2025 ISR World Days
This page lists the 2025 Incoherent Scatter Radar (ISR) World Days.
ISR World Days are days in which multiple ISRs simultaneously take
observations for science needs that are global in nature.
To create this schedule, proposals are first solicited yearly within
the space physics. These proposals are then discusses amongest the
public, ISR PIs, and the URSI Incoherent Scatter Working Group at a
'town hall'. Then, approved proposals are scheduled for the following
year. Please reach out if you have any questions!
| Month |
New Moon |
Full Moon |
Experiment |
Experiment Length |
| December 2024 |
1, 30 |
15 |
Dynamics |
10 Days |
| January |
29 |
13 |
Dynamics |
10 Days |
| February |
27 |
12 |
|
|
| 1 to 14 |
|
|
Dynamics |
10 Days |
| 19 to 28 |
|
|
ICME |
5 Days |
| March |
29 |
14 |
|
|
| 1 to 7 |
|
|
ICME |
5 Days |
| 8 to 17 |
|
|
Dynamo |
5 Days |
| 17 to 31 |
|
|
ICME |
5 Days |
| April |
27 |
12 |
Dynamo |
5 Days |
| May |
26 |
12 |
Dynamo |
5 Days |
| June |
25 |
11 |
|
|
| July |
24 |
10 |
|
|
| August |
23 |
9 |
|
|
| September |
21 |
7 |
CONGS-25 |
5 Days |
| October |
21 |
6 |
CONGS-25 |
5 Days |
| November |
20 |
5 |
|
|
| December |
19 |
4 |
|
|
Dynamics: Dynamics, electrodynamics, temperature and electron density
in the lower and upper thermosphere and ionosphere during strong polar
vortex conditions
Requester: Goncharenko
Primary Parameters to Measure, including requested time
resolution:
Electron density, electron and ion temperatures from lowest possible
altitude throughout the F-region. Temporal resolution can be sacrificed
and data integration period increased in order to obtain data at lower
altitudes.
Secondary Parameters to Measure: Zonal and meridional
components of neutral wind in the lower thermosphere (95-140km), ExB
drift, F-region meridional wind.
Requested radars: PFISR, RISR-N, RISR-C, EISCAT
(mainland and Svalbard), Millstone Hill, Jicamarca, Kharkiv, QJISR, and
PANSY.
NOTE 1: A 10-day campaign on alert basis is requested, with alert window
Dec 15 – Feb 15. The decision to start will be based on predictions of
stratospheric conditions. In the case of no anomalous stratospheric
conditions (strong polar vortex or sudden stratospheric warming event),
the World Day will revert to a 5‐day run at the end of the alert period,
9‐14 February. There should be one week's notice for the alert
ICME: Geomagnetic storm triggered by ICME
Requester: Aikio
Primary Parameters to Measure, including requested time
resolution:
Plasma parameters: Ne, Te, Ti, Vi, (the basic time resolution of the
measurement) 1 min or shorter.
Secondary Parameters to Measure: Ion velocity vectors
and electric fields (analyzed from ion velocity measurements along
several directions in the F-region), time resolution 1-5 min.
Requested radars: PFISR, RISR-N, RISR-C, EISCAT
(mainland and Svalbard), Millstone Hill
NOTE 2: On alert after CME, alert periods avoiding full moon: 19
February -7 March 2025, 17 March – 31 March 2025, 5-day continuous
(24-h) measurement
Dynamo: Solar wind-magnetosphere-ionosphere and thermosphere
disturbance wind dynamo effects over the storm-time upper atmosphere
dynamics and electrodynamics
Requester: Navarro
Primary Parameters to Measure, including requested time
resolution:
Plasma drifts throughout the F-region up to highest altitude possible.
Temporal resolution of 5 mins depending on SNR. We might request
reprocessing of data for 1-min resolution for specific time periods
(mostly during daytime).
Secondary Parameters to Measure: Zonal and meridional
thermospheric neutral winds from SDI and FPI support instrumentation at
ISR locations or nearby. If possible, coherent backscatter observations
from AMISR-14 system at Jicamarca for support of tracking irregularities
at equatorial latitudes.
Requested radars: PFISR, RISR-N, RISR-C, EISCAT
(mainland and Svalbard), Millstone Hill, Jicamarca, SYISR, QJISR,
Kharkiv, Irkutsk, and PAANSY
A 5-days campaign on alert basis is requested, with alert window Mar 1 –
May 30.
CONGS-25: 2025 Coordinated Observation of Geospace Storm (CONGS-25)
Requester: Zhang
Primary Parameters to Measure, including requested time
resolution:
Basic ISR parameters (Ne, Te, Ti, and Vo) with typical 2-3 min
integration time. If possible, high temporal resolution plasma-line
electron density data.
Secondary Parameters to Measure: Resolved ion velocity
vector locally or regionally; thermospheric winds and temperature
Requested radars: PFISR, RISR-N, RISR-C, EISCAT
(mainland and Svalbard), Millstone Hill, Jicamarca, Sanya, Kharkiv,
QJISR, Irkutsk, and PANSY
A 5-day campaign on alert basis. The exact dates will be determined
based on the geomagnetic activity forecasts. The PIs will communicate
with the facilities, issue observation alerts and announce the kickoff
time approximately 3 days ahead of the campaign start.