) · Click marker to load
IDF Curves
Select a station to begin
↓ Export CSV
Station / Zone
X-Axis Scale
Linear
Log
Y-Axis Scale
Linear
Log
Duration
Duration Unit
Minutes
Hours
Return Period
2-Year
5-Year
10-Year
25-Year
50-Year
100-Year
Intensity
—
mm/hr
Station Parameters
Source A
Longitude
—
Latitude
—
θ (theta)
—
η (eta)
—
α Parameters (per-RP, shared θ,η)
α 2yr
—
α 5yr
—
α 10yr
—
α 25yr
—
α 50yr
—
α 100yr
—
Per-RP Parameters (d in minutes)
T
α
θ
η
Zone —
Intensity Table
(mm/hr)
Cross-Dataset Comparison
Source
Source A — FMWH
Source B — Oyebande
Source C — TRMM
Station
Return Periods
+ Add
✕ Clear
Bias Reference
— select reference —
IDF Curves
Relative Bias %
Summary Statistics
Computed across all 13 durations (5 min – 24 hr). Set a Bias Reference curve to enable NSE and PBIAS.