From 6ed05cf73481ab0bf23eeee7487382d0267726a1 Mon Sep 17 00:00:00 2001
From: Sandor Kertesz <Sandor.Kertesz@ecmwf.int>
Date: Wed, 17 Sep 2025 14:53:06 +0100
Subject: [PATCH 1/2] Support 0.05 degree latlon target gridspec for GRIB data
 in earthkit-regrid

---
 docs/release_notes/version_0.16_updates.rst |  9 +++++++++
 src/earthkit/data/conf/global_grids.json    | 16 ++++++++++++++++
 tests/core/test_gridspec.py                 |  1 +
 3 files changed, 26 insertions(+)

diff --git a/docs/release_notes/version_0.16_updates.rst b/docs/release_notes/version_0.16_updates.rst
index beb7ba40b..d8e8ce3c0 100644
--- a/docs/release_notes/version_0.16_updates.rst
+++ b/docs/release_notes/version_0.16_updates.rst
@@ -2,6 +2,15 @@ Version 0.16 Updates
 /////////////////////////
 
 
+Version 0.16.5
+===============
+
+Fixes
+++++++++
+
+- Enabled earthkit-regrid (earthkit-regrid >= 0.4.1 is required) to interpolate GRIB fieldlists on HEALPix nested grids to 0.05x0.05 degree global latitude-longitude grid
+
+
 Version 0.16.4
 ===============
 
diff --git a/src/earthkit/data/conf/global_grids.json b/src/earthkit/data/conf/global_grids.json
index 472182e8c..963612f77 100644
--- a/src/earthkit/data/conf/global_grids.json
+++ b/src/earthkit/data/conf/global_grids.json
@@ -1,4 +1,20 @@
 {
+    "0.05": {
+        "grid": [
+            0.05,
+            0.05
+        ],
+        "shape": [
+            3601,
+            7200
+        ],
+        "area": [
+            90,
+            0,
+            -90,
+            359.95
+        ]
+    },
     "0.1": {
         "grid": [
             0.1,
diff --git a/tests/core/test_gridspec.py b/tests/core/test_gridspec.py
index 8629142ee..37a8d93d4 100644
--- a/tests/core/test_gridspec.py
+++ b/tests/core/test_gridspec.py
@@ -24,6 +24,7 @@
 @pytest.mark.parametrize(
     "gridspec",
     [
+        {"grid": [0.05, 0.05]},
         {"grid": [2, 2]},
         {"area": [90, -180, -90, 180]},
         {"area": [90, -180, -90, 180], "grid": [2, 2]},

From 5be715d33a594c742ef6080dca640816c6f7bc90 Mon Sep 17 00:00:00 2001
From: Sandor Kertesz <Sandor.Kertesz@ecmwf.int>
Date: Wed, 17 Sep 2025 14:53:20 +0100
Subject: [PATCH 2/2] Support 0.05 degree latlon target gridspec for GRIB data
 in earthkit-regrid

---
 docs/release_notes/version_0.16_updates.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/release_notes/version_0.16_updates.rst b/docs/release_notes/version_0.16_updates.rst
index d8e8ce3c0..4e258d9a5 100644
--- a/docs/release_notes/version_0.16_updates.rst
+++ b/docs/release_notes/version_0.16_updates.rst
@@ -8,7 +8,7 @@ Version 0.16.5
 Fixes
 ++++++++
 
-- Enabled earthkit-regrid (earthkit-regrid >= 0.4.1 is required) to interpolate GRIB fieldlists on HEALPix nested grids to 0.05x0.05 degree global latitude-longitude grid
+- Enabled earthkit-regrid (earthkit-regrid >= 0.4.1 is required) to interpolate GRIB fieldlists to 0.05x0.05 degree global latitude-longitude grid
 
 
 Version 0.16.4