diff --git a/CHANGELOG.md b/CHANGELOG.md
index 47b37198a..8df36b8df 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -43,6 +43,7 @@ Attention: The newest changes should be on top -->
 
 ### Fixed
 
+- BUG: forecast and reanalysis models - Update ECMWF dictionary values [#736](https://github.com/RocketPy-Team/RocketPy/pull/736)
 - BUG: forecast and reanalysis models - move wind_speed to correct position [#735](https://github.com/RocketPy-Team/RocketPy/pull/735)
 - BUG: Sideslip Angle and Damping Coefficient Calculation [#729](https://github.com/RocketPy-Team/RocketPy/pull/729)
 
diff --git a/data/weather/ndrt_2020_weather_data_ERA5_new.nc b/data/weather/ndrt_2020_weather_data_ERA5_new.nc
new file mode 100644
index 000000000..7fea7c5e2
Binary files /dev/null and b/data/weather/ndrt_2020_weather_data_ERA5_new.nc differ
diff --git a/rocketpy/environment/environment.py b/rocketpy/environment/environment.py
index c7a85c002..394275763 100644
--- a/rocketpy/environment/environment.py
+++ b/rocketpy/environment/environment.py
@@ -1746,6 +1746,8 @@ def process_forecast_reanalysis(
         # Read weather file
         if isinstance(file, str):
             data = netCDF4.Dataset(file)
+            if dictionary["time"] not in data.variables.keys():
+                dictionary = self.__weather_model_map.get("ECMWF_v0")
         else:
             data = file
 
@@ -1910,7 +1912,12 @@ def process_forecast_reanalysis(
         # Compute info data
         self.atmospheric_model_init_date = get_initial_date_from_time_array(time_array)
         self.atmospheric_model_end_date = get_final_date_from_time_array(time_array)
-        self.atmospheric_model_interval = get_interval_date_from_time_array(time_array)
+        if self.atmospheric_model_init_date != self.atmospheric_model_end_date:
+            self.atmospheric_model_interval = get_interval_date_from_time_array(
+                time_array
+            )
+        else:
+            self.atmospheric_model_interval = 0
         self.atmospheric_model_init_lat = lat_list[0]
         self.atmospheric_model_end_lat = lat_list[-1]
         self.atmospheric_model_init_lon = lon_list[0]
diff --git a/rocketpy/environment/weather_model_mapping.py b/rocketpy/environment/weather_model_mapping.py
index 7aed6d5e1..59c6e2fd9 100644
--- a/rocketpy/environment/weather_model_mapping.py
+++ b/rocketpy/environment/weather_model_mapping.py
@@ -27,7 +27,7 @@ class WeatherModelMapping:
         "u_wind": "ugrdprs",
         "v_wind": "vgrdprs",
     }
-    ECMWF = {
+    ECMWF_v0 = {
         "time": "time",
         "latitude": "latitude",
         "longitude": "longitude",
@@ -39,6 +39,18 @@ class WeatherModelMapping:
         "u_wind": "u",
         "v_wind": "v",
     }
+    ECMWF = {
+        "time": "valid_time",
+        "latitude": "latitude",
+        "longitude": "longitude",
+        "level": "pressure_level",
+        "temperature": "t",
+        "surface_geopotential_height": None,
+        "geopotential_height": None,
+        "geopotential": "z",
+        "u_wind": "u",
+        "v_wind": "v",
+    }
     NOAA = {
         "time": "time",
         "latitude": "lat",
@@ -108,6 +120,7 @@ def __init__(self):
         self.all_dictionaries = {
             "GFS": self.GFS,
             "NAM": self.NAM,
+            "ECMWF_v0": self.ECMWF_v0,
             "ECMWF": self.ECMWF,
             "NOAA": self.NOAA,
             "RAP": self.RAP,
diff --git a/tests/acceptance/test_ndrt_2020_rocket.py b/tests/acceptance/test_ndrt_2020_rocket.py
index f189bdac2..7874ee164 100644
--- a/tests/acceptance/test_ndrt_2020_rocket.py
+++ b/tests/acceptance/test_ndrt_2020_rocket.py
@@ -1,11 +1,19 @@
 import numpy as np
 import pandas as pd
+import pytest
 from scipy.signal import savgol_filter
 
 from rocketpy import Environment, Flight, Rocket, SolidMotor
 
 
-def test_ndrt_2020_rocket_data_asserts_acceptance():
+@pytest.mark.parametrize(
+    "env_file",
+    [
+        "data/weather/ndrt_2020_weather_data_ERA5.nc",
+        "data/weather/ndrt_2020_weather_data_ERA5_new.nc",
+    ],
+)
+def test_ndrt_2020_rocket_data_asserts_acceptance(env_file):
     # Notre Dame Rocket Team 2020 Flight
     # Launched at 19045-18879 Avery Rd, Three Oaks, MI 49128
     # Permission to use flight data given by Brooke Mumma, 2020
@@ -73,7 +81,7 @@ def test_ndrt_2020_rocket_data_asserts_acceptance():
     )
     env.set_atmospheric_model(
         type="Reanalysis",
-        file="data/weather/ndrt_2020_weather_data_ERA5.nc",
+        file=env_file,
         dictionary="ECMWF",
     )
     env.max_expected_height = 2000