From 7adcd9475a767adaf9079d8d3c3f36c0ea38593b Mon Sep 17 00:00:00 2001
From: j-atkins <106238905+j-atkins@users.noreply.github.com>
Date: Tue, 17 Feb 2026 14:18:27 +0100
Subject: [PATCH 1/3] increase random noise bounds

---
 src/virtualship/utils.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/virtualship/utils.py b/src/virtualship/utils.py
index 549c998b..7ef77734 100644
--- a/src/virtualship/utils.py
+++ b/src/virtualship/utils.py
@@ -15,8 +15,8 @@
 import numpy as np
 import pyproj
 import xarray as xr
-from parcels import FieldSet
 
+from parcels import FieldSet
 from virtualship.errors import CopernicusCatalogueError
 
 if TYPE_CHECKING:
@@ -569,7 +569,7 @@ def _find_files_in_timerange(
     return [fname for _, fname in files_with_dates]
 
 
-def _random_noise(scale: float = 0.01, limit: float = 0.03) -> float:
+def _random_noise(scale: float = 0.05, limit: float = 0.1) -> float:
     """Generate a small random noise value for drifter seeding locations."""
     value = np.random.normal(loc=0.0, scale=scale)
     return np.clip(value, -limit, limit)  # ensure noise is within limits

From 48b8880a0ca3533391419d778a5972bd446acf81 Mon Sep 17 00:00:00 2001
From: j-atkins <106238905+j-atkins@users.noreply.github.com>
Date: Tue, 17 Feb 2026 14:46:53 +0100
Subject: [PATCH 2/3] move test drifters away from domain edge

---
 tests/instruments/test_drifter.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/instruments/test_drifter.py b/tests/instruments/test_drifter.py
index 51f78883..8fd29549 100644
--- a/tests/instruments/test_drifter.py
+++ b/tests/instruments/test_drifter.py
@@ -39,7 +39,7 @@ def test_simulate_drifters(tmpdir) -> None:
     drifters = [
         Drifter(
             spacetime=Spacetime(
-                location=Location(latitude=0.05, longitude=0.05),
+                location=Location(latitude=0.5, longitude=0.5),
                 time=base_time + datetime.timedelta(days=0),
             ),
             depth=0.0,

From 71da155bd2a4f760ed6e71d15ea00f39bf22b700 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Tue, 17 Feb 2026 13:47:44 +0000
Subject: [PATCH 3/3] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 src/virtualship/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/virtualship/utils.py b/src/virtualship/utils.py
index 7ef77734..cef83501 100644
--- a/src/virtualship/utils.py
+++ b/src/virtualship/utils.py
@@ -15,8 +15,8 @@
 import numpy as np
 import pyproj
 import xarray as xr
-
 from parcels import FieldSet
+
 from virtualship.errors import CopernicusCatalogueError
 
 if TYPE_CHECKING: